CN105939110A - DC chopper device with multi-path input processing ability - Google Patents
DC chopper device with multi-path input processing ability Download PDFInfo
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- CN105939110A CN105939110A CN201610356265.4A CN201610356265A CN105939110A CN 105939110 A CN105939110 A CN 105939110A CN 201610356265 A CN201610356265 A CN 201610356265A CN 105939110 A CN105939110 A CN 105939110A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
-
- 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
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a DC chopper device with multi-path input processing ability. The DC chopper device is formed by connecting a main circuit and a drive signal system in series, wherein the main circuit is a main body of the scheme; the drive signal system is used for ensuring that the main circuit works according to a design mode. An active multi-path input selection controller comprises n paths of input selection controllers which are connected in parallel; each path of input selection controller comprises an input voltage source, an input capacitor, an input control switch and an input isolation diode; and the drive signal system is a conventional pulse driving circuit comprising a single chip microcomputer and a switch tube drive chip. By the multiple paths of input selection controllers, simultaneous input of multiple paths of power supplies with different amplitude values is achieved; single-path energy output is achieved by a lifting voltage regulator circuit; electric energy of multiple power generation devices with different output voltage is integrated into one path of stable DC output; the cost of a solar power generation system and a wind power generation system can be effectively reduced; and the solar energy and wind energy utilization flexibility is improved.
Description
Technical field
The invention belongs to electric and electronic technical field, be specifically related to a kind of DC chopped-wave device with multichannel input processing ability.
Background technology:
The background technology relevant to this technology has two kinds, and one is the DC Switching Converter allowing the input of a kind of voltage, and two is more than one different voltages to be inputted the stagewise solution converted needing.
DC Switching Converter, also known as DC-DC Switching Power Supply, is ripe voltage switch technology.The type equipment constantly changes the duty of circuit by the speed-sensitive switch of electrical switch, control under different conditions energy storage and relative scale release time of electric capacity and inductance in circuit, and utilize the electrical characteristic of inductance suppression current break, circuit output characteristics can be made to be controlled, thus realize the adjustment of voltage.One the type equipment allows to be adjusted a road voltage source input, and provides a road output voltage.When there is multiple different input, circuit cisco unity malfunction, and be likely to result in input power and damage.
The existing solution that the one above voltage in road is converted simultaneously and managed is stagewise Adjusted Option.Stagewise scheme be each input voltage source distribute a DC-DC Switching Power Supply, and regulate its output characteristics make each power supply output meet condition used in parallel.The multiple Switching Power Supplies meeting condition in parallel also can use or export to energy storage device under parallel connection by alliance next stage Voltage Cortrol equipment, then by energy storage device output energy for next stage Voltage Cortrol equipment.Although this method has the stronger suitability, it is possible to the problem solving substantial amounts of polymorphic type energy input, however it is necessary that substantial amounts of various DC equipment, cause equipment cost too high, and number of devices is many can improve overall failure rate；Further, the conversion plan of classification can make a large amount of energy expenditure consume in equipment at different levels, causes overall efficiency relatively low.
Summary of the invention
It is an object of the invention to provide a kind of DC chopped-wave device with multichannel input processing ability that multiple different voltage sources directly process simultaneously, realize voltage transformation output.
The DC chopped-wave device with multichannel input processing ability that the present invention provides is by main circuit and drives signaling system two parts to be composed in series；Main circuit is scheme main body, drives signaling system in order to ensure that main circuit works according to design.
Main circuit is made up of active multichannel input selection control and Buck-Boost rising-falling tone volt circuit two parts；As it is shown in figure 1, left dotted box portion corresponding active multichannel input selection control, right dotted box portion correspondence Buck-Boost rising-falling tone volt circuit.
Active multichannel input selection control is made up of n road (n is the integer more than or equal to 1) input selection control in parallel；Input selection control in each road is controlled to switch and input isolating diode formed by input voltage source, input capacitance, input；Control switch and input isolating diode composition series circuit with input after input voltage source is in parallel with input capacitance；Active multichannel input selection control by input control switch to select input voltage source, input control switch by drive signaling system control；Drive the general pulse drive circuit that signaling system is made up of single-chip microcomputer and switching tube driving chip, control switch control terminal by n+1 root wire with each input and be connected (a remaining wire is common signal return wire)
Further, input voltage source is monocrystaline silicon solar cell assembly, polycrystalline silicon solar assembly or wind-driven generator.
