CN109525282A

CN109525282A - Realize the device and method of data transmission

Info

Publication number: CN109525282A
Application number: CN201710843391.7A
Authority: CN
Inventors: 张永; 胡晓磊
Original assignee: FENGZHI (SHANGHAI) NEW ENERGY TECHNOLOGY Co Ltd
Current assignee: FENGZHI (SHANGHAI) NEW ENERGY TECHNOLOGY Co Ltd
Priority date: 2017-09-18
Filing date: 2017-09-18
Publication date: 2019-03-26
Anticipated expiration: 2037-09-18
Also published as: CN109525282B

Abstract

Present invention relates generally to the device and methods for realizing data transmission, and including the first equipment with first processor and the second equipment with second processor, the second equipment and the first equipment room are connected with the power line for conveying power supply.Wherein be disposed on power line the distance relative to the second equipment closer to the first equipment inductor, and first switch is provided between a DC voltage source and some terminal of the inductor, then the mode that first processor is sent in carrier signal to power line is mainly: by driving first switch, high frequency switches between turning on and off, and whereby on the power line, injection carries the sequence of high frequency pulses for being considered as carrier signal of data information.

Description

Realize the device and method of data transmission

Technical field

Present invention relates generally to field of photovoltaic power generation, are being related to containing photovoltaic cell and all kinds of electric power A kind of carrier communication mechanism is proposed in the electricity generation system of equipment, realizes the transmitting of information between different devices, to greatest extent Avoid communication carrier from influencing normal power generation, realize power line carrier communication under the premise of ensureing reliable power generation.

Background technique

In new energy field, this new energy of photovoltaic power generation has that cleaning, safe and reliable, running cost is low, daily maintenance The simply and on the spot advantages such as power generation make photovoltaic generating system become the countries in the world especially energy and lack regional common concern and again The novel industry of point development, plays indispensable role in the electrical problem for solving energy shortage.The core of photovoltaic power generation Heart equipment includes at least: solar battery or photovoltaic module, battery, header box and inverter and monitoring system etc..This etc. is set It needs to keep close communication function between standby, realize mutual data transmitting or assigns instruction or long-range control etc., power line Carrier communication is in such a way that power line carries out the specific communication of voice or data transmission as information transmitting medium, is to pass through load Analog or digital signal is carried out the technology of high-speed transfer by wave mode, can be carried out data transmitting, maximum feature as long as live wire It is not need to set up communication network again.The basic principle of power line carrier is that the high-frequency signal of carrying information is applied to electric power Carry out data transmission on line, then carrier wave is isolated by power line modulation /demodulation at terminal device.

Carrier wave is using transmission line of electricity as the communication of power system of the transmission medium of carrier signal.Since transmission line of electricity has ten Divide firm support construction, setting up two or more conducting wires generally has three-phase good conductor and one or two aerial earth wire, so While power transmission line conveys power current, with transmission carrier signal, it is not only economical but also very reliably.This comprehensive utilization early has become The peculiar means of communication preferentially used for all power departments in the world.Power line carrier communication and generally aerial line carrier communication Difference be: it is for example every can only to open limited channel from 8KHZ~500KHZ for available spectral range in same power grid A half-duplex channel need to occupy standard bands 4KHZ, then the frequency band cannot be reused, and otherwise will likely can generate serious cross-talk Interference.Usually general power line carrier equipment is all made of single channel single-side belt system, limits the every scheduled band of channel dual seizure It is wide.More circuits is opened if necessary, then must take the quarantine measures for installing power grid high-frequency segmentation filter additional.Power line carrier is logical The basic structure in road belongs to known technology, and carrier current is transmitted on power transmission line by the receipts transmitting end of carrier terminal equipment, trap to It prevents carrier current from flowing to substation busbars side, reduces and shunt loss.Carrier current and the coupled modes of power transmission line are divided into phase phase Coupling and two class of phase-ground coupling, phase-phase coupling sending allowance is smaller, but it is larger to couple setting investment.Phase-ground coupling sending allowance compared with Greatly, but coupling setting investment is smaller.It can also be by carrier current coupling on the power transmission line using the overhead ground wire of insulation against ground It closes on aerial earth wire, referred to as ground wire carrier.If the phase conductor of high voltage transmission line is split conductor, it is coupled in two strips and leads The carrier wave opened between line referred to as mutually divides carrier wave, at this time must be insulated from each other between split conductor.Transmission power limitation by The space Shi Huixiang radiated electromagnetic wave is transmitted on power line in carrier current, interferes broadcast and flight and navigation etc. in the frequency range Navigation service, so being limited to Transmission power.Frequency band multiplexing: modern most of power line carriers are all made of standard 4KHZ Frequency spectrum, wherein effective transmission band is 300-3400Hz.Frequency multiplexing technique is used using effective band in order to save, such as 300-2000Hz frequency range can be transmitted to audio section transmission remote action data or high-frequency protecting signal on speech and 2400-3400Hz. Also some carrier terminal equipments are furnished with dedicated control interface, instantaneously switch transmission high-frequency protecting signal using same carrier channel, are referred to as For multiplex carrier system.The application is the carrier wave that uses based on electricity generation system, send and receive with traditional carrier wave have it is biggish It improves and also adapts to photovoltaic generating system and avoid generated energy loss.

Summary of the invention

First in an optional but nonessential embodiment, a kind of device for realizing data transmission, feature are disclosed It is that and specifically includes that the first equipment with first processor；The second equipment with second processor；Second equipment and the The power line for conveying power supply is connected between one equipment；Be disposed on power line distance relative to the second equipment closer to First inductor of the first equipment；First is provided between the first DC voltage source and a terminal of first inductor Switch；First processor sends the mode in carrier signal to power line are as follows: driving first switch is high between turning on and off The sequence of high frequency pulses for being considered as carrier signal for carrying data information is injected in frequency switching whereby on the power line.

The device of above-mentioned realization data transmission, in which: first inductor is the EMI filtering being arranged on power line The inductor element of device.

The device of above-mentioned realization data transmission, in which: first inductor, which has, is coupled to the first of the first equipment Terminal and the Second terminal for being coupled to the second equipment；First DC voltage source is connected to first inductance by the first switch The Second terminal of device, to ensure on first inductor to the path of the first equipment for the induction reactance of carrier signal higher than described The induction reactance of carrier signal is directed on first inductor to the path of the second equipment.

The device of above-mentioned realization data transmission, in which: second processor receives the mode of carrier signal from power line Are as follows: its induction type air core coil sensor configured from power line for incuding carrier signal, then by second processing Device receives the carrier signal of capture.

The device of above-mentioned realization data transmission, in which: power supply is conveyed on power line from the second equipment, induction type is hollow The mode of coil pickoff induction carrier signal are as follows: be respectively coupled to a pair of output terminals for output power of the second equipment The induction coil that is had also cross induction type air core coil sensor of a pair of of power line；And to limit a pair of power line each The sense of current flowed through from the Part portions for passing through induction coil is identical.

The device of above-mentioned realization data transmission, in which: the first equipment includes header box or inverter, and the second equipment includes It is photovoltaic module configuration for executing the dc voltage changer of maximum power point tracking.

The device of above-mentioned realization data transmission, in which: multistage photovoltaic component string connection, which links together, constitutes a battery String group；Every level-one photovoltaic module is each equipped with the dc voltage changer for executing maximum power point tracking；And every level-one direct current Electric pressure converter is each equipped with for providing the output capacitance of itself output voltage；And multistage dc voltage changer is mutual Their own output capacitance is connected in series when series connection, so that total voltage that multistage dc voltage changer provides is as needs The power supply conveyed using power line.

Secondly in an optional but nonessential embodiment, a kind of device for realizing data transmission, feature are disclosed It is to specifically include that the first equipment with first processor；The second equipment with second processor；Second equipment passes through it The power line connected between the first equipment conveys power supply to the first equipment；Be disposed on power line relative to first equipment away from From the second inductor closer to the second equipment；It is set between the second DC voltage source and a terminal of second inductor It is equipped with second switch；Second processor sends the mode in carrier signal to power line: driving second switch is turning on and off Between high frequency switching whereby on the power line, injection carries the sequence of high frequency pulses for being considered as carrier signal of data information.

The device of above-mentioned realization data transmission, in which: multistage the second equipment for providing power supply is connected in series in Together；Second equipment of every level-one is used to execute maximum power point tracking to the photovoltaic module matched with it；The of every level-one Two equipment include providing the first and second output ends of output power；The second multistage equipment any previous stage when being serially connected The second equipment second output terminal be coupled to neighboring later stage the second equipment the first output end.

The device of above-mentioned realization data transmission, in which: described the second of the second equipment outfit for the level-one being arbitrarily designated Inductor be coupled in it the first output end and previous stage the second equipment second output terminal between；Or one be arbitrarily designated Second inductor that second equipment of grade is equipped with is coupled in the first of its second output terminal and the second equipment of rear stage Between output end；The first terminal and have that there is second inductor the second equipment for being coupled to the specified level-one to be equipped with It is coupled to the Second terminal of the second equipment of previous stage or rear stage；Second DC voltage source is connected to institute by the second switch State the Second terminal of the second inductor.

The device of above-mentioned realization data transmission, in which: the induction type air core coil sensor sense that second processor is equipped with Answer the mode of carrier signal are as follows: be respectively coupled to a pair of of power line of a pair of of voltage input end of the second equipment also cross induction The induction coil that formula air core coil sensor has；And limit the Part portions that a pair of power line respectively passes through induction coil In the sense of current that flows through it is identical.

And in an optional but nonessential embodiment, a kind of method for realizing data transmission, feature are disclosed It is to include mainly following scheme: is connected with the power line for conveying power supply, power line between the first equipment and the second equipment On be disposed with the distance relative to the second equipment closer to the first inductor of the first equipment, be respectively provided at first, second The first processor driving that the method for realizing data transmission between the first, second equipment of device includes: the first equipment is managed to be coupled in First switch between first DC voltage source and a terminal of first inductor high frequency between turning on and off is cut It changes, applies whereby at the terminal of first inductor and caused by the first DC voltage source by intermittence access and release First kind sequence of high frequency pulses, thus, that injects on power line carries a series of first kind high frequency arteries and veins of data information Sequence is rushed as carrier signal.

Above-mentioned method, in which: second processor captures the mode of the carrier signal of the first equipment sending from power line Are as follows: its induction type air core coil sensor configured is connect for incuding carrier signal from power line by second processor Receive the carrier signal sensed；The mode for the induction type air core coil sensor sensing carrier signal that second processor is equipped with also is wrapped It includes: being respectively coupled to a pair of of power line of a pair of output terminals for output power of the second equipment also cross induction type sky The induction coil that wire-core coil sensor has；And it limits a pair of power line and respectively passes through and flowed in the Part portions of induction coil The sense of current crossed is identical.

