CN105322638A - Photovoltaic system energy output method and photovoltaic power supply system - Google Patents
Photovoltaic system energy output method and photovoltaic power supply system Download PDFInfo
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- CN105322638A CN105322638A CN201410368429.6A CN201410368429A CN105322638A CN 105322638 A CN105322638 A CN 105322638A CN 201410368429 A CN201410368429 A CN 201410368429A CN 105322638 A CN105322638 A CN 105322638A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
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Abstract
The invention discloses a photovoltaic energy output method which is suitable for an off-grid photovoltaic power generation system. The system uses city power and the off-grid photovoltaic power generation system to power a load, and detects the load and the photovoltaic power generation system. When the output of the photovoltaic power generation system is greater than or equal to the load, the photovoltaic power generation system is used alone to power the load. When the output of the photovoltaic power generation system is less than the load and is greater than a set value, city power and the photovoltaic power generation system are used together to power the load. A current-sharing system is used to realize city power compensation power supply. When the output of the photovoltaic power generation system is less than the set value, city power is used alone to power the load. According to the invention, photovoltaic energy is fully used and is not wasted in vain; if photovoltaics is completely unavailable or completely unnecessary for compensation, energy compensation is cut off; a battery inverter work mode or a city power bypass mode is used; and unnecessary energy waste is avoided.
Description
Technical field
The present invention relates to field of solar energy, particularly a kind of photovoltaic system energy output method and photovoltaic power supply system.
Background technology
Photovoltaic generation, English words Photovoltaicpowergeneration.Theoretically, photovoltaic power generation technology may be used for any occasion needing power supply, on to spacecraft, down to domestic power supply, large to MW class power station, little of toy, photo-voltaic power supply is ubiquitous.The most primary element of solar energy power generating is solar cell (sheet), has monocrystalline silicon, polysilicon, amorphous silicon and hull cell etc.Wherein, single-crystalline and polycrystalline cell consumption is maximum, and amorphous battery is used for some mini systems and calculator accessory power supply etc.Polycrystal silicon cell efficiency about 16% to 17%, the efficiency about 18% to 20% of monocrystalline silicon battery.Photovoltaic module is made up of one or more solar battery sheet.
Photovoltaic generating system is divided into angle of solar battery system and grid-connected photovoltaic system.Wherein independent photovoltaic generating is also named from net photovoltaic generation.Primarily of solar module, controller, storage battery composition, to power for AC load, also need to configure AC inverter.Stand-alone PV power station comprises backwoodsman village electric power system, solar energy Home Power System, communication and signal power supply, cathodic protection, solar street light etc. various with storage battery can the photovoltaic generating system of independent operating.
At present, normally from net photovoltaic generating system be AC load power time, the inverter course of work is: when solar panel has electricity to come, it is in photovoltaic inversion work pattern.When load is excessive, or solar panel pass the energy of coming too small be not enough to band dynamic load time, it can forward battery inverter mode to, when after batteries ran out of energy, its can forward to civil power bypass mode run.The normal operating conditions of common scheme that Here it is.As shown in Figure 1, when the energy shortage that solar panel transforms, will transfer to other local power supply and use, the energy that solar panel transforms will be mended and slattern completely.After adding photovoltaic energy compensation equipment, its mode of operation will change.
Summary of the invention
The object of the invention is to propose a kind of photovoltaic power supply system, the mode of energy compensating is adopted in this electric power system, photovoltaic system can for load independently-powered time, be separately load supplying by photovoltaic system, when photovoltaic system deficiency thinks load supplying, exporting jointly by current-equalizing system by city's electronic compensating is load supplying.
Technical scheme of the present invention is: a kind of photovoltaic energy output intent, and the method is adapted to from net photovoltaic generating system, and this system adopts civil power and is load supplying jointly from net photovoltaic generating system, and its control procedure comprises the following steps:
Load and photovoltaic generating system are detected:
When the output of photovoltaic generating system is greater than or equal to load, photovoltaic generating system is adopted to be separately load supplying;
When the output of photovoltaic generating system is less than load and is greater than set point, adopt photovoltaic generating system and civil power to be load supplying jointly, realizing city's electronic compensating by current-equalizing system powers;
When the output of photovoltaic generating system is less than set point, be that load is powered separately by civil power.