Buck-Boost rising-falling tone volt circuit be by warm to typical Buck circuit and typical Boost circuit to together with the circuit of atypical structure；Buck-Boost rising-falling tone volt circuit is made up of blood pressure lowering adjustment switch 9, blood pressure lowering fly-wheel diode 10, adjustment inductance 11, boosting adjustment switch 12, boosting fly-wheel diode 13, output filter capacitor 14, and parts 15 are to load；After blood pressure lowering adjusts switch 9 series connection adjustment inductance 11, then series boosting fly-wheel diode 13；Blood pressure lowering fly-wheel diode 10 negative pole is connected on blood pressure lowering and adjusts switch 9 and adjust inductance 11 junction, and its positive pole is connected on the negative terminal of input voltage source；Boosting adjusts the junction that switch 12 one end are connected to adjust inductance 11 with boosting fly-wheel diode 13, and the other end is connected to input voltage source negative terminal, and load 15 is connected to boost between fly-wheel diode 13 negative pole and input voltage source negative terminal；Boosting adjusts switch 12 and adjusts the duty of switch 9 by driving signaling system control with blood pressure lowering；Under driving signaling system to control, holding boosting adjusts switch 12 and is off, and ON time and the frequency of regulation blood pressure lowering adjustment switch 9 can make Buck-Boost rising-falling tone volt circuit be in decompression mode, i.e. typical Buck reduction voltage circuit；Under driving signaling system to control, it is in the conduction state that holding blood pressure lowering adjusts switch 9, and ON time and the frequency of regulation boosting adjustment switch 12 can make Buck-Boost rising-falling tone volt circuit be in boost mode, i.e. typical boost circuit.This both of which freely can be switched by driving signaling system to control it, makes main circuit multichannel input voltage reduce or raises, to meet the requirement of main circuit output voltage.
In each working cycle when circuit works, Buck-Boost rising-falling tone volt circuit can turn on corresponding buck within the regular hour according to the control signal driving signaling system and adjust switch, the input of each road controls switch wheel conductance and leads to, the input voltage source on Shi Ge road is respectively as the voltage source of rising-falling tone volt circuit, thus realizes multivoltage source and work in coordination with and export to same equipment.Drive the control signal of signaling system be frequency 20～100Khz, amplitude be the pulsewidth modulation square wave of 15～20V.Isolating diode connects after corresponding input controls switch, for insulating power supply, prevents input switch from occurring the accident of electric current backflow telegram in reply potential source in the case of conducting.
Input capacitance, when corresponding input control switches off, can accept the charging of input voltage source；And when corresponding input controls switch conduction, corresponding input capacitance is powered to Buck-Boost rising-falling tone volt circuit jointly with corresponding input voltage source, provide bigger instantaneous power, thus ensure that the output voltage inputting selection control is the most stable, it is to avoid it acutely declines.
The oscillogram of the control signal turned on and close is provided the most as shown in Figure 2 and Figure 3 to switch each in said apparatus.When Buck-Boost rising-falling tone volt circuit is in boost mode, blood pressure lowering adjusts switch 9 and is in normally on；When Buck-Boost rising-falling tone volt circuit is in decompression mode, boosting adjusts switch 12 and is in the state that normal off is opened, so being not drawn into the driving signal of the constant switch of state in Fig. 2 with Fig. 3.
The control signal system being in boost mode works, as shown in Figure 2 in the following manner:
1, in a working cycle T, it is general pulsewidth modulation square wave (PWM) that boosting adjusts the driving signal (signal 20) of switch 12；
2, in the boosting in a working cycle T adjusts switch 12 service time Ton, the input of each road controls switch (5,6,18) and sequentially turns on (signal 21, signal 22), does not appoint the input of two-way to control switch and turns in the same time；
3, in the boosting in a working cycle T adjusts 12 non-service times of switch, in order to maintain booster circuit characteristic, have and an only road input selector switch (signal 23) in the conduction state.
The control signal system being in decompression mode works, as shown in Figure 3 in the following manner:
1, in a working cycle T, it is general pulsewidth modulation square wave (PWM) that blood pressure lowering adjusts the driving signal (signal 24) of switch 9；
2, in the blood pressure lowering in a working cycle T adjusts switch 9 service time Ton, the input of each road controls switch (5,6,18) and sequentially turns on (signal 25, signal 26), does not appoint the input of two-way to control switch and turns in the same time；
3, in the boosting in a working cycle T adjusts 12 non-service times of switch, a road input selector switch can be had in the conduction state, it is also possible to be off (signal 27) by all input selector switches.
