CN106611962B - A kind of chain type cascade motor synchronizing solar energy power generating control device and control method - Google Patents
A kind of chain type cascade motor synchronizing solar energy power generating control device and control method Download PDFInfo
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- CN106611962B CN106611962B CN201510708463.8A CN201510708463A CN106611962B CN 106611962 B CN106611962 B CN 106611962B CN 201510708463 A CN201510708463 A CN 201510708463A CN 106611962 B CN106611962 B CN 106611962B
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- 230000001360 synchronised effect Effects 0.000 claims abstract description 34
- 238000010248 power generation Methods 0.000 claims abstract description 9
- KEAFBPBSUPYFGT-UHFFFAOYSA-N n-(cyanomethyl)-n-morpholin-4-ylnitrous amide Chemical compound N#CCN(N=O)N1CCOCC1 KEAFBPBSUPYFGT-UHFFFAOYSA-N 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000010349 pulsation Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 11
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- 230000006837 decompression Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
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- 238000003912 environmental pollution Methods 0.000 description 1
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- H02J3/385—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
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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
A kind of chain type cascade motor synchronizing solar energy power generating control device, including solar panel, circuit of synchronous rectification containing energy storage, H bridge fold wave chain type cascade parallel network circuit, cutting-in control unit, AC voltage transformer and AC current transformer.It is cascaded present invention employs chain type and folds wave interconnection technology, solve the harmonic problem of inverter generation, make photovoltaic power generation system output power fluctuation small containing energy storage, with whole generating efficiency height, photovoltaic power generation output pulsation is gentle, harmonic wave is small, invents significant.
Description
Technical field
The present invention relates to solar energy power generating field, specifically a kind of chain type cascades motor synchronizing solar energy power generating control
Device processed and control method.
Background technique
The energy is the important material base that the mankind depend on for existence and development, and an important factor for influence national security.It passes
The fossil energy of system belongs to non-renewable energy resources, is faced with exhausted danger.On the other hand, due to combustion of fossil fuels, to big
Gas causes serious pollution.
In order to solve this significant problem of energy supply, global every country all accelerates the exploitation to new energy.
Solar energy has the characteristics that following as a kind of clean energy resource: first, it is inexhaustible.Second, it is easily obtained, it is generally existing.
Third, cleaning is pollution-free.
The development and utilization of solar energy are to solve traditional fossil energy bring energy shortage, environmental pollution and greenhouse effects etc.
The effective way of problem is the ideal alternative energy source of human development.The utilization of solar energy mainly includes that solar thermal utilization (send out by heating power
Electricity, the solar water heater on roof etc.), solar power generation, photochemical utilize.Photovoltaic power generation by remote villages and special is answered
Developed with to the direction for generating electricity by way of merging two or more grid systems and powering with Integration of building, photovoltaic power generation is from the supplement energy to alternative energy source transition.
China's photovoltaic power generation industry is started in the 1970s, entering stable development period, the sun in the mid-90
Energy battery and module production increase year by year, have leapt to the whole world first at present.
Under a series of stimulation of preferential policies of country, China's theCourse of PV Industry is rapid, China's photovoltaic of the end of the year in 2012
Capacity of installed generator has reached 7,000,000 kilowatts, and the end of the year in 2013 reaches 17,160,000 kilowatts, has reached 28,050,000 thousand within 2014
Watt.
China's photovoltaic power generation is mainly based on large-scale photovoltaic power station, the centralized photovoltaic DC-to-AC converter or string type light of use
Lie prostrate inverter, the low problem of generally existing solar panel efficiency, simultaneously because hot spot effect causes solar panel service life low.
Summary of the invention
In view of the above-mentioned problems, the object of the present invention is to provide a kind of chain type of low cost cascade motor synchronizing photovoltaic hairs
Electric control technology, can greatly improve the efficiency of photovoltaic plant, while extend the service life of photovoltaic battery panel, promote China's photovoltaic
The sound development of power generation cause.