When load is AC load, access photovoltaic off-grid inverter, when city's electronic compensating is powered, first carries out being rectified into direct current and is input to photovoltaic off-grid inverter DC bus one end, when civil power is powered separately, be directly pulled into the ac input end of load.
In photovoltaic energy input method of the present invention, photovoltaic system can for load independently-powered time, be separately load supplying by photovoltaic system, when photovoltaic system deficiency thinks load supplying, exporting common by current-equalizing system by city's electronic compensating is load supplying.The energy of photovoltaic will be used so fully, make it can not by slatterning in vain.When judge photovoltaic completely not or be in do not compensate necessity completely when, will energy compensating be cut off, make it be operated in battery inverter mode, or civil power bypass mode.Avoid unnecessary energy dissipation.
The present invention also provides a kind of photovoltaic power supply system, comprise solar panel, MPPT module, described solar panel is load supplying by described MPPT module, also comprise photovoltaic energy compensating unit, described photovoltaic energy compensating unit is arranged between MPPT module and load, when described solar panel is not enough to provide load institute energy requirement, supplements after utilizing commercial power rectification and export.
In this electric power system, photovoltaic energy compensating unit is crucial, and preferred photovoltaic energy compensating unit comprises: input EMI circuit, passive PFC circuit, DC/DC circuit, current rectifying and wave filtering circuit, output EMI circuit, sharing control unit;
Described input EMI circuit input end connects civil power, export the ac input end of the passive PFC circuit described in termination, the DC output end of described passive PFC circuit connects the input of described DC/DC circuit, the sharing control signal output part of the sharing control unit described in control inputs termination of described DC/DC circuit, described DC/DC circuit exports the input of the current rectifying and wave filtering circuit described in direct current termination, the input of the output EMI circuit described in output termination of described current rectifying and wave filtering circuit, the output terminating load of described output EMI circuit.Also comprise protecting control module, input detecting circuit, output detection circuit, temperature-detecting device; the control signal input of described protecting control module connects the output of described input detecting circuit, output detection circuit and temperature-detecting device respectively, described protecting control module signal output part connect the control input end of described DC/DC circuit.Also comprise remote monitoring module, host computer is connected with described sharing control unit and protecting control module communication by described remote monitoring module.When civil power is three-phase mains, described passive PFC circuit is three-phase passive PFC circuit.Load is AC load, between described load and described photovoltaic energy compensating unit, also comprise photovoltaic off-grid inverter.
Employ the flow equalize technology of comparative maturity in native system, realize solar panel deficiency when thinking load supplying, utilize civil power to supplement.
Below in conjunction with specific embodiment, the present invention is described in more detail.
Accompanying drawing explanation
Fig. 1 is from net photovoltaic power supply system block diagram in prior art.
Fig. 2 is the embodiment of the present invention 1 structure chart.
Fig. 3 is the photovoltaic energy compensating unit structure chart of the embodiment of the present invention 1.
Embodiment
Embodiment 1, the present embodiment is a kind of photovoltaic energy output intent that can make full use of solar cell power generation, and the method utilizes civil power to be supplementary, powers to AC load by after solar cell and civil power current-sharing, uses the electric power system of the method as shown in Figure 2.
The photovoltaic energy output intent of the present embodiment is adapted to from net photovoltaic generating system, and this system adopts civil power and is load supplying jointly from net photovoltaic generating system, and its control procedure comprises the following steps:
Load and photovoltaic generating system are detected:
When the output of photovoltaic generating system is greater than or equal to load, photovoltaic generating system is adopted to be separately load supplying.
When the output of photovoltaic generating system is less than load and is greater than set point, adopt photovoltaic generating system and civil power to be load supplying jointly, realize city's electronic compensating by current-equalizing system and power.
When the output of photovoltaic generating system is less than set point, be that load is powered separately by civil power.
When load is AC load, access photovoltaic off-grid inverter, when city's electronic compensating is powered, first carries out being rectified into direct current and is input to photovoltaic off-grid inverter DC bus one end, when civil power is powered separately, be directly pulled into the ac input end of load.