Advantages of the present invention is as follows:
1. the drive scheme of the effectively work of the main circuit of the present invention, is to realize with independent control signal system.The input making main circuit controls switch and buck adjusts switching programme, clear logic, is quick on the draw, and reduces and the multiple electric energy that there is amplitude difference is unified storage and utilizes the cost of time.
2. the main circuit of the present invention uses isolating diode to make input control to cut off input source during switch OFF and inputs relation with main circuit, realizes the isolation between each voltage source simultaneously, will not influence each other；Improve the reliability that system works under complex environment
3. each voltage source input of the present invention adds input capacitance, makes each voltage source steadily export, and provides enough transient currents when first selecting switch open accordingly；Thus improve efficiency, decrease energy loss, be conducive to protection environment and increase the benefit.
4.Buck and Boost circuit are integrated in set of circuits, are mutually changed by control signal, and the two shares same regulation inductance and electric capacity of voltage regulation, reduces equipment volume and cost；Management for the new forms of energy such as wind energy, solar energy provides developing further of new auxiliary plan, beneficially related industry with utilizing.
Accompanying drawing illustrates:
Fig. 1 is the circuit structure diagram of the DC chopped-wave device with multichannel input processing ability of the present invention；
In figure: first via input voltage source 1, second road input voltage source 2, first via input capacitance 3, second tunnel input capacitance 4, first via input controls switch 5, second tunnel input controls switch 6, first via input isolating diode 7, second tunnel input isolating diode 8, blood pressure lowering adjusts switch 9, blood pressure lowering fly-wheel diode 10, adjust inductance 11, boosting adjusts switch 12, boosting fly-wheel diode 13, output filter capacitor 14, output loading 15, n-th road input voltage source 16, n-th tunnel input capacitance 17, n-th tunnel input controls switch 18, n-th tunnel input isolating diode 19；
Fig. 2 is the control signal graph of a relation of Boost pressure-increasning state；
In figure: boosting adjusts switching signal 20, first via input control switching signal the 21, second tunnel input controls the input of switching signal the 22, n-th tunnel and controls switching signal 23；
Fig. 3 is the control signal graph of a relation of Buck blood pressure lowering state；
In figure: blood pressure lowering adjusts switching signal 24, first via input controls input control switching signal the 26, the n-th tunnel input of switching signal the 25, second tunnel and controls switching signal 27；
Detailed description of the invention:
Embodiment 1:
The DC chopped-wave device of a kind of multichannel input processing ability, the design of this chopping device has two-way input capability.
The DC chopped-wave device with multichannel input processing ability that the present invention provides includes main circuit and drives signaling system two parts；Main circuit is scheme main body, drives signaling system in order to ensure that main circuit works according to design.
Main circuit is made up of active multichannel input selection control and Buck-Boost rising-falling tone volt circuit two parts；As it is shown in figure 1, left dotted box portion corresponding active multichannel input selection control, right dotted box portion correspondence Buck-Boost lifting voltage-regulating system.
Active multichannel input selection control is made up of two-way input selection control in parallel；Input selection control in each road is controlled to switch and input isolating diode formed by input voltage source, input capacitance, input；Control switch and input isolating diode composition series circuit again with input after input voltage source is in parallel with input capacitance；Active multichannel input selection control is mainly controlled on off state by input and selects input voltage source；Input controls on off state by driving signaling system to determine.
Buck-Boost rising-falling tone volt circuit is made up of blood pressure lowering adjustment switch 9, blood pressure lowering fly-wheel diode 10, adjustment inductance 11, boosting adjustment switch 12, boosting fly-wheel diode 13, output filter capacitor 14；After blood pressure lowering adjusts switch 9 series connection adjustment inductance 11, then series boosting fly-wheel diode 13；Blood pressure lowering fly-wheel diode 10 negative pole is connected on blood pressure lowering and adjusts switch 9 and adjust inductance 11 junction, and its positive pole is connected on the negative terminal of input voltage source；Boosting adjusts the junction that switch 12 one end are connected to adjust inductance 11 with boosting fly-wheel diode 13, and the other end is connected to input voltage source negative terminal, and load 15 is connected to boost between fly-wheel diode 13 negative pole and input voltage source negative terminal；Boosting adjusts switch 12 and adjusts the duty of switch 9 by driving signaling system control with blood pressure lowering；Under driving signaling system to control, holding boosting adjusts switch 12 and is off, and ON time and the frequency of regulation blood pressure lowering adjustment switch 9 can make Buck-Boost rising-falling tone volt circuit be in decompression mode, i.e. typical Buck reduction voltage circuit；It is in the conduction state that holding blood pressure lowering adjusts switch 9, and ON time and the frequency of regulation boosting adjustment switch 12 can make Buck-Boost rising-falling tone volt circuit be in boost mode, i.e. typical Boost circuit.This both of which freely can be switched by driving signaling system to control it, makes main circuit multichannel input voltage reduce or raises, to meet the requirement of main circuit output voltage.