Above-mentioned method, in which: there also is provided distance relative to the first equipment on power line closer to the second equipment Second inductor；The method of data transmission is realized between the first, second equipment further include: the second processor of the second equipment is driven The dynamic second switch being coupled between the second DC voltage source and a terminal of second inductor is turning on and off it Between high frequency switch, whereby at the terminal of second inductor apply by the second DC voltage source by intermittence access and release The the second class sequence of high frequency pulses put and caused, that injects on power line carries a series of second class high frequencies of data information Pulse train is used as carrier signal.

Above-mentioned method, in which: first processor captures the mode of the carrier signal of the second equipment sending from power line Are as follows: its induction type air core coil sensor configured is connect for incuding carrier signal from power line by first processor Receive the carrier signal sensed；The mode for the induction type air core coil sensor sensing carrier signal that first processor is equipped with also is wrapped It includes: being respectively coupled to a pair of of power line of a pair of input terminals for receiving power supply of the first equipment also cross induction type sky The induction coil that wire-core coil sensor has；And it limits a pair of power line and respectively passes through and flowed in the Part portions of induction coil The sense of current crossed is identical.

Furthermore in an optional but nonessential embodiment, disclose a kind of in high frequency switch power and DC voltage turn The method communicated between parallel operation, it is characterised in that mainly: being connected between dc voltage changer and high frequency switch power useful In the power line of conveying power supply；Power supply of the dc voltage changer to high frequency switch power conveying direct current；High frequency switch power will The power inverter of direct current is at alternating current；Power line is equipped with the EMI Filtering for the noise for inhibiting high frequency switch power to generate Device, EMI FILTER are disposed with the distance relative to dc voltage changer closer to high frequency switch power on power line The first inductor；The method includes: that the processor driving of high frequency switch power configuration is coupled in first direct current First switch high frequency switching between turning on and off between potential source and a terminal of the first inductor；Whereby in the first electricity Apply the sequence of high frequency pulses caused by the first DC voltage source by intermittent access or release at the terminal of sensor, in electricity A series of sequence of high frequency pulses for carrying data information injected in the line of force are used as carrier signal.

Above-mentioned method, in which: multistage dc voltage changer is serially connected, and every level-one dc voltage changer is used to Maximum power point tracking is executed to the photovoltaic module matched with it；Every level-one dc voltage changer is each equipped with for mentioning For the output capacitance of itself output voltage；Multistage dc voltage changer their own output capacitance series connection company when being serially connected It connects, total voltage that multistage dc voltage changer provides is as the DC power supply conveyed to high frequency switch power.

Above-mentioned method, in which: the processor of dc voltage changer receives high frequency switch power sending from power line Carrier signal mode are as follows: air core coil sensor that it is configured is matched for incuding carrier signal from power line The filter set is used to filter clutter other than carrier signal, then by dc voltage changer configuration processor acquisition to True carrier signal.

Above-mentioned method, in which: and the air core coil sensor sensing carrier signal of dc voltage changer outfit Mode further include: be respectively coupled to a pair of of power line of a pair of of voltage output end of dc voltage changer also cross tubular wire The air core coil that coil sensor has；And it limits a pair of power line and respectively passes through and flow through in the Part portions of air core coil Sense of current is identical.

Above-mentioned method, in which: the first inductor of setting, which has, is respectively coupled to high frequency switch power, DC voltage conversion First, second terminal of device；First DC voltage source is connected to the Second terminal of the first inductor by the first switch；It is described When first switch is switched by high frequency, ensure high for the induction reactance of carrier signal on the first inductor to the path of high frequency switch power In the induction reactance for being directed to carrier signal on the path of the first inductor to dc voltage changer.

Above-mentioned method, in which: there also is provided distance relative to high frequency switch power on power line closer to direct current Second inductor of pressure converter；Second is provided between a terminal of the second DC voltage source and the second inductor to open It closes；The mode that the processor of dc voltage changer configuration is sent in carrier signal to power line is main are as follows: it drives second to open Close between turning on and off high frequency switching whereby on the power line injection carry data information be considered as carrier signal Sequence of high frequency pulses.

Above-mentioned method, in which: the processor of high frequency switch power receives dc voltage changer sending from power line Carrier signal mode are as follows: air core coil sensor that it is configured is matched for incuding carrier signal from power line The filter set is used to filter the clutter other than carrier signal, then is captured by the processor of high frequency switch power configuration to true Real carrier signal.

Above-mentioned method, in which: the mode of the air core coil sensor sensing carrier signal of high frequency switch power configuration is also Specifically include that a pair of of the power line for being respectively coupled to a pair of of voltage input-terminal of high frequency switch power also cross air core coil The air core coil that sensor has；And it limits and flows through a pair of power line and respectively pass through electricity in the Part portions of air core coil The direction of stream is identical.

Above-mentioned method, in which: the second inductor of setting, which has, is respectively coupled to dc voltage changer, HF switch electricity First, second terminal in source；Second DC voltage source is connected to the Second terminal of the second inductor by the second switch；It is described When second switch is switched by high frequency, ensure that the induction reactance on the second inductor to the path of high frequency switch power for carrier signal is low In the induction reactance for being directed to carrier signal on the path of the second inductor to dc voltage changer.

Then it in an optional but nonessential embodiment, discloses one kind and is integrated with high frequency switch power and direct current The system of pressure converter, it is characterised in that: dc voltage changer conveys the electricity of direct current by power line to high frequency switch power Source, high frequency switch power is by the power inverter of direct current at alternating current；Power line, which is equipped with, inhibits making an uproar for high frequency switch power generation There is the distance relative to dc voltage changer more to lean on power line for the EMI FILTER of sound, EMI FILTER First inductor of nearly high frequency switch power；High frequency switch power injected on power line carry data information be used as carrier wave A series of mode of sequence of high frequency pulses of signal are as follows: the processor driving of high frequency switch power configuration is coupled in one first directly First switch between galvanic electricity potential source and a terminal of the first inductor high frequency between turning on and off switches, whereby the Apply the sequence of high frequency pulses caused by the first DC voltage source by intermittent access or release at the terminal of one inductor； And there also is provided on power line the distance relative to high frequency switch power closer to dc voltage changer the second inductor； Dc voltage changer injects a series of sequence of high frequency pulses as carrier signal for carrying data information on power line Mode are as follows: the processor driving of dc voltage changer configuration is coupled in second DC voltage source and the second inductor Second switch high frequency switching between turning on and off between one terminal, applies whereby at the terminal of the second inductor The sequence of high frequency pulses caused by the second DC voltage source by intermittent access or release.

The above-mentioned system for being integrated with high frequency switch power and dc voltage changer, in which: dc voltage changer Processor receives the mode of the carrier signal of high frequency switch power sending from power line are as follows: its air core coil configured passes Sensor is used to filter the clutter other than carrier signal for incuding carrier signal, the filter of configuration from power line, It is captured again by the processor of dc voltage changer configuration to true carrier signal；The tubular wire that dc voltage changer is equipped with The mode of coil sensor induction carrier signal further include: be respectively coupled to the one of a pair of of voltage output end of dc voltage changer The air core coil that power line is had also cross air core coil sensor；And limit a pair of power line respectively pass through it is hollow The sense of current flowed through in the Part portions of coil is identical.

The above-mentioned system for being integrated with high frequency switch power and dc voltage changer, in which: the place of high frequency switch power Reason device receives the mode of the carrier signal of dc voltage changer sending from power line are as follows: its air core coil configured passes Sensor is used to filter the clutter other than carrier signal for incuding carrier signal, the filter of configuration from power line, It is captured again by the processor of high frequency switch power configuration to true carrier signal；The air core coil of high frequency switch power configuration passes The mode of sensor induction carrier signal further include: be respectively coupled to a pair of electricity of a pair of of voltage input-terminal of high frequency switch power The air core coil that the line of force has also cross air core coil sensor；And limit flow through a pair of power line respectively pass through it is hollow Sense of current in the Part portions of coil is identical.

It is subsequent in an optional but nonessential embodiment, disclose and a kind of realize carrier wave in solar power system Signal is sent and received method, it is characterised in that: is connected in series by multiple power levels optimizer, every level-one power optimization device is used In executing maximum power point tracking to a photovoltaic module matching with it, concatenated multiple power levels optimizer by power line to One energy collecting device conveys electric energy；The method includes: the input terminal in the reception electric energy close to energy collecting device Power line on arrange the first inductor, energy collecting device is when sending carrier signal to any level-one power optimization device: energy The processor control of amount collection device configuration is coupled in the between the first DC voltage source and a terminal of the first inductor Turning on and off a high frequency switching to one switch periods；To inject at the terminal of the first inductor by the first direct current Voltage source periodically accessed and discharge and a series of high-frequency impulses as carrier signal for causing；And any level-one power The processor of optimizer configuration from power line when receiving carrier signal: its induction type air core coil sensor configured for from Carrier signal is incuded on power line, and scheduled carrier signal is then received by the processor that power optimization device configures again.

Above-mentioned method, in which: the energy collecting device also includes at least: inverter or header box are battery The charger of charging.

Above-mentioned method, in which: the power optimization device includes booster circuit or reduction voltage circuit or step-up/step-down circuit, is appointed Power optimization device of anticipating is used to its received input current and input voltage being arranged to match with it photovoltaic module Maximum power point.

Above-mentioned method, in which: the induction type air core coil sensor sensing carrier wave that any level-one power optimization device is equipped with The mode of signal further include: be respectively coupled to a pair of of power line of a pair of output terminals of power optimization device also cross induction type The air core coil that air core coil sensor has；And one of a pair of power line passes back through tubular wire with respect to another one Circle, at least so that respectively to pass through the sense of current flowed through in the Part portions of air core coil identical for a pair of power line.

Above-mentioned method, in which: the first inductor has the first end for the input terminal for being respectively coupled to energy collecting device Son and the Second terminal for being coupled to concatenated multiple power levels optimizer；First DC voltage source is connected by the first switch To the Second terminal of the first inductor, make on the first inductor to the power line path of energy collecting device for carrier signal Induction reactance is higher than the induction reactance that carrier signal is directed on the first inductor to the power line path of multiple power levels optimizer.

Finally in an optional but nonessential embodiment, discloses one kind and realize carrier wave in solar power system Signal is sent and received method, it is characterised in that: is connected in series by multiple power levels optimizer, every level-one power optimization device is used In executing maximum power point tracking to a photovoltaic module matching with it, concatenated multiple power levels optimizer by power line to One energy collecting device conveys electric energy；The method includes: to be used for output power close to every level-one power optimization device The second inductor is arranged on the power line of output terminal, is sending carrier wave to energy collecting device in any level-one power optimization device When signal: the processor control of power optimization device configuration be coupled in the second DC voltage source and the second inductor a terminal it Between second switch periodically turning on and off the switching of high frequency；To at the terminal of the second inductor injection by the Two DC voltage sources periodically accessed and discharge and a series of high-frequency impulses as carrier signal for causing；And energy is received The processor of acquisition means configuration from power line when receiving carrier signal: its induction type air core coil sensor configured for from Carrier signal is incuded on power line, then scheduled carrier signal is received by the processor of energy collecting device configuration.