A kind of photovoltaic power supply system that the present embodiment adopts as shown in Figure 2, comprise solar panel, MPPT module, solar panel is load supplying by described MPPT module, also comprise photovoltaic energy compensating unit, photovoltaic energy compensating unit is arranged between MPPT module and load, when solar panel is not enough to provide load institute energy requirement, supplements after utilizing commercial power rectification and export.
MPPT module, also claiming full name " MPPT maximum power point tracking " (MaximumPowerPointTracking) controller for solar of MPPT controller, is the upgraded product of traditional solar charging/discharging controller.So-called MPPT maximum power point tracking, namely refers to that controller can the generating voltage of detecting real-time solar panels, and follows the trail of ceiling voltage current value (VI), make system with the highest efficiency to load supplying.
The photovoltaic energy compensating unit that the present embodiment adopts comprises as shown in Figure 3: input EMI circuit, passive PFC circuit, DC/DC circuit, current rectifying and wave filtering circuit, output EMI circuit, sharing control unit, protecting control module, input detecting circuit, output detection circuit, temperature-detecting device and remote monitoring module; Input EMI circuit input end connects civil power, export the ac input end of termination passive PFC circuit, the DC output end of passive PFC circuit connects the input of DC/DC circuit, the sharing control signal output part of the control inputs termination sharing control unit of DC/DC circuit, DC/DC circuit exports the input of direct current termination current rectifying and wave filtering circuit, the input of the output EMI circuit described in output termination of current rectifying and wave filtering circuit, exports the output terminating load of EMI circuit.The control signal input of protecting control module connects the output of described input detecting circuit, output detection circuit and temperature-detecting device respectively, described protecting control module signal output part connect the control input end of described DC/DC circuit.Host computer is connected with sharing control unit and protecting control module communication by remote monitoring module.
The sharing control unit that the present embodiment adopts adopts the flow equalize technology of technology maturation in this area, sharing control unit so is at present many especially, very many on UPS, current current-sharing control method has mainly contained three kinds, namely without line parallel droop control method, instantaneous Average Current Control method and active power reactive power control method.See the article << parallel UPS system sharing control >> on << Proceedings of the CSEE >> the 28th volume the 21st phase of publishing on July 25th, 2008.
As shown in Figure 3, photovoltaic energy compensating unit mainly comprises a charging module, and charging module is made up of passive PFC and DC/DC of three-phase two power stage cascades.Prime three-phase passive PFC circuit comprises input EMI and standard.The DC/DC circuit of rear class comprises DC/DC converter and control circuit, the passive PFC composition of output rectification filter, in order to realize exchanging the rectifying and wave-filtering of input and the correction of input current, make the PF>0.92 of input circuit, to meet in DL/T781-2001 the relevant part such as EMI, EMC, output EMI composition in three phase harmonic standard and GB/T17799.2-2003, export in order to the DC voltage-stabilizing realizing prime commutating voltage to convert to electric power operation system requirements.Outside two power stages, also have accessory power supply and input and output to detect protective circuit.Accessory power supply before DC/DC converter, utilizes the direct current of the passive PFC of input to export, produces each road power supply needed for control circuit after the passive PFC of input.Input detecting circuit realizes detection such as input overvoltage/undervoltage, phase shortage etc., and the detection protective circuit of DC/DC comprises the detection of output voltage electric current, the detection etc. of radiator temperature.All these signals are in order to the control and protection of DC/DC.The check processing of module monitors in order to internal signal and the communication with monitoring unit.
During the MPPT output unit parallel operation of charging module above and solar cell, digital current-sharing control technology is adopted to make the equal mobility of each module within 3%.Adopt CAN communication mode to obtain the current value of all parallel modules by monitoring module, then calculate average current by software, more each blocks current and average current, adjust each module voltage according to comparative result, make its electric current equal with average current.
When charging module is above in parallel with the MPPT of solar cell charge a battery time, if the MPPT output voltage of solar cell is in set point, then charging module is automatically turned down output voltage and is preferentially charged by the MPPT of solar cell, when charging module detects the output voltage low-pressure settings of the MPPT of solar cell, then by regulating the duty ratio of PWM to be raised by the output voltage of charging module, the power output compensating MPPT is not enough.