Technical solution of the invention is as follows:
A kind of chain type cascade motor synchronizing solar energy power generating control device, it is characterized in that, including solar panel,
Circuit of synchronous rectification containing energy storage, H bridge are folded wave chain type cascade parallel network circuit, cutting-in control unit, AC voltage transformer and are exchanged
Current transformer；
The output end of the solar panel is connected with the input terminal of circuit of synchronous rectification containing energy storage, and it is same that this contains energy storage
The output end for walking rectification circuit is connected with the input terminal that the H bridge folds wave chain type cascade parallel network circuit, which folds the cascade of wave chain type
The output end of parallel network circuit is connected with the input terminal of the AC voltage transformer, the input terminal string of the AC current transformer
Be connected to the H bridge fold wave chain type cascade parallel network circuit output end, the H bridge fold wave chain type cascade parallel network circuit output end with
Power grid is connected；The ac voltage signal input terminal of the signal output end of the AC voltage transformer and the cutting-in control unit
It is connected, the ac current signal input terminal phase of the signal output end of the AC current transformer and the cutting-in control unit
Even, N number of H bridge control signal output of the cutting-in control unit folds wave chain type cascade parallel network circuit with the H bridge respectively
Control signal input is connected.
The circuit of synchronous rectification containing energy storage is that the circuit of synchronous rectified boost containing energy storage or synchronous rectification containing energy storage are depressured
Circuit.
The circuit of synchronous rectified boost containing energy storage includes boosting reactor, the first power tube, the second power tube, input
Filter capacitor, output filter capacitor, voltage sensor, current sensor and MPPT controller；The input filter capacitor is simultaneously
It connects between the positive and negative anodes of the input terminal of the circuit of synchronous rectification containing energy storage, the emitter of first power tube and
The connected configuration node of the emitter of two power tubes, the collector of first power tube and the synchronous rectification containing energy storage electricity
The anode circuit on road is connected, the anode of the collector composition output of second power tube, and the one of the boosting reactor
End is connected with the anode of the input terminal, the other end and first power tube, the second function of the boosting reactor
The node of rate pipe is connected, and the control terminal of first power tube is connected with first output signal end of MPPT controller, institute
The control signal end for stating the second power tube is connected with the second output signal end of the MPPT controller, first power
The control logic of pipe and the second power tube is on the contrary, the voltage signal inputs of the MPPT controller and the voltage sensor
The voltage signal output end of device is connected, the electricity of the current signal input of the MPPT controller and the current sensor
It flows signal output end to be connected, the input terminal of the current sense input and the circuit of synchronous rectification containing energy storage is born
Extremely it is connected, the input terminal of the voltage sensor is connected with the anode of the input terminal of the circuit of synchronous rectification containing energy storage.
The H bridge folds the H-bridge circuit that wave chain type cascade parallel network circuit includes N number of parallel connection, and each H-bridge circuit includes 4 function
Rate pipe and referred to as S1, S2, S3, S4, S1 are serially connected with S2, and S3 is serially connected with S4, this two string connects together, S1's
Control that signal is identical as the control signal of S3, and the control signal of S2 is identical as the control signal of S4, S1's controls signal and S2
Control signal on the contrary, the control signal input of S1 and S3 and the cutting-in control unit control signal the first output end phase
Even, the S2 and the control signal input of S4 and the control signal second output terminal of the cutting-in control unit are connected；
The output end of N number of H bridge control signal of the cutting-in control unit folds the cascade of wave chain type with the H bridge simultaneously respectively
The control signal input of N number of H-bridge circuit of net circuit is connected, the ac voltage signal input terminal of the cutting-in control unit
It is connected with the voltage signal output end of the AC voltage transformer, the alternating current letter of the cutting-in control unit input
Number input terminal be connected with the current signal output end of the AC current transformer.
The quantity N that the H bridge folds the H-bridge circuit that wave chain type cascade parallel network circuit includes is 12 or 16.
The power tube is MOSFET or IGBT switching tube.
The input terminal of the synchronous rectified boost circuit of low pressure containing energy storage simultaneously connects an electrolytic capacitor, baby battery or other storages
It can element.
The solar panel is that 1 piece of solar panel or muti-piece solar panel are connected, as shown in Figure 5.