In the present embodiment, two-way input voltage source is provided for SFP11072 polycrystalline silicon solar assembly for SFM30072 monocrystaline silicon solar cell assembly and two models of series connection by two models of series connection respectively, often group maximum output voltage 60V, maximum current 10A；Blood pressure lowering adjusts switch 9 and boosting adjusts switch 12 use field effect transistor IRF3205, and the input of each road controls switch and uses field effect transistor IRF460, and each field effect transistor all uses driving chip IR2101 to be driven.Blood pressure lowering fly-wheel diode 10, boosting fly-wheel diode 13 and Ge Lu input isolating diode use Schottky diode MBR30.Adjust inductance 11 and use the ring winding inductance of rated current 50A, inductance value 33uH.Output filter capacitor 14 uses 4 pressure 63V of parallel connection, the electrochemical capacitor of capacitance 4700Uf, and total capacitance reaches 18800uf.Each road input capacitance uses pressure 63V, the electrochemical capacitor of capacitance 10000uf.Main circuit output 48V voltage is that load supplying is the charging of 48VMaxwell super capacitor group.
Under a certain moment duty, first via input voltage source and the oscillogram of output voltage, input voltage source mono-crystalline silicon solar assembly provides voltage 60V, the second road input voltage source polycrystalline silicon solar plate to provide voltage 55V, and output voltage is 48V.
Driving the STM32F103C8T6 microcontroller that signaling system uses ST Microelectronics to produce as controller, this controller is internally integrated ADC analog-to-digital conversion module, can gather each road input source voltage and system output voltage, as the foundation controlling output.Controller possesses 6 tunnel pulse fan-out capabilities, is used for controlling the input of each road and controls to switch and blood pressure lowering adjustment switch, boosting adjustment switch.The present embodiment working method, mainly based on blood pressure lowering, adjusts boosting switch 12 normal offs and opens, adjusts switch 9 offer frequency for blood pressure lowering and is 30Khz to the maximum, and largest duty cycle is the driving square wave of 60%.Each input channel uses the working method transmitted electricity in turn, and the Pulse Width Control cycle is 40us.
Table 1: assembly of the invention groundwork parameter
Output ripple in data records under conditions of 36V, 5A.
Embodiment 2:
A kind of DC chopped-wave device of multichannel input processing ability, this device is used in the monocrystaline silicon solar cell assembly (connecting 20) equipped with SFM30072 model, in the system of SFP11072 model polycrystalline silicon solar assembly (connecting 20) and wind-driven generator that bench-type No. 1 is FD21-100, there are 3 road input capabilities.Every road output maximum voltage 650V, maximum current 250A.
In the present embodiment, in circuit, blood pressure lowering adjusts switch 9 and boosting adjusts switch 12 use IGBT module BSM75GB170DN2, the input of each road controls switch and uses IGBT module BSM75GB120DN2, and each IGBT module all uses CONCEPT 2SD315AI to drive assembly to be driven.Blood pressure lowering fly-wheel diode 10, boosting fly-wheel diode 13 and Ge Lu input isolating diode use ZK300A1 fast recovery diode.Adjust inductance 11 and use the ring winding inductance of rated current 300A, inductance value 1.2uH.The capacitance group that output filter capacitor 14 uses pressure 1050V, capacitance to be 13F.Each road input capacitance uses pressure 800V, the capacitance group of capacitance 5.4F.Main circuit output high pressure is that load supplying is i.e. input in inverter become three-phase alternating voltage and can drive Grundos-M4000 motor.
Under a certain moment duty, input voltage source and the oscillogram of output voltage, first via input voltage source monocrystaline silicon solar cell assembly (20) provides voltage 600V, second road input voltage source polycrystalline solar module (20) provides low pressure 550V, 3rd road input voltage source wind-driven generator provides voltage 650V, and output voltage is 1000V.