Above-mentioned method, in which: the induction type air core coil sensor sensing carrier signal that energy collecting device is equipped with Mode further include: a pair of of the power line for being respectively coupled to a pair of input terminals of energy collecting device is hollow also cross induction type The air core coil that coil pickoff has；And one of a pair of power line passes back through air core coil with respect to another one, At least so that respectively to pass through the sense of current flowed through in the Part portions of air core coil identical for a pair of power line.

Above-mentioned method, in which: the energy collecting device includes: inverter or header box or to charge the battery Charger；The power optimization device includes booster circuit or reduction voltage circuit or step-up/step-down circuit, any one power optimization device For its received input current and input voltage to be arranged to the maximum power point of match with it photovoltaic module.

Above-mentioned method, in which: also set up what the reception of the second class power optimization device was sent from first kind power optimization device Carrier signal and the processor of the second class power optimization device configuration receive the transmission of first kind power optimization device from power line When carrier signal: the induction type air core coil sensor of the second class power optimization device is used to incude carrier signal from power line, The scheduled carrier signal that first kind power optimization device issues is received by the processor of the second class power optimization device configuration again.

Above-mentioned method, in which: the induction type air core coil sensor sensing carrier wave letter of the second class power optimization device configuration Number mode further include: be respectively coupled to a pair of of electric power of a pair of output for output power of the second class power optimization device The air core coil that the induction type air core coil sensor that line is configured also cross the second class power optimization device has；And a pair One of power line passes back through air core coil with respect to another one, at least so that a pair of power line respectively passes through air core coil Part portions in the sense of current that flows through it is identical.

Detailed description of the invention

To keep above-mentioned purpose and feature and advantage more obvious and easy to understand, specific embodiment is done with reference to the accompanying drawing Detailed explaination, read it is described further below and referring to the following drawings after, the feature and advantage of the application will be evident.

Fig. 1 is the example schematic that mutual data transmission can be executed between the first equipment and the second equipment.

Fig. 2 is the example schematic carried out data transmission between the first equipment and the second equipment by power line.

Fig. 3 is that multistage photovoltaic cell string joins to inverter power supply and by the example schematic of power line communication.

Fig. 4 is to send carrier wave in inverter side and receive the schematic diagram of carrier wave in power optimization device side.

Fig. 5 is in inverter side by sending the schematic diagram of carrier wave by EMI FILTER circuit.

Fig. 6 is the schematic diagram that the power optimization device with booster circuit and reduction voltage circuit receives carrier signal.

Fig. 7 is can also to use multi-electrical level inverter schematic diagram other than using conventional bridge-type inverter.

Fig. 8 is the schematic diagram for cooperating the pulse train for generating carrier signal with relatively positive DC voltage source.

Fig. 9 is the schematic diagram for cooperating the pulse train for generating carrier signal with relatively negative DC voltage source.

Figure 10 is the schematic diagram that the pulse train of carrier signal is received with induction type air core coil sensor detecting.

Figure 11 is the schematic diagram that the pulse train of carrier signal is received with the coupling detecting of coupling transformer.

Figure 12 is to send carrier wave in power optimization device side and receive the schematic diagram of carrier wave in inverter side.

Specific embodiment

Below in conjunction with each embodiment, clear and complete elaboration, but described reality are carried out to technical solution of the present invention Applying example only is the present invention with the embodiment used in illustrating is described herein and not all embodiment, based on the embodiments such as this, this field Technical staff scheme obtained belongs to protection scope of the present invention without making creative work.

Photovoltaic generating system is usually made of component solar panel permutation and power inverting part, inverter and mains net Between can be arranged in conventional scheme low frequency isolation transformer realize and mesh portions and panel array electrical isolation.Photovoltaic hair Electric system also typically includes the power equipments such as header box, is first converged to lower-powered sub-loop and concentrates inversion again, confluence Case is to guarantee that photovoltaic module orderly connects and the termination of combining functions, the device can ensure hair in photovoltaic generating system Electric system easily is switched off circuit in maintenance, inspection, reduces the range having a power failure when photovoltaic system breaks down.Header box refers to User can get up the identical photovoltaic cell series connection of a number of, specification, form one or several battery strings groups, then again will Several photovoltaic tandem parallel connections access header box, after converging in photovoltaic combiner box, pass through controller and DC power distribution cabinet and light The volt power equipments such as inverter and AC power distribution cabinet/AC distribution panel match, to constitute complete photovoltaic generating system, realize inversion It is grid-connected with alternating current.Photovoltaic generating system also typically includes the power equipments such as charger to charge the battery and certain photovoltaics Electricity generation system further includes power optimization device etc..Power optimization device is the voltage-dropping type or booster type realized from DC to DC Voltage changer, it is also the battery maximum power tracing power equipment of a unimodule rank simultaneously.Power optimization device is to list After component carries out maximum power optimization, after being transferred to terminal inverter progress direct current to the processing of alternating current, local use is supplied Or power generation online.Terminal inverter usually can be the pure contravariant equipment of no maximum power tracing or chase after equipped with second level maximum power The contravariant equipment of track.The power optimization device of mainstream is broadly divided into Series FPB and parallel FPB, and topology is also slightly distinguished, for example topology packet Include decompression BUCK circuit or boosting BOOST circuit or buck BUCK-BOOST circuit.

The power optimization device of tandem type using fixed voltage design concept.In simple terms, inverter control plate root The voltage that a stable DC bus is determined according to exchange end voltage summarizes the maximum power that each concatenated optimizer is collected, into And calculate bus current and by wirelessly or electrically power carrier-wave transmission to optimizer.The voltage etc. of each optimizer output end at this time In collected component maximum power power divided by bus current.After when component is blocked the case where, optimizer can root Redefine peak power output value according to volt-ampere curve, by by wirelessly or electrically power carrier-wave transmission to inverter control plate.It is tieing up Hold DC bus-bar voltage it is constant under the premise of, control panel recalculates bus current and feeds back to each optimizer.It is blocked at this time Component power reduce, the optimizer can also be depressured confirm output electric current it is up to standard.The optimization of other components not being blocked Device, which can then boost, carrys out output electric current up to standard.If component is blocked excessively serious, power optimization device will bypass this and block Serious component until its be restored to can working condition, this adjusting is process that a voltage is supplied in fact, to be supplied to Most stable and optimization the DC terminal busbar voltage of inverter.The power optimization device of parallel connection type equally can also be using fixed electricity The optimization of pressure and inverter mode.Inverter determines busbar voltage, each optimizer according to the close ring of direct current and alternating current Respective output end voltage is boosted to specified numerical value, the electric current for inputting inverter at this time is equivalent to each optimizer and is collected into Maximum power divided by electric current after specified voltage summation.Since the voltage influence of spissatus layer blocked for component is little, The main electric current for influencing output, parallel optimizer are substantially not in frequent voltage mispairing adjusting, and due to being battery Between be the relationship being connected in parallel, the electric current of output will not affect one another again, so this can be regarded as parallel optimizer really Compared to the advantage of tandem.If individual elements can not start booster apparatus by serious block simultaneously, optimizer is automatic Error signal is disconnected and sent, and is restarted until occlusion issue removes.

The maximum feature of the so-called power optimization device of photovoltaic generating system is exactly that component and inverter functionality are separated, and is had Not in traditional photovoltaic system.It seems component and inverter is accessed by optimizer, in fact component is used only to starts optimization device And it is cooperated after the maximum power of optimizer collection assembly and gives inverter function.Because the technology of fixed voltage, solves light The problem of partial occlusion of photovoltaic generating system, for the system of multiple groups string, each group string component count do not need yet it is equal, even Even if with each component in a string groups towards do not need.In addition to circuit topology is in the advantage of structure, power optimization Device also has inborn advantage on maximum power point tracking algorithm MPPT.The tracing algorithm of traditional MPPT maximum power point is basic It is all based on two kinds: climbing method and logic method of determining and calculating.Subtrace method these also use combined techniques: such as climbing method binding constant Area method cooperates the full scan method of Fixed Time Interval to find maximum power point；Also have in conjunction with slope polarity method and conductance increasing Amount method, cooperation detect paces control methods to find maximum power point.It is directed to the maximum power tracing of photovoltaic cell in the prior art Any scheme be equally applicable to the voltage conversion circuit or power optimization device of the application, for example common maximum power tracing Method has constant voltage process, conductance increment method, perturbation observation method etc., and how the application no longer executes maximum work to voltage conversion circuit The scheme of rate tracking MPPT is repeated, and is based on this advantage, power optimization device can be allowed compared to traditional inverter There is the electricity of about 5-30% or so to be promoted.

In field of photovoltaic power generation, the optimizer for providing power and header box, inverter, the charger etc. that receive power are related to There is close communication requirements between the generation power equipment arrived.About communication requirement: power line carrier, PLC is different from common Tie line, the original intention of power line be in order to carry out electric energy and the simultaneously transmission of non-data, for data communication its Channel is undesirable, belongs to highly unstable transmission channel, is in particular in that noise is significant and signal decaying is serious.Industry is gram The above problem is taken, power wire broadband carrier technology uses the modulation techniques such as spread spectrum, orthogonal frequency division multiplex OFDM.Multi-carrier orthogonal Frequency division multiplexing is one of the effective means for solving to transmit interference problem so far on power line.Broadband power line communication uses OFDM technology can effectively resist multi-path jamming, and the signal being disturbed is made to remain to reliable reception.Even in power distribution network by tight Interfere again in the case where, it also can provide high bandwidth and guarantee bandwidth for transmission efficiency, to realize the high speed reliable communication of data. The main thought of OFDM technology is the independent difference that given channel is divided into tens or even thousands of quantity in the frequency domain of 2-34MHz Orthogonal sub-channels, be modulated on each of the sub-channels using single sub-carrier, each subcarrier transmitting data in parallel.In number According in transmission process, power wire broadband carrier equipment is by the disturbance regime of the lasting each subchannel of detection, if it find that having prominent The electromagnetic interference in harmonic wave generation or certain subchannels that the interference of hair such as mixing is come in is very serious, power wire broadband carrier Equipment can be adjusted intelligently, that is, be transferred to transmission in other glitch-free subchannels thus to avoid having on power line The frequency range of interference source.Power wire broadband carrier technology can be effective against the electromagnetic interference on power line, have very strong Anti-fading ability, the high speed data transfer suitable for multipath propagation environment is communication objective to reach.Carrier wave has bandwidth carrier Narrowband and broadband power line carrier mode are used with narrowband carrier etc., has similar place in application implementation mode: by electricity Powerline networks, which are realized, exempts from wiring or few wiring between communication node, in communication mechanism, communication protocol and carrier wave and modulation system etc. There are difference for aspect.The application is compatible with the communication protocol and modulation system of existing power line carrier, but issues carrier wave letter Number and receive carrier wave mechanism be different from the prior art carrier communication.