Claims (8)
1. a photovoltaic energy output intent, the method is adapted to, from net photovoltaic generating system, it is characterized in that: this system adopts civil power and is load supplying jointly from net photovoltaic generating system, and its control procedure comprises the following steps:
Load and photovoltaic generating system are detected:
When the output of photovoltaic generating system is greater than or equal to load, photovoltaic generating system is adopted to be separately load supplying;
When the output of photovoltaic generating system is less than load and is greater than set point, adopt photovoltaic generating system and civil power to be load supplying jointly, realizing city's electronic compensating by current-equalizing system powers;
When the output of photovoltaic generating system is less than set point, be that load is powered separately by civil power.
2. photovoltaic energy output intent according to claim 1, it is characterized in that: when described load is AC load, access photovoltaic off-grid inverter, when city's electronic compensating is powered, first carry out being rectified into direct current and be input to photovoltaic off-grid inverter DC bus one end, when civil power is powered separately, be directly pulled into the ac input end of load.
3. a photovoltaic power supply system, comprise solar panel, MPPT module, described solar panel is load supplying by described MPPT module, it is characterized in that: also comprise photovoltaic energy compensating unit, described photovoltaic energy compensating unit is arranged between MPPT module and load, when described solar panel is not enough to provide load institute energy requirement, supplements after utilizing commercial power rectification and export.
4. photovoltaic power supply system according to claim 3, is characterized in that: described photovoltaic energy compensating unit comprises: input EMI circuit, passive PFC circuit, DC/DC circuit, current rectifying and wave filtering circuit, output EMI circuit, sharing control unit;
Described input EMI circuit input end connects civil power, export the ac input end of the passive PFC circuit described in termination, the DC output end of described passive PFC circuit connects the input of described DC/DC circuit, the sharing control signal output part of the sharing control unit described in control inputs termination of described DC/DC circuit, described DC/DC circuit exports the input of the current rectifying and wave filtering circuit described in direct current termination, the input of the output EMI circuit described in output termination of described current rectifying and wave filtering circuit, the output terminating load of described output EMI circuit.
5. photovoltaic power supply system according to claim 4; it is characterized in that: also comprise protecting control module, input detecting circuit, output detection circuit, temperature-detecting device; the control signal input of described protecting control module connects the output of described input detecting circuit, output detection circuit and temperature-detecting device respectively, described protecting control module signal output part connect the control input end of described DC/DC circuit.
6. photovoltaic power supply system according to claim 5, is characterized in that: also comprise remote monitoring module, and host computer is connected with described sharing control unit and protecting control module communication by described remote monitoring module.
7. photovoltaic power supply system according to claim 5, is characterized in that: described civil power is three-phase mains, and described passive PFC circuit is three-phase passive PFC circuit.
8., according to described photovoltaic power supply system arbitrary in claim 3 to 7, it is characterized in that: described load is AC load, between described load and described photovoltaic energy compensating unit, also comprise photovoltaic off-grid inverter.
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| CN201410368429.6A CN105322638A (en) | 2014-07-30 | 2014-07-30 | Photovoltaic system energy output method and photovoltaic power supply system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890178A (en) * | 2017-11-02 | 2018-04-10 | 江苏燕山光伏设备有限公司 | A kind of solar energy multifunctional charging case and bag |