Driving the STM32F103C8T6 microcontroller that signaling system uses ST Microelectronics to produce as controller, this controller is internally integrated ADC analog-to-digital conversion module, can gather each road input source voltage and system output voltage, as the foundation controlling output.Controller possesses 5 tunnel pulse fan-out capabilities, is used for controlling the input of each road and controls to switch and blood pressure lowering adjustment switch, boosting adjustment switch.This example working method, mainly based on boosting.Blood pressure lowering adjusting voltage switch 9 often turn on, adjusting switch for boosting provides frequency to be 50Khz to the maximum, the driving square wave of largest duty cycle 60%；Each input channel uses the working method transmitted electricity in turn, and the Pulse Width Control cycle is 600us.
Table 2: device groundwork parameter
| Output voltage range | 0～1000V |
| Input voltage range | 0～650V (every road) |
| Maximum output current | 250A |
| Maximum input current | 120A (every road) |
| Output | 16kW |
| Output ripple | 80mV |
| Overall efficiency | 70% |
Output ripple in data records under conditions of 240V, 5A.
Claims (3)
1. a DC chopped-wave device with multichannel input processing ability, it is characterised in that: by main circuit and driving
Signaling system two parts are composed in series, wherein, main circuit by active multichannel input selection control and
Buck-Boost rising-falling tone volt circuit forms；Active multichannel input selection control is by n road input choosing in parallel
Selecting controller composition, wherein, n is the integer more than or equal to 1；Each road input selection control is by inputting
Voltage source, input capacitance, input control switch and input isolating diode composition；Input voltage source and input electricity
Control switch and input isolating diode composition series circuit with input after holding parallel connection；The input of active multichannel selects
Controller by input control switch to select input voltage source, input control switch by drive signaling system control；
Drive the pulse driving circuit that signaling system is made up of single-chip microcomputer and switching tube driving chip；Buck-Boost
Rising-falling tone volt circuit is adjusted switch (9), blood pressure lowering fly-wheel diode (10) by blood pressure lowering, is adjusted inductance (11), liter
Pressure adjusts switch (12), boosting fly-wheel diode (13), output filter capacitor (14) composition, parts (15)
For load；After blood pressure lowering adjusts switch (9) series connection adjustment inductance (11), then series boosting fly-wheel diode (13)；
Blood pressure lowering fly-wheel diode (10) negative pole is connected on blood pressure lowering and adjusts switch (9) and adjust inductance (11) junction,
Its positive pole is connected on the negative terminal of input voltage source；Boosting adjusts switch (12) one end and is connected to adjust inductance (11)
With the junction of boosting fly-wheel diode (13), the other end is connected to input voltage source negative terminal, loads (15)
It is connected to boost between fly-wheel diode (13) negative pole and input voltage source negative terminal；Boosting adjusts switch (12)
The duty of switch (9) is adjusted by driving signaling system control with blood pressure lowering.
A kind of DC chopped-wave device with multichannel input processing ability, its feature exists
In: described input voltage source is monocrystaline silicon solar cell assembly, polycrystalline silicon solar assembly or wind-power electricity generation
Machine.
A kind of DC chopped-wave device with multichannel input processing ability, its feature exists
In: described drive signaling system control signal be frequency 20～100Khz, amplitude be the pulsewidth of 15～20V
Modulated square wave.
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| CN201610356265.4A CN105939110A (en) | 2016-05-26 | 2016-05-26 | DC chopper device with multi-path input processing ability |
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| CN201610356265.4A CN105939110A (en) | 2016-05-26 | 2016-05-26 | DC chopper device with multi-path input processing ability |
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Citations (5)
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| CN102857101A (en) * | 2012-09-03 | 2013-01-02 | 无锡中星微电子有限公司 | Multi-input single-output DC (direct current)/DC converter |
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| CN103312153A (en) * | 2012-03-12 | 2013-09-18 | 南京航空航天大学 | Parallel multi input coupled inductor buck and boost converter |
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2016
- 2016-05-26 CN CN201610356265.4A patent/CN105939110A/en active Pending
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| WO2005046033A2 (en) * | 2003-10-29 | 2005-05-19 | The Board Of Trustees Of The University Of Illinois | Multiple input dc-dc power converter |
| CN101707439A (en) * | 2009-11-24 | 2010-05-12 | 南京航空航天大学 | Multi-input Buck direct-current converter and control system thereof |
| CN103312153A (en) * | 2012-03-12 | 2013-09-18 | 南京航空航天大学 | Parallel multi input coupled inductor buck and boost converter |
| CN102857101A (en) * | 2012-09-03 | 2013-01-02 | 无锡中星微电子有限公司 | Multi-input single-output DC (direct current)/DC converter |
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