Referring to Fig. 1, power equipment can be different in the first equipment 101 of field of photovoltaic power generation and the second equipment 102 And the relationship between them is: the former latter conveys electric energy or the latter and conveys electric energy to the former, if certainly between them There is no any electrical energy transportation relationships to be also allowed, but needs to communicate between them, for example one assigns respectively another one Various data informations are transmitted in kind instruction.Data transmission system is the important component of various intelligent control systems, wired The main live wire carrier wave of data mode or carrier frequency, coaxial line, RS232 serial ports, RS485 and on-off model line and USB etc., wireless near field communication mainly have the IPv6/ of wireless RF433/315M, bluetooth, ZIGBEE, Z-ware and routine 6Lowpan etc., conventional internet communication include the mobile air network such as WIFI and Ethernet etc. and 3G/4G with rate Reduce the foundation for being also gradually suitable for communication.

Referring to fig. 2, the first equipment 101 is connected with the second equipment 102 by power line LN, and the hypothesis of the second equipment 102 includes The electric energy supplier such as chemical cell or fuel cell or photovoltaic cell, the hypothesis of first equipment 101 contain header box or inversion Device or charger etc. using electric energy energy collecting device, the second equipment 102 by power line LN by the electric energy of collection or from The electric energy that body generates is conveyed to the first equipment 101 by power line LN, each based on needing to transmit between two equipment of various purposes Information is planted to reach expected communication function, power line LN is the medium for carrying carrier signal.Carrier wave can be sine wave, can also To be non-sinusoidal waveform such as periodic pulse train, referred to as modulated signal, the all-wave that it contains modulated signal is special after carrier wave is modulated Sign, carrier wave is continuous signal of the work in single-frequency predetermined.Using carrier wave so that it can be to be suitble to the form transmitted It indicates data information, is exactly so-called modulation.Power line carrier, PLC and telecommunication system wired carrier-current communication have no in principle compared with Big difference, only with power line instead of aerial line.But multiplexed communications are such without image of Buddha aerial line on power line Simply, it does not require nothing more than and guarantees that equipment is unaffected, also requiring the optimal carrier signal transmission efficiency of acquisition, this just must be to carrier wave Rational design generation mechanism is carried out, the connectivity problem between power line and power equipment is solved.Carrier wave is generated simultaneously by oscillator The electric wave transmitted on the communication channel as power line is used to transmit voice or other types of data information after being modulated. Carrier wave is the carrying tool of 102 data information of the first equipment 101 and the second equipment.

Referring to Fig. 3, total is had after the voltage superposition that the second such as power optimization device of equipment 102 of tandem type respectively exports The voltage of high potential is supplied to the first equipment 101 such as inverter, and the first equipment 101 summarizes concatenated second equipment 102 respectively The maximum power of collection, the first equipment 101 such as inverter by communication known each second equipment 102 summarize power it Afterwards, and then the bus current or other information of power line LN are calculated, and informing is transmitted by wirelessly or electrically power carrier communication again Give each second equipment 102.At this time each second equipment 102 as optimizer output end voltage be equal to itself collected by The power of battery maximum power is divided by bus current.Channel radio is typically used between first equipment 101 and the second equipment 102 The real-time delivery of data information is realized in letter or carrier communication.

Referring to fig. 4, in this embodiment the first equipment 101 use multi-electrical level inverter, naturally it is also possible to be it is single-phase or The inverter of the bridge-type H-BRIDGE of multiphase, even header box etc..Second equipment 102 uses power optimization device, it is also straight Galvanic electricity pressure converter is simultaneously used to receive the offers such as photovoltaic module/chemical industry battery/fuel cell at its input terminal Electric energy is converted into the output power of output terminal, notices that some power optimization device is needed some paired battery or group The output electric current and output voltage setting of part are at battery/component maximum power point, and in other words, some power optimization device needs One battery/component maximum power point of the power setting Cheng Yuqi to be inputted pairing.

Referring to fig. 4, photovoltaic module array is the basis that photovoltaic generating system is converted from luminous energy to electric energy, is shown in Fig. 4 Basic battery strings group is installed, inside battery strings group: each battery strings group is by multiple mutual strings in photovoltaic module array The photovoltaic module 103 of connection connection, which concatenates, to be constituted, and photovoltaic module 103 can also be substituted for fuel cell or chemical cell.Battery strings Group is external: multiple battery strings group parallel connections provide electric energy to the first equipment 101.Every piece of photovoltaic module or photovoltaic electric in this application Pond 103 is each equipped with the power optimization circuit for executing maximum power tracing calculation MPPT, such as first order photovoltaic module 103 generates Electric energy power conversion is carried out to execute power optimization by first the second equipment 102-1, what second level photovoltaic module 103 generated Electric energy carries out power conversion by second the second equipment 102-2, and class is pushed into the photovoltaic voltage that N grades of photovoltaic module 103 generates Power conversion is carried out to execute power optimization by N grades of the second equipment 102-N, notices that N here is natural number.In fact and often The power of the corresponding second equipment 102-2/ power optimization circuit output of block photovoltaic cell 103 just characterizes the photovoltaic cell 103 and mentions For the actual power in battery strings group.It is assumed that being serially connected with first order photovoltaic module 103, second level light inside some battery strings group The photovoltaic module 103 of component 103 ... to N grades is lied prostrate, the second equipment 102-1 of the first order is used for first order photovoltaic cell 103 Photovoltaic electric potential source execute maximum power tracing and carry out voltage conversion and export V₁, analogize the second equipment until N grades 102-N is used to executing maximum power tracing and carrying out voltage conversion and export the photovoltaic electric potential source of N grades of photovoltaic cell 103 V_N.It can learn, total tandem voltage is equal in battery strings group: the voltage V that the second equipment 102-1 of the first order is exported₁In addition The voltage V that second equipment 102-2 of the second level is exported₂Then along with the voltage V that the second equipment 102-3 is exported₃..., according to The voltage V of secondary the second equipment 102-N output for being added to N grades always_N, the operation result of total tandem voltage is equal to V₁+V₂ +…V_N.Power optimization circuit or so-called second equipment 102-2 can use booster type voltage conversion circuit, voltage-dropping type voltage Conversion circuit or buck-boost type voltage conversion circuit etc..Second equipment 102-1 of the first order, the second level the second equipment 102-2 It is connected in series to N grades of the second equipment 102-N etc. by power line LN, is respectively exported on power line LN by 102-1 to 102-N The tandem voltage that is superimposed of voltage be fed to similar to after the power equipments such as header box or inverter confluence and inversion It is grid-connected again, it is conveyed to first again after for example being summarized by the concatenated second respective output power of equipment 102-1 to 102-N at different levels Equipment 101, multiple battery strings groups are the relationship being connected in parallel when to inverter power supply in assembly array.

Referring to fig. 4, each voltage conversion circuit such as second equipment 102-N of equipment 102-1 to N grades of the second of the first order It is each equipped with processor 112, the voltage conversion circuits such as BUCK, BOOST, BUCK-BOOST execute powerinjected method in the art MPPT calculation is that the pulse width modulating signal PWM exported by processor 112 realizes that those skilled in the art both knows about, Pulse width modulating signal PWM be mainly the switch element in driving voltage conversion circuit realize boosting to cell voltage, Decompression and buck etc..In switch power supply system, power supply, as switch element, passes through periodicity using power semiconductor On-off switch, the duty ratio of control switch element adjust output voltage.Switching Power Supply mainly by input circuit, translation circuit with And the composition such as output circuit and control unit.Power conversion is core, is mainly made of switching circuit, in order to meet Gao Gong Rate density requirements, converter need work in high frequency state, and switching transistor will be using switching speed height, turn-on and turn-off time Short crystal arm, typical power switch have power scr, power field effect transistor and insulated type bipolar junction transistor etc. It is a variety of.It is a variety of that control mode is divided into pulse width modulation, pulsewidth modulation and frequency modulation(PFM) hybrid modulation, pulse frequency modulated etc., Common pulse width modulation mode.DC to DC DC/DC converter such as voltage changer, power pack are suitable for the second equipment 102, power optimization device is the converter of DC to DC, belongs to the scope of Switching Power Supply and is also the battery of unimodule rank Maximum power tracing power equipment.First equipment 101 equally also belongs to the application of switch power supply system using inverter, only Switched-mode power supply SMPS according to the difference for outputting and inputting voltage form, be divided into alternating current to alternating current AC/AC converter Such as frequency converter, transformer, it is also also divided into the AC/DC converter such as rectifier of AC-to DC, and is divided into direct current to alternating current DC/AC converter, and be divided into DC/DC the converter such as voltage changer, power pack of DC to DC electricity.First equipment 101 be the converter for example inverter for belonging to direct current to alternating current DC/AC in the present embodiment.

Referring to fig. 4, lead to after the second equipment 102-1 to N grades of multi-stage power source, that is, first order of the second equipment 102-N series connection It crosses power line LN and provides electric energy/power supply to the first equipment 101, DC bus power supply is executed direct current to exchange by the first equipment 101 The inversion of electricity, the alternating current of generation can be used locally or grid-connected.Assuming that inverter is the multi-electrical level inverter of flying capacitor type Or single-phase semi-bridge, single-phase full bridge, push-pull type, three-phase bridge type converter, processor 111 is required to export so-called driving inversion The pulse width modulation (PWM) of device switching device.The theoretical foundation of many inversion occasions be with the amplitudes such as a series of but width not With relatively narrow pulse replace a half-sinusoid, several equal parts of half-sinusoid can regard several pulses being connected with each other as Sequence, width is equal but amplitude differs, and is equivalent to and replaces midpoint to be overlapped with rectangular pulse, area namely momentum are equal.Industry The principle of SPWM waveform: the expectation waveform exported using sine wave as inverter, the isosceles three with frequency than expectation wave height much Angle wave uses frequency sine wave identical with desired waveform as modulating wave, when modulating wave intersects with carrier wave, by it as carrier wave Intersection point determine on-off moment of inverter switch device, thus obtain in the half period of sinusoidal modulation wave in both sides compared with The rectangular wave of the narrow but amplitudes such as series of wide middle and wide not grade.SPWM waveform namely pulse width are become by sinusoidal rule Change and the PWM waveform equivalent with sine wave, thus realizes inversion purpose.