| CN109861380A (en) * | 2019-02-28 | 2019-06-07 | 苏州浪潮智能科技有限公司 | DC load power supply system, method, apparatus and computer readable storage medium |
| CN110970928A (en) * | 2019-12-16 | 2020-04-07 | 广东欣顿电源科技有限公司 | Energy storage off-grid inverter with photovoltaic and commercial power simultaneously complementarily powered and control method |
| CN111082507A (en) * | 2019-12-27 | 2020-04-28 | 北京双登慧峰聚能科技有限公司 | Hybrid power supply system and hybrid power supply method for 5G base station |
| CN112366696A (en) * | 2020-10-30 | 2021-02-12 | 浙江佳乐科仪股份有限公司 | Self-coordinated multi-element power supply system and frequency converter thereof |
| CN113541020A (en) * | 2021-08-04 | 2021-10-22 | 深圳索瑞德电子有限公司 | Power supply system with energy-storage-free photovoltaic off-grid inverter |
| CN113659693A (en) * | 2021-07-26 | 2021-11-16 | 东莞市嘉达磁电制品有限公司 | Automatic tasting type photoelectric commercial power automatic compensation system, equipment and method |
| CN114719324A (en) * | 2022-04-18 | 2022-07-08 | 通辽市海龙新能源科技有限公司 | Electro-photovoltaic heating system |
| CN114878020A (en) * | 2022-05-09 | 2022-08-09 | 湖北鑫英泰***技术股份有限公司 | Passive temperature measurement system based on photovoltaic power generation |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007228661A (en) * | 2006-02-21 | 2007-09-06 | Toshiba Mitsubishi-Electric Industrial System Corp | Uninterruptible power supply |
| CN201839208U (en) * | 2010-10-20 | 2011-05-18 | 苟迎娟 | PFC/PWM two-in-one switching power supply circuit |
| CN202405863U (en) * | 2011-12-30 | 2012-08-29 | 上海追日电气有限公司 | Hybrid inverter |
| CN103178549A (en) * | 2013-04-21 | 2013-06-26 | 胥明军 | Control system and control method for photovoltaic auxiliary grid-connected power generation |
| CN103441566A (en) * | 2013-09-12 | 2013-12-11 | 重庆大学 | System and method for supplying power cooperatively by mains supply, photovoltaic cell and energy storage battery |
-
2014
- 2014-07-30 CN CN201410368429.6A patent/CN105322638A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007228661A (en) * | 2006-02-21 | 2007-09-06 | Toshiba Mitsubishi-Electric Industrial System Corp | Uninterruptible power supply |
| CN201839208U (en) * | 2010-10-20 | 2011-05-18 | 苟迎娟 | PFC/PWM two-in-one switching power supply circuit |
| CN202405863U (en) * | 2011-12-30 | 2012-08-29 | 上海追日电气有限公司 | Hybrid inverter |
| CN103178549A (en) * | 2013-04-21 | 2013-06-26 | 胥明军 | Control system and control method for photovoltaic auxiliary grid-connected power generation |
| CN103441566A (en) * | 2013-09-12 | 2013-12-11 | 重庆大学 | System and method for supplying power cooperatively by mains supply, photovoltaic cell and energy storage battery |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107890178A (en) * | 2017-11-02 | 2018-04-10 | 江苏燕山光伏设备有限公司 | A kind of solar energy multifunctional charging case and bag |
| CN109861380A (en) * | 2019-02-28 | 2019-06-07 | 苏州浪潮智能科技有限公司 | DC load power supply system, method, apparatus and computer readable storage medium |
| CN110970928A (en) * | 2019-12-16 | 2020-04-07 | 广东欣顿电源科技有限公司 | Energy storage off-grid inverter with photovoltaic and commercial power simultaneously complementarily powered and control method |
| CN111082507A (en) * | 2019-12-27 | 2020-04-28 | 北京双登慧峰聚能科技有限公司 | Hybrid power supply system and hybrid power supply method for 5G base station |
| CN111082507B (en) * | 2019-12-27 | 2022-03-22 | 北京双登慧峰聚能科技有限公司 | Hybrid power supply method for 5G base station |
| CN112366696A (en) * | 2020-10-30 | 2021-02-12 | 浙江佳乐科仪股份有限公司 | Self-coordinated multi-element power supply system and frequency converter thereof |
| CN113659693A (en) * | 2021-07-26 | 2021-11-16 | 东莞市嘉达磁电制品有限公司 | Automatic tasting type photoelectric commercial power automatic compensation system, equipment and method |
| CN113541020A (en) * | 2021-08-04 | 2021-10-22 | 深圳索瑞德电子有限公司 | Power supply system with energy-storage-free photovoltaic off-grid inverter |
| CN113541020B (en) * | 2021-08-04 | 2024-05-10 | 深圳索瑞德电子有限公司 | Power supply system with energy-storage-free photovoltaic off-grid inverter |
| CN114719324A (en) * | 2022-04-18 | 2022-07-08 | 通辽市海龙新能源科技有限公司 | Electro-photovoltaic heating system |
| CN114878020A (en) * | 2022-05-09 | 2022-08-09 | 湖北鑫英泰***技术股份有限公司 | Passive temperature measurement system based on photovoltaic power generation |
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Application publication date: 20160210 |