Universe motor synchronizing solar energy power generating control device is cascaded using the chain type, simultaneously to solar energy power generating
Network control method, the method steps are as follows:
Step 1, the initial value of cutting-in control unit is set:
PWM1 initial value is set as 0.8, sets PWM2 initial value as 0.5, the setting control angle signal θ initial value=0；
Step 2, N number of control signal θ angle value θ that the H bridge folds wave chain type cascade parallel network circuit is calculated according to the following formula
Angle: where θn=n θA-(n-1)θB+N(cosθA-cosθB) for n to link number, N is bridge module serial number,
θA=sin-1A=arcsinA；θB=sin-1B=arcsinB；
A=n/N；B=(n-1)/N；
Step 3, the control of the MPPT controller:
PWM1 initial value is set as 0.8；The MPPT controller by acquire the voltage sensor, current sensor it is defeated
Signal out synchronizes rectification control to first power tube and the second power tube, realizes the maximum of solar panel
Power tracking, PWM1 increases by 0.01 since initial value every time, until searching maximum power.
Compared with prior art, the features of the present invention is as follows:
1. pair monolithic or several pieces of photovoltaic battery panels carry out MPPT control, the efficiency of photovoltaic plant is improved；
2. solving the problems, such as photovoltaic battery panel hot spot, the solar panel service life is extended；
3. having comprehensively considered cost, cost performance is high.
Detailed description of the invention
Fig. 1 is the schematic diagram of chain type cascade motor synchronizing solar energy power generating control device of the present invention.
Fig. 2 is the circuit diagram of synchronous rectified boost containing energy storage of the invention.
Fig. 3 is the reduction voltage circuit figure of synchronous rectification containing energy storage of the invention.
Fig. 4 is H-bridge circuit block diagram of the invention.
Fig. 5 is the schematic diagram that 2 pieces of solar panel series connection of use of the invention carry out MPPT.
Specific embodiment
Below with reference to embodiment and attached drawing, the invention will be further described, but protection model of the invention should not be limited with this
It encloses.
Referring to Fig. 1, Fig. 1 is the schematic diagram of chain type cascade motor synchronizing solar energy power generating control device of the present invention, such as
Shown in figure, a kind of chain type cascades motor synchronizing solar energy power generating control device, including solar panel 2, synchronous containing energy storage
It is mutual that rectification circuit 3, H bridge fold wave chain type cascade parallel network circuit 4, cutting-in control unit 5, AC voltage transformer 6 and alternating current
Sensor 7；
The output end of the solar panel 2 is connected with 3 input terminal of the circuit of synchronous rectification containing energy storage, this contains energy storage
The output end of circuit of synchronous rectification 3 is connected with the input terminal that the H bridge folds wave chain type cascade parallel network circuit 4, which folds wave chain type
The output end of cascade parallel network circuit 4 is connected with the input terminal of the AC voltage transformer 6, the AC current transformer 7
Input terminal is serially connected with the output end that the H bridge folds wave chain type cascade parallel network circuit 4, and the H bridge folds wave chain type and cascades parallel network circuit 4
Output end be connected with power grid；The alternating current of the signal output end of the AC voltage transformer 6 and the cutting-in control unit 5
Signal input part is pressed to be connected, the alternating current of the signal output end of the AC current transformer 7 and the cutting-in control unit 5
Signal input part is connected, and N number of H bridge control signal output of the cutting-in control unit 5 folds wave chain type grade with the H bridge respectively
The control signal input for joining parallel network circuit 4 is connected.
The circuit of synchronous rectification containing energy storage 3 is the circuit of synchronous rectified boost containing energy storage or the decompression electricity of synchronous rectification containing energy storage
Road.
Fig. 2 is the circuit diagram of synchronous rectified boost containing energy storage of the invention, as shown, including the reactor 8, the first function of boosting
Rate pipe 9, the second power tube 10, input filter capacitor 11, output filter capacitor 12, voltage sensor 13,14 and of current sensor
MPPT controller 15；The input filter capacitor 11 is being attempted by the input terminal of the circuit of synchronous rectification containing energy storage 3 just
Between cathode, the emitter of first power tube 9 is connected configuration node with the emitter of the second power tube 10, and described
The collector of one power tube 9 is connected with the anode circuit of the circuit of synchronous rectification containing energy storage 3, second power tube 10
Collector constitute output anode, one end of the boosting reactor 8 is connected with the anode of the input terminal, described
The other end of boosting reactor 8 is connected with the node of first power tube 9, the second power tube 10, first power tube 9
Control terminal be connected with 15 first output signal end of MPPT controller, the control signal end of second power tube 10 with
15 second output signal end of MPPT controller is connected, and the control of first power tube 9 and the second power tube 10 is patrolled
Collect the voltage signal output end on the contrary, the voltage signal inputs of the