Referring to fig. 4, it is assumed that the first equipment 101 has input terminal RE1 and input terminal RE2, then the second of the first order sets The total voltage provided after standby 102-1 to N grades of the second equipment 102-N series connection just passes through power line LN and is input to for example inversion The one group of input terminal RE1 and input terminal RE2 that first equipment 101 of device has, are respectively coupled to input terminal RE1-RE2's One group of power line LN as shown in the figure is equivalent to DC bus.In view of the actual geographic distribution of power equipment, it may be possible to inversion It is remote relative to optimizer that device leaves battery.The electricity for conveying power supply is connected between second equipment 102 and the first equipment 101 Line of force LN, and be disposed on power line LN the distance relative to the second equipment 102 closer to the first equipment 101 inductor L, such as Inductor L is connected to input terminal RE1 or input terminal RE2.If attempted in 101 side of the first equipment transmission carrier wave and second 102 side of equipment receives carrier wave, then position of the inductor L on power line should be closer to the first equipment 101.First sets The mode of standby 101 sending carrier signal: it is provided between a terminal such as LT2 of a DC voltage source S and inductor L First switch Q1, DC voltage source S can even be connected in parallel on the both ends LT1-LT2 of inductor L with first switch Q1.Inductor L One end LT1 be directly coupled to input terminal RE2 and the other end LT2 of inductor L is coupled to optimizers at different levels, be equivalent to terminal LT1 is to be directly adjacent to the terminal of inverter and terminal LT2 is terminal away from inverter.In some optional embodiment, limit The anode for determining DC voltage source S is coupled to inductance terminal LT2, negative couplings to inductance terminal LT1, by DC voltage source S and The first switch Q1 of series connection with it is equivalent to an oscillator.Processor 111 sends the mode in carrier signal to power line LN Are as follows: first switch Q1 is directly driven or drives indirectly using driving circuit, first switch Q1 high frequency between turning on and off is cut It changes, DC voltage source S is coupled on power line when first switch Q1 is connected whereby or DC voltage source S is the It is discharged from power line when switch Q1 shutdown.Just quite in power line LN when the switching of first switch Q1 high frequency On be filled with the sequence of high frequency pulses for being considered as carrier signal for carrying data information: switch Q1 connect just introduce it is one narrow High-frequency impulse, high-frequency impulse disappears after shutdown, and being again switched on switch Q1, and then next relatively narrow high-frequency impulse is coupled again Onto power line LN, and so on.In some optional embodiment, it can be assumed that the negative couplings of DC voltage source S to The ground reference of one equipment 101, for example the ground reference of the first equipment 101 is using the current potential of input terminal RE2 as ginseng Examine ground potential.The high frequency switching of final first switch Q1 causes a series of continuous high-frequency impulses introduced on power line just to regard To carry the carrier signal of information and being sent out.

Referring to fig. 4, data namely said carrier signal are passed through carrier wave by the first equipment 101 and its matched processor 111 After sending module namely its oscillator are broadcast on power line LN, other electronic equipments can be in power line using decoder On to carrier wave decode.As the side for sensing and decoding carrier signal: the second equipment 102-1 at different levels to 102-N each Carrier sense and decoded portion usually also have carrier sensor module 105 and filter module, and what is illustrated second sets Standby 102 are also configured with the control unit of similar MCU/DSP etc. or processor 112 to handle data.It needs that power line LN is allowed to pass through Carrier sensor module 105(such as induction type Roche air core coil sensor etc.) have as induction component air core coil, The carrier signal on power line LN can be detected by carrier sensor module 105 whereby, in practical applications in order to more accurate The true carrier data of capture and shield all kinds of incoherent noises, filter module again feels carrier sensor module 105 The carrier signal measured is further filtered, those clutters not in designated frequency range are filtered out, only in specified frequency Carrier wave within the scope of rate can just indicate expected true carrier signal, so that control unit or processor 112 receive true load Wave signal and its data information of decoding.Induction type air core coil sensor has included at least the induction coil and low noise of sensing unit The cores such as acoustic amplifier, induction coil are the key elements for obtaining magnetic field signal and being converted into voltage signal, and amplifier is then It is in order to which faint voltage signal is carried out low noise amplification.

Referring to fig. 4, based on force carrier signal on power line LN more to the direction of the second equipment 102 at different levels pass It broadcasts and not feed back to the first equipment 101, inductor L has the first terminal LT1 for being coupled to the first equipment 101 and is coupled to the The Second terminal LT2 of two equipment 102, carrier signal are injected from Second terminal LT2: DC voltage source S is by first switch above-mentioned Q1 is connected to the Second terminal LT2 of inductor L, ensures and believes on inductor L to the power line path of the first equipment 101 for carrier wave Number induction reactance, be higher than on inductor L to the power line path of the second equipment 102 at different levels be directed to carrier signal induction reactance.It carries Wave signal also can be realized identical function from first terminal LT1 injection, but more preferably mode is injected from Second terminal LT2 A series of high-frequency impulse.

Referring to Fig. 5, it is to belong to the change of direct current to alternating current DC/AC in the present embodiment that the first equipment 101, which is mentioned above, Parallel operation and the specific type for also belonging to switched-mode power supply SMPS, then when 101 Operation switch mode power of the first equipment It, which switchs the switching noise generated caused by operation, can to generate electricity in the various electronic equipments for including switched-mode power supply Magnetic disturbance.The noise that switching noise indicates the switching operating frequency due to the power switch of configuration switched-mode power supply and occurs divides Amount and certain harmonic components.When electromagnetic interference occurs, the periphery electronic device of the electric device including switched-mode power supply Operation be interfered.The conventional process for inhibiting electromagnetic interference to occur is change modulation switch operating frequency, but frequency modulation(PFM) Method can generate the output voltage ripple modulated according to switching operating frequency, which is added to by input voltage Ripple caused by output voltage ripple component, to generate bigger output voltage ripple.And the power supply of EMI electromagnetic interference Filter can also filter out the common mode interference noise and DM EMI noise of Switching Power Supply generation.

Referring to Fig. 5, it is assumed that the output that the electric energy captured from the battery matched with it is converted by some second equipment 102 Power is conveyed to the first equipment 101 from power line LN1 and power line LN2, which is respectively coupled to first The input terminal RE1-RE2 of equipment 101.It is connected between the input terminal RE1-RE2 of first equipment 101 and inhibits ripple and energy storage Capacitor CIN.The voltage of second equipment 102 output just characterizes the reality that the photovoltaic cell matched with it is performed after power optimization Voltage, the both ends that the output terminal of the second equipment 102 is respectively coupled to its output capacitance CO also correspond to output capacitance CO to electricity Line of force LN1-LN2 power supply.Electromagnetic interface filter 210 can arrange certain grade of differential mode inductors on power line LN1 and/or in power line Arrange certain grade of differential mode inductors on LN2, electromagnetic interface filter 210 can also be arranged between power line LN1-LN2 it is one or more certain Grade differential mode capacitor (X capacitor) C1-C2.Electromagnetic interface filter can also arrange common-mode inductor and/or in electric power on power line LN1 Arrange that common-mode inductor, electromagnetic interface filter can also arrange one or more pairs of common modes between power line LN1-LN2 on line LN2 Capacitor (Y capacitance) notices that the midpoint of common mode capacitance pair is ground connection.Common mode current flows through common-mode inductor analysis: when common mode electricity When stream flows through common mode inductance, since direction of the common mode current in a pair of symmetrical common-mode inductor is identical, a pair of of common mode inductance Equidirectional magnetic field is generated in coil, is at this moment increased the inductance of a pair of of common mode inductance coil, is increased a pair of of common mode inductance Coil makes common mode current by bigger inhibition, achievees the purpose that attenuation common-mode electric current, play suppression to the induction reactance of common mode current The effect of common mode interference noise processed, the filter action along with common mode capacitance to common mode interference noise, common mode interference obtain obviously Inhibit.The concrete analysis of certain grade of differential mode inductor circuit: certain grade of differential mode inductors and so-called X capacitor circuit in series, certain Grade differential mode inductors can induction reactance to certain grade of differential mode High-frequency Interference it is big, the capacitive reactance that so-called X capacitor interferes high-frequency noise is compared It is small, certain grade of differential mode interference noise is filtered out in this way, subsequent circuit cannot be flowed to, reaches and certain grade of differential mode High-frequency Interference is inhibited to make an uproar The purpose of sound.

Referring to Fig. 5, by means of the DM(differential mode of electromagnetic interface filter 210) inductance or CM(common mode) inductance, in this embodiment with Explanation is illustrated for DM inductance L1 on the power line LN2 being arranged in one group of power line: in some DC voltage source S and DM The first switch Q1 for being controlled by processor 111 is equipped between a terminal of inductance L1, the processor 111 of inverter configuration is sent Mode in carrier signal to power line LN1-LN2 are as follows: the switching of driving first switch Q1 high frequency between turning on and off, it is main It moves and is periodically injected into high-frequency impulse on power line LN from a terminal of so-called DM inductance L1, be equivalent to a load Wave oscillator, the sequence of high frequency pulses for carrying data information injected on power line LN whereby is considered as carrier signal, above It is that the first equipment 101 realizes that carrier wave is sent.Although hair can be used as by means of the DM inductance or CM inductance of EMI FILTER One of effective component of carrier wave is sent, but the independent inductor L itself in Fig. 4 can also act as the effective first device for sending carrier wave Part, so being only optinal plan by means of the inductance of electromagnetic interface filter rather than necessary scheme.

Referring to Fig. 5, when the processor 112 of the second equipment 102 configuration receives carrier signal from power line LN: from so-called The induction type air core coil sensor that reason device 112 configures from power line LN for incuding carrier signal, and so-called processor The filter of 112 configurations is used to filter the clutter other than carrier signal, the processor then configured by the second equipment 102 again 112 receive scheduled carrier signal.As the means for receiving carrier signal, specifically: carrier sensor module 105 is for example felt Formula air core coil sensor strip is answered to have the air core coil as induction coil, implementation of a pair of of the power line as bus in Fig. 4 Only only have some power line to pass through air core coil in example, and in the present embodiment, a pair of of power line as DC bus It is needed in the 5 embodiment of figure 5 also cross air core coil.In conventional scheme, a pair of of power line LN1- as DC bus LN2 is parallel wiring side by side, but in the application, it is contemplated that they are needed also cross air core coil, power line in Fig. 5 LN1 passes back through air core coil relative to power line LN2, is meant that we at least require so that power line LN1 is across hollow The direction of the electric current IL1 flowed through in the Part portions LN1-1 of coil and power line LN2 pass through the Part portions LN2- of air core coil The direction of the electric current IL2 flowed through in 1 is identical.Such as we first assume that the node N1 of the second equipment 102 is relative to node N2 Positive potential, then bus current is the input terminal RE1 that the first equipment 101 is flowed to from the output node N1 of the second equipment 102, then Bus current flows out from the sub- RE2 of relative input end of the first equipment 101 and flows to the output node N2 of the second equipment 102.If Power line LN1-LN2 it is parallel pass through air core coil without allowing a bus therein to pass back through air core coil, then electric power The bus current of line LN1 flows to the first equipment 101 from the second equipment 102, while can be from there is also the bus current of power line LN2 First equipment 101 flows to the second equipment 102, eventually leads to power line LN1-2 and respectively passes through and flows in the Part portions of air core coil The sense of current crossed is converted into voltage signal portion failure or all failures on the contrary, this will lead to magnetic field signal.Conversely, this one Respectively pass through that the sense of current flowed through in the Part portions LN1-1 and LN2-1 of air core coil is identical then may be used to power line To avoid the drawbacks such as this, the opposite another one of one of power line is set and passes back through induction coil, such as: although power line LN1 Bus current flows to the first equipment 101 from the second equipment 102, and the bus current of power line LN2 can flow to from the first equipment 101 Two equipment 102 do not influence the side for the electric current that each flows through in the Part portions LN1-1 and LN2-1 of air core coil but To the current direction in Part portions LN1-1 and LN2-1 is all to flow to the second equipment from the first equipment.

Referring to Fig. 6, photovoltaic module PV_M generates desired output voltage using the second equipment 102M and is performed simultaneously maximum work Rate point tracking.The first input end NI1 of second equipment 102M is connected to the anode of photovoltaic module PV_M and there are also the second equipment The second input terminal NI2 of 102M is connected to the cathode of photovoltaic module PV_M.The first output end NO1 of second equipment 102M is coupled to The second output terminal NO2 of second equipment 102M unique first node N1 and the second equipment 102M are coupled to the second equipment The second node N2 of 102M, the output capacitance CO of the second equipment 102M be connected its first node N1 and second node N2 it Between.Second equipment 102M by electric energy that photovoltaic module provides execute power conversion and that is, the synchronous maximum power tracing that executes drill It calculates, the DC output voltage that final second equipment 102M is exported generates defeated in the first output end of the second equipment 102M and second Between outlet, output voltage loads the upper of the output capacitance CO between first node N1 and second node N2.In second equipment 102M The power switch S1 and power switch S2 of decompression converting circuit be connected between first input end NI1 and the second input terminal NI2, It is defeated that the power switch S3 and power switch S4 of the voltage up converting circuit of second equipment 102M are connected on the first output end NO1 and second Between outlet NO2.Both power switch S1 and power switch S2 in decompression converting circuit are connected in the first interconnecting nodes NX1, And both power switch S3 in voltage up converting circuit and power switch S4 are connected in the second interconnecting nodes NX2, then circuit is opened up Flutter that both both middle front side power switch S1-S2 first connected interconnecting nodes NX1 and rear side power switch S3-S4 are connected the Main inductance element LL, second output terminal NO2 and the second input terminal NI2 are provided between two interconnecting nodes NX2 can be with direct-coupling To together and setting their current potential as a reference potential REF1.What is be arranged between the first output end and second output terminal is defeated Out corresponding to capacitor CO, input electricity can also be set between the first input end NI1 of converter and the second input terminal NI2 Hold.In many occasions the processor 112 of the second equipment 102M configuration to directly drive ability weaker, possibly can not directly drive MOSFET or IGBT constant power switch, can enhance switch control signal using the stronger driver/buffer of driving capability Intensity drives the power switch S1-S4 of the second equipment 102M again.

Referring to Fig. 6, photovoltaic module PV_N generates desired output voltage using the second equipment 102N and is performed simultaneously maximum work Rate point tracking, the first input end NI1 of the second equipment 102N are connected to the second of photovoltaic module PV_N anode and the second equipment 102N Input terminal NI2 is connected to photovoltaic module PV_N cathode.The first output end NO1 of second equipment 102N is connected to the second equipment 102N Unique corresponding first node N1, it is unique that the second output terminal NO2 of the second equipment 102N is connected to the second equipment 102N itself A corresponding second node N2, in addition there are one output capacitance CO be connected the second equipment 102N first node N1 and Between second node N2.The voltage of photovoltaic module PV_N is executed power conversion and that is, synchronous execution maximum work by the second equipment 102N Rate tracking calculation, the DC output voltage that final second equipment 102N is exported generate the first output end in the second equipment 102N Between NO1 and second output terminal NO2, output voltage is applied on the output capacitance CO of the second equipment 102N.Second equipment 102N The power switch S1 and power switch S2 of reduction voltage circuit be connected on first input end NI1 and the second input terminal NI2 between the two, The power switch S3 and power switch S4 of the booster circuit of second equipment 102N are connected on the first output end NO1 and second output terminal Between NO2.Both power switch S1 and power switch S2 are connected in the first interconnecting nodes NX1, power switch S3 and power switch S4 The two is connected in the second interconnecting nodes NX2, both front side power switch S1-S2 connected the first interconnecting nodes NX1 and rear side function It is equipped with main inductance element LL between the second both rate switch S3-S4 connected interconnecting nodes NX2, second in the second equipment 102N Output end NO2 and the second input terminal NI2 may be coupled directly to the current potential for together and setting them as a reference potential REF2. Equally in the output capacitance CO institute being usually arranged between the first output end NO1 and second output terminal NO2 in the second equipment 102N Corresponding to be, the input capacitance between the first input end NI1 of the second equipment 102N and the second input terminal NI2 is also option. The ability that directly drives of the processor 112 of second equipment 102N may be weaker, it is possible to can not directly drive MOSFET or IGBT Constant power switch, the intensity that can be enhanced switch control signal using the stronger driver/buffer of driving capability are driven again The power switch S1-S4 of second equipment 102N.

Referring to Fig. 6, when the processor 112 of the second equipment 102N configuration receives carrier signal from power line LN: from it The induction type air core coil sensor that reason device 112 configures from power line LN for incuding carrier signal, and so-called processor The filter of 112 configurations is used to filter the clutter other than carrier signal, the processor then configured by the second equipment 102 again 112 receive scheduled carrier signal.As the means for receiving carrier signal, specifically: carrier sensor module 105 is for example felt Formula air core coil sensor strip is answered to have the air core coil as induction coil.It is respectively coupled to the second equipment in the present embodiment A pair of of power line of a pair of output terminals of 102N/output node N1-N2 or NO1-NO2 need in this embodiment also cross Air core coil.In Fig. 6, the power line LN that node N2 is coupled to for the second equipment 102N is electric relative to node N1 is coupled to Line of force LN passes back through air core coil: it is the equal of that the power line LN for making to be coupled to node N1 is required to pass through air core coil that it, which looks like, Part portions LN-1 in the sense of current that flows through and the power line LN for being coupled to node N2 pass through the local portion of air core coil Divide the sense of current flowed through in LN-2 identical.Such as we first assume that the node N1 of the second equipment 102N is relative to node N2 Positive potential, then bus DC current is flowed out from the first node N1 of the output of the second equipment 102N, then bus direct current It flows and is flowed into from the second node N2 of the output power of the second equipment 102N.It is coupled to the power line LN of node N1 and is coupled to node If the power line LN of N2 it is parallel side by side pass through air core coil, without allowing a bus therein to pass back through tubular wire Circle, then the power line LN for eventually leading to the power line LN for being coupled to node N1 and being coupled to node N2 respectively pass through air core coil The sense of current flowed through in Part portions is opposite., whereas if being coupled to the power line LN of node N1 and being coupled to node N2 Power line LN respectively pass through that the sense of current flowed through in the Part portions LN-1 and LN-1 of air core coil is identical then may be used The drawbacks of to avoid being mentioned above.It is coupled to the power line LN of node N1 and is coupled among both power line LN of node N2, One of power line passes back through induction coil with respect to another one, such as: electric current is the first segment from the output of the second equipment 102N Point N1 outflow, electric current are flowed into from the second node N2 of the output power of the second equipment 102N, are not influenced each but and are passed through sky The sense of current flowed through in the Part portions LN-1 and LN-1 of wire-core coil, the current direction in Part portions in coil are all The flow direction flowed outwardly from the second equipment 102N.

Referring to Fig. 6, as the side for sensing and decoding carrier signal: the carrier sense and decoding of the second equipment 102N configuration Part usually also has carrier sensor module 105 and filter module, and the second equipment 102N illustrated is also configured with class Data are handled like the control unit or processor 112 of MCU/DSP etc..It needs that power line LN is allowed to pass through carrier sensor module 105(such as induction type Roche air core coil sensor etc.) air core coil as sensing element that has, it whereby can be by carrier wave Sensor module 105 detects the carrier signal on power line LN, in order to more accurately capture true carrier data and shielding All kinds of incoherent noises, filter module again carry out further the carrier signal that carrier sensor module 105 senses Filtering, filters out those clutters not in designated frequency range, the carrier wave only in designated frequency range can just indicate pre- The true carrier signal of phase, so that control unit or processor 112 receive true carrier signal and decode its data information.Induction Formula air core coil sensor has included at least the cores such as induction coil and the low-noise amplifier of sensing unit, induction coil It is the key element for obtaining magnetic field signal and being converted into voltage signal, amplifier is then low in order to carry out faint voltage signal Noise amplification.The M and N that are mentioned above are greater than 1 natural number.

It in multi-level form and is concatenated if the second equipment 102M and the second equipment 102N is adjacent and connects referring to Fig. 6 In the concatenation relationship of second equipment 102, such as: the second node N2 of the second equipment 102M of previous stage is connected to the second of rear stage The first node N1 of equipment 102N.With reference to Fig. 4, the second multistage equipment 102-1 to 102-N is connected in series according to this rule, The second node N2 of second equipment 102M of any previous stage is coupled to the second equipment of adjacent rear stage by power line The first node N1 of 102N, or any previous stage the second equipment 102M output capacitance CO by power line and neighboring later stage The output capacitance CO of second equipment 102N connects.The rest may be inferred, finally in the series connection such as second multistage equipment 102-1 ... 102-N Their own output capacitance C when connection_OIt is connected in series with each other: namely the output capacitance CO and 102-2 of the second equipment 102-1 Output capacitance CO of output capacitance CO ... and 102-N of output capacitance CO and 102-3 etc. is connected in series by power line, then is connected A series of second equipment 102 provide total tandem voltage be equal to the second their own output of equipment 102-1 ... 102-N The superposition value of voltage on capacitor CO.In other words it can also be expected that the first node of the second equipment 102-1 of the first first order Entire concatenated multiple optimizations can be provided between the second node N2 of the second equipment 102-N of the last level-one at N1 and end Total tandem voltage of device.The first node N1 of second equipment 102-1 of the first first order is the equal of multistage second setting The second node N2 of second equipment 102-N of the last level-one of standby equivalent anode and end is the equal of the second of multistage The equivalent cathode of equipment, the LN1 in one group of power line are coupled to equivalent anode, and the LN2 in one group of power line is coupled to equivalent negative Pole.

Referring to Fig. 7, the first equipment 101 uses the example of striding capacitance inverter.It is shown in Figure 7, use switch number Adjustable single armed is measured, upper and lower arms switch is all K+1, which has extensive representative.Bridge arm SA_ thereon The first of the corresponding multi-electrical level inverter for having respectively constituted flying capacitor type of 1 to SA_K+1 and lower bridge arm SB_1 to SB_K+1 Group switch and second group of switch.Fig. 7 is using first group of multiple switch and second group of multiple switch as example and first and second Group switch is being turned off and is being led come control switch by the high-frequency pulsed width modulation signal/control signal for being coupled to the control terminal of switch Switch between logical.Actually first group and second group of number of switches is unrestricted, and the selection of being adapted to property is more as shown Or less number of switches and switch can be switched using IGBT, MOSFET or thyristor constant power.In Fig. 7, first group Some interconnecting nodes NA_K of a pair of switches SA_K and SA_K+1 of arbitrary neighborhood between the two and phase in second group of switch in switch It answers and is connected with striding capacitance C_K between some interconnecting nodes NB_K of a pair of of adjacent switch SB_K and SB_K+1 between the two, here K For natural number.Switch SA_K and SA_K+1 they with the relationship in corresponding a pair of switches SB_K and SB_K+1 be: first group In switch SA_K it is complementary with the switch SB_K in second group, the switch SB_K in switch SA_K+1 and second group in first group + 1 is complementary.And upper bridge arm SA_1 to SA_K+1 and lower bridge arm SB_1 to SB_K+1 are connected in the intermediate node NX introduced in figure That is arm point, quantity are that the switch of K+1 is respectively applied to upper and lower bridge arm.It is shown in Figure 7, the sequence of first group of switch in topology It is that first switch SA_1 from being coupled to input terminal RE1 is successively ordered into the switch SA_K for being connected to the end of intermediate node NX + 1, and opposite, in topology the sequence of second group of switch be then first switch SB_1 from being coupled to input terminal RE2 successively It is ordered into the switch SB_K+1 for being connected to the end of intermediate node NX.The voltage source that the second multistage equipment provides is from power line LN1- Input terminal RE1-RE2 is input between LN2, capacitor CIN is connected between this group of input terminal RE1-RE2, and is generated more Level alternating current exports from intermediate node NX, can also be in the intermediate node NX connection filter inductance LX of output power.First Group and second group of switch, which are typically considered, constitutes the single armed of multi-electrical level inverter, and multiple single armed combinations can be formed by multiphase Inverter.First equipment 101 other than it can use the above striding capacitance inverter, single-phase full bridge, recommend by single-phase semi-bridge Formula, three-phase bridge type converter etc. are also suitable.And the first equipment 101 filling of can function as charging a battery in many occasions Electric appliance, or even the first equipment 101 can also be made using header box when not needing to carry out power conversion, it is as just energy Measure collection device.

It is compared referring to Fig. 8 with the embodiment of Fig. 5, the embodiment of Fig. 5 can be directly one in parallel at the both ends of inductor L DC voltage source S and switch Q1, and an independent DC power supply VDD by first switch Q1 is connected to inductor in fig. 8 One end of L1.DC power supply VDD and first switch Q1 is used as the oscillator for issuing carrier signal, and carrier wave sends principle and reception Principle is consistent with Fig. 5.In optional but nonessential embodiment, the reference potential of DC power supply VDD is the ginseng of the first equipment 101 It examines at ground potential, such as input terminal RE2 as its ground reference.

It is compared referring to Fig. 9 with the embodiment of Fig. 5, the embodiment of Fig. 5 can be directly one in parallel at the both ends of inductor L DC voltage source S and switch Q1, and an independent DC power supply VSS by first switch Q1 is connected to inductor in fig. 8 One end of L1.DC power supply VSS and first switch Q1 is used as the oscillator for issuing carrier signal, and carrier wave sends principle and reception Principle is consistent with Fig. 5.In optional but nonessential embodiment, the reference potential of DC power supply VSS is the ginseng of the first equipment 101 Ground potential is examined, as being its ground reference at input terminal RE2.For the embodiment of Fig. 8 and Fig. 9 by comparison, we can have found Fig. 8 Middle DC power supply VDD can be the positive voltage higher than ground reference with respect to the ground reference of the first equipment 101, and Fig. 9 Middle DC power supply VSS can be the negative voltage lower than ground reference with respect to the ground reference of the first equipment 101, the meaning Refer to: generating a series of sequence of high frequency pulses of carrier signal either the switching of positive voltage VDD high frequency generate can also be with It is that negative voltage VSS high frequency switching generates.

Referring to being compared using the second equipment of single-stage as the embodiment of example for Figure 10 and Fig. 9, Figure 10 uses multistage The second equipment 102.Their own output capacitance C when being connected in series such as the second multistage equipment 102_OThe final company of being serially connected Connect: in view of output capacitance CO of the second equipment 102 at different levels etc. by power line be connected in series, then it is concatenated this etc. it is a series of Total tandem voltage for providing of the second equipment 102 be equal on the multistage their own output capacitance CO of the second equipment 102 The superposition value of voltage.In other words, it is also assumed that: in the second multistage equipment, as the first first order therein The first node N1 of two equipment 102-1 is the equal of the equivalent anode of the second multistage equipment of those of series connection, and end is most The second node N2 of second equipment 102-N of level-one afterwards is the equal of the equivalent cathode of the second multistage equipment, power line LN1 It is coupled to equivalent anode, power line LN2 is coupled to equivalent cathode.Series relationship about the second multistage equipment can also refer to The embodiment of Fig. 4.The first node N1 of 102: the second equipment of the second equipment of the single-stage of Fig. 9 is the equal of the equivalent of the second equipment The second node N2 of anode, the second equipment is the equal of the equivalent cathode of the second equipment, and power line LN1 is coupled to equivalent anode, Power line LN2 is coupled to equivalent cathode.

Referring to Figure 11, the second equipment 102 can not use induction type air core coil sensor to detect carrier wave, but utilize Coupling transformer PT come capture the first equipment 101 sending carrier signal.The primary side winding of coupling transformer PT is connected to certain At the first node N1 or second node N2 of one the second equipment 102.The primary side winding LP1 of substantial coupling transformer PT and Second equipment 102 series connection at different levels, is also distributed about on power line, only coupling transformer needs to be distributed in carrier wave recipient's Be disposed near power line namely on power line the distance relative to the first equipment closer to the second equipment coupling transformer. For example the primary side winding LP1 of coupling transformer PT can directly be connected the conduct rear stage of Fig. 6 in certain embodiments The second equipment 102N second node as the second equipment 102M of previous stage of first node N1 and adjacent thereto other Between N2, it is used as used in sensing carrier signal for the second equipment 102N and/or the second equipment 102M.The secondary of coupling transformer The first end of side winding LP2 and a signal, which generate, is connected with a coupled capacitor CP and primary side winding between node NRX The second end of LP2 is connected to the ground terminal GND of ground potential at a default node NL.Optionally by diode D's Cathode is connected to signal generation node NRX and anode is connected to ground terminal GND at default node NL, and as option It can also be generated in signal and connect an inductive reactance RS between node NRX and default node NL.The work of coupling transformer PT Mechanism is embodied in: the coupled capacitor CP isolated DC electricity used, when first switch Q1 high frequency switches the high frequency of generation carrier signal A series of high-frequency impulses can be coupled transformer PT and be coupled to primary side winding LP2 when pulse.Such as DC voltage VDD is injected Power line, which is equivalent to, gives capacitor CP charging when being turned into high level, should during since the coupling of coupled capacitor CP also can be into One step gets up the synchronous lifting of current potential that signal generates node NRX, using then the clamp of diode D is imitated when Schottky diode D It should be also possible that the current potential of signal generation node NRX increases rapidly, be preset to generate to generate to be greater than at node NRX in signal The voltage of reference voltage threshold VREF, both the positive terminal of comparator A and reverse side are respectively coupled to signal and generate node NRX and predetermined reference voltage threshold value REF, if it is more than so-called reference voltage threshold that signal, which generates the voltage at node NRX, VREF, then comparator A will export the output signal SIG of high level.And output signal SIG is conveyed to the second equipment 102 and matches The case where processor 112 of set can learn carrier signal.In contrast, once when carrier signal overturning is low level Namely DC voltage VDD is discharged from power line, then coupled capacitor CP can also be put by primary side winding LP2 and inductive reactance RS Electricity, the current potential for making aforementioned signal generate node NRX fall rapidly, until the actual potential at the node compares reference voltage threshold VREF is also low, then the logic state for the output signal SIG that the output end of comparator A generates, which overturns and synchronizes, is changing into low level, Same processor 112 is by receiving the case where output signal SIG can learn carrier signal, thus the height electricity for passing through comparator Flat output variation detecting sequence of high frequency pulses.

Referring to Figure 11, the second equipment 102 captured using coupling transformer PT the first equipment 101 sending carrier signal and Induction type air core coil sensor is not used to detect the first equipment 101 and issue carrier wave, same first equipment 101 can use coupling Transformer PT is closed to capture the carrier signal of the second equipment 102 sending without detecting the using induction type air core coil sensor Two equipment 102 issue carrier wave, and only position of the coupling transformer PT on power line needs to be moved closer to first Equipment 101, such as the primary side winding LP1 of coupling transformer PT are connected to two input resistance RE1-RE2 of the first equipment 101 and work as In one at, then recycle comparator A generate output signal SIG can be used for characterizing the first equipment 101 sending load The comparison result of wave signal notifies the processor 111 of the first equipment 101.

Referring to Figure 11, which compares with the embodiment of each circuit containing EMI above, and electromagnetic interface filter 210 is also into one Step includes DM(differential mode) inductance L1-L2 and/or CM(common mode) inductance L3-L4, DM inductance L2 and CM are disposed on power line LN1 It is disposed on inductance L4, power line LN2 in DM inductance L1 and CM inductance L3 and figure without specially completely identifying X capacitor and Y Capacitor.It is still illustrated by taking the DM inductance L2 on the power line LN1 being arranged in one group of power line as an example in this embodiment Bright: inductance L2, which has, to be coupled to the first end of the first equipment and is coupled to the second end of the second equipment, in some DC voltage source One of VDD and DM inductance L2 is equipped with the first switch Q1 for being controlled by processor 111 between terminal such as second end, then inverter The processor 111 of configuration sends the mode in carrier signal to power line LN1-LN2 are as follows: driving first switch Q1 is being connected and closed High-frequency impulse, actively and is periodically injected on power line LN by high frequency switching between disconnected from the Second terminal of DM inductance L2, It is equivalent to a carrier oscillator, the sequence of high frequency pulses for carrying data information injected on power line LN whereby is considered as load Wave signal.Assuming that others inductance L4 or L3 have the first end for being coupled to the first equipment and are coupled to the second of the second equipment End, in alternative embodiment, one of DC voltage source VDD and CM inductance L4 or L3 between terminal such as second end be equipped with by It controls the first switch Q1 in processor 111, first switch Q1 high frequency between turning on and off is driven to switch, it equally can also be That injects on power line LN carries the sequence of high frequency pulses of data information, that is to say, that DM/CM inductance is as electromagnetic interference EMI The active component of circuit can cooperate and oscillator is assisted to generate a series of sequence of high frequency pulses.

Referring to Figure 12, above substantially using the first equipment 101 as transmission data a side and the second equipment 102 as connecing The side for receiving data illustrates explanation as example, and substantially, the second equipment 102 can be used as the side and second for sending data Equipment 102 is as the side for receiving data.Such as: the output end of output power is used in the second equipment 102 close to every level-one Inductor LS is arranged on the power line of son namely the first and second node N1-N2, assumes the second equipment in the embodiment in conjunction with Fig. 6 102N is configured with inductor LS, and only inductor LS needs to be distributed near the power line of carrier wave sender namely power line On be disposed with the distance relative to the first equipment 101 closer to the second equipment 102N the inductor being used cooperatively with oscillator LS.For example: inductor LS is directly connected the first of the second equipment 102N as rear stage of Fig. 6 in certain embodiments Between node N1 and the second node N2 adjacent thereto as the second equipment 102M of previous stage, the first end of inductor LS ST1 is connected to the first node N1 of the second equipment 102N and the second end ST2 of inductor is then connected to the second of the second equipment 102M Node N2.One DC voltage source VEE is connected to the second end ST2 of inductor LS by second switch Q2.In any level-one Second equipment 102N is when sending carrier signal to energy collecting device namely the first equipment 101: what the second equipment 102N was configured It is periodical that processor 112 controls the second switch Q2 being coupled between a terminal ST2 of DC voltage source VEE and inductor LS Ground is turning on and off a high frequency switching, so that injection is by DC voltage source VEE by the period at the terminal ST2 of inductor LS Property access and release and a series of high-frequency impulses as carrier signal for causing, energy collecting device namely the first equipment 101 When the processor 111 of configuration receives carrier signal from power line: its induction type air core coil sensor configured is used for from electricity Carrier signal is incuded in the line of force, the filter of configuration is used to filter the clutter other than carrier signal, then by collection of energy The processor 111 of device configuration receives scheduled carrier signal.Energy collecting device namely the tubular wire of the first equipment 101 configuration The mode of coil sensor induction carrier signal further include: refer to Figure 12, be respectively coupled to a pair of input terminals of the first equipment 101 A pair of of power line LN1-LN2 of RE1-RE2 is also cross such as induction type air core coil sensor strip of carrier sensor module 105 One of LN1-LN2 passes back through tubular wire with respect to another one in some air core coil/induction coils and a pair of power line Circle, at least so that a pair of power line LN1-LN2 respectively passes through the sense of current phase flowed through in the Part portions of air core coil Together, this is similar with the scheme that Fig. 5 is disclosed.In an alternate embodiment of the invention, the electricity for the DC voltage source VEE that the second equipment 102N is used Position can be positive voltage or negative voltage, specifically reference potential of the DC voltage source VEE relative to the second equipment 102N REF can be positive or negative voltage, notice that the reference potential REF of the second equipment 102N here is substantially equal to the second equipment 102N Second node N2 at current potential.

Referring to Figure 12, above substantially using the first equipment 101 as transmission data a side and the second equipment 102 as connecing The side for receiving data illustrates explanation as example, and either, the second equipment 102 can be used as the side and second for sending data Equipment 102 is as the side for receiving data.Data can be mutually sent between substantial multiple second equipment 102 and receive number According to.The concatenated multistage of Fig. 4 the second equipment 102-1 into 102-N, in conjunction with Fig. 6, define first kind power optimization device for example the Two equipment 102N, and the second class power optimization device for example the second equipment 102M is defined, the second class power optimization device of setting, which receives, to be come The carrier signal sent from first kind power optimization device.Second equipment 102N to other power optimization devices such as to the second equipment When 102M sends carrier signal: the control of processor 112 of the second equipment 102N configuration is coupled in DC voltage source VEE and inductor Second switch Q2 between a terminal ST2 of LS is periodically turning on and off a high frequency switching, thus in inductor LS Terminal ST2 at injection periodically accessed by DC voltage source VEE and discharge and the system as carrier signal caused Column high-frequency impulse.The processor 112 of concatenated other second power optimization devices such as the second equipment 102M is received from power line When the carrier signal that the second equipment 102N is sent: the induction type air core coil sensor of the second equipment 102M configuration is from power line Incude carrier signal, the filter of the second equipment 102M configuration is used to filter the clutter other than carrier signal, be set by second The processor 112 of standby 102M configuration receives the scheduled carrier signal that first kind power optimization device issues.Such as with reference to Fig. 6: Such as induction type air core coil sensor strip of carrier sensor module 105 can be equipped with for the second equipment 102M to be had as induction coil Air core coil, be respectively coupled to a pair of of electric power of a pair of output terminals/node N1-N2 or NO1-NO2 of the second equipment 102M Line needs to be coupled to the power line of its node N2 for the second equipment 102M also cross air core coil in this embodiment LN passes back through air core coil relative to its node N1 power line LN is coupled to: being equivalent to and is coupled to the power line of node N1 and passes through The sense of current flowed through in the Part portions of air core coil passes through the part of air core coil with the power line for being coupled to node N2 The sense of current flowed through in part is identical.Second equipment 102M receives the mode base for the carrier signal that the second equipment 102N is sent It is consistent that the mode of carrier signal of the first equipment 101 transmission is received in sheet with the second equipment 102N in Fig. 6.

Above by the content of description and accompanying drawings, the exemplary embodiments of the specific structure of specific embodiment are given, on It states invention and proposes existing preferred embodiment, but these contents are not intended as limiting to.For a person skilled in the art, After reading above description, various changes and modifications undoubtedly be will be evident.Therefore, appended claims should be regarded as and cover Whole variations and modifications of true intention and range of the invention.The range of any and all equivalences in Claims scope With content, all it is considered as still belonging to the intent and scope of the invention.

Claims

1. a kind of device for realizing data transmission characterized by comprising

The first equipment with first processor；

The second equipment with second processor；

The power line for conveying power supply is connected between second equipment and the first equipment；

Be disposed on power line the distance relative to the second equipment closer to the first equipment the first inductor；

First switch is provided between the first DC voltage source and a terminal of first inductor；

First processor sends the mode in carrier signal to power line are as follows: driving first switch high frequency between turning on and off Switch the sequence of high frequency pulses for being considered as carrier signal that the injection whereby on the power line carries data information.

2. the device according to claim 1 for realizing data transmission, it is characterised in that:

First inductor is the inductor element for the electromagnetic interface filter being arranged on power line.

3. the device according to claim 1 for realizing data transmission, it is characterised in that:

First inductor, which has, to be coupled to the first terminal of the first equipment and is coupled to the Second terminal of the second equipment；

First DC voltage source is connected to the Second terminal of first inductor by the first switch, to ensure described first It is higher than first inductor to the path of the second equipment for the induction reactance of carrier signal on inductor to the path of the first equipment The upper induction reactance for carrier signal.

4. the device according to claim 1 for realizing data transmission, it is characterised in that:

Second processor receives the mode of carrier signal from power line are as follows: its induction type air core coil sensor configured For incuding carrier signal from power line, the carrier signal of capture is then received by second processor.

5. the device according to claim 4 for realizing data transmission, it is characterised in that:

Power supply, the mode of induction type air core coil sensor sensing carrier signal are conveyed on power line from the second equipment are as follows:

A pair of of power line of a pair of output terminals for output power of the second equipment is respectively coupled to also cross induction type The induction coil that air core coil sensor has；And

Limiting a pair of power line, respectively to pass through the sense of current flowed through in the Part portions of induction coil identical.

6. the device according to claim 1 for realizing data transmission, it is characterised in that:

First equipment includes header box or inverter, and the second equipment includes for photovoltaic module configuration for executing maximum power point The dc voltage changer of tracking.

7. the device according to claim 6 for realizing data transmission, it is characterised in that:

Multistage photovoltaic component string connection, which links together, constitutes a battery strings group；

Every level-one photovoltaic module is each equipped with the dc voltage changer for executing maximum power point tracking；And

Every level-one dc voltage changer is each equipped with for providing the output capacitance of itself output voltage；

Multistage dc voltage changer their own output capacitance series connection, multistage dc voltage changer when being serially connected The total voltage provided is as the power supply needed using power line conveying.

8. a kind of device for realizing data transmission characterized by comprising

The first equipment with first processor；

The second equipment with second processor；

Second equipment conveys power supply to the first equipment by the power line that it is connected between the first equipment；

Be disposed on power line the distance relative to the first equipment closer to the second equipment the second inductor；

Second switch is provided between the second DC voltage source and a terminal of second inductor；

Second processor sends the mode in carrier signal to power line are as follows: driving second switch high frequency between turning on and off Switch the sequence of high frequency pulses for being considered as carrier signal that the injection whereby on the power line carries data information.

9. the device according to claim 8 for realizing data transmission, it is characterised in that:

Multistage the second equipment for providing power supply is connected in series；

Second equipment of every level-one is used to execute maximum power point tracking to the photovoltaic module matched with it；

Second equipment of every level-one includes providing the first and second output ends of output power；

The second multistage equipment when being serially connected the second output terminal of the second equipment of any previous stage be coupled to neighboring later stage The second equipment the first output end.

10. the device according to claim 9 for realizing data transmission, it is characterised in that:

Second inductor that second equipment of the level-one being arbitrarily designated is equipped with is coupled in its first output end and previous stage The second equipment second output terminal between；Or

Second inductor that second equipment of the level-one being arbitrarily designated is equipped with is coupled in its second output terminal and rear stage The second equipment the first output end between；

Second inductor be coupled to the specified level-one the second equipment be equipped with first terminal and have be coupled to The Second terminal of previous stage or the second equipment of rear stage；

Second DC voltage source is connected to the Second terminal of second inductor by the second switch.

11. the device according to claim 8 for realizing data transmission, it is characterised in that:

12. the device according to claim 11 for realizing data transmission, it is characterised in that:

The mode for the induction type air core coil sensor sensing carrier signal that second processor is equipped with are as follows:

A pair of of the power line for being respectively coupled to a pair of of voltage input end of the second equipment is sensed also cross induction type air core coil The induction coil that device has；And

13. a kind of method for realizing data transmission, it is characterised in that:

It is connected with the power line for conveying power supply between first equipment and the second equipment, is disposed on power line relative to second The distance of equipment closer to the first equipment the first inductor, in the first, second equipment for being respectively provided with the first, second processor Between realize data transmission method include:

The first processor driving of first equipment be coupled in the first DC voltage source and first inductor a terminal it Between first switch between turning on and off high frequency switch, whereby at the terminal of first inductor apply by first The first kind sequence of high frequency pulses that DC voltage source is caused by intermittent access and release, that injects on power line carries A series of first kind sequence of high frequency pulses of data information are used as carrier signal.

14. according to the method for claim 13, it is characterised in that:

Second processor captures the mode of the carrier signal of the first equipment sending from power line are as follows: its induction type configured Air core coil sensor receives the carrier signal sensed for incuding carrier signal from power line, by second processor；

The mode for the induction type air core coil sensor sensing carrier signal that second processor is equipped with further include:

15. according to the method for claim 13, it is characterised in that:

There also is provided on power line the distance relative to the first equipment closer to the second equipment the second inductor；

The method of data transmission is realized between the first, second equipment further include:

The second processor driving of second equipment be coupled in the second DC voltage source and second inductor a terminal it Between second switch between turning on and off high frequency switch, whereby at the terminal of second inductor apply by second The second class sequence of high frequency pulses that DC voltage source is caused by intermittent access and release, that injects on power line carries A series of second class sequence of high frequency pulses of data information are used as carrier signal.

16. according to the method for claim 15, it is characterised in that:

First processor captures the mode of the carrier signal of the second equipment sending from power line are as follows: its induction type configured Air core coil sensor receives the carrier signal sensed for incuding carrier signal from power line, by first processor；

The mode for the induction type air core coil sensor sensing carrier signal that first processor is equipped with further include:

A pair of of power line of a pair of input terminals for receiving power supply of the first equipment is respectively coupled to also cross induction type The induction coil that air core coil sensor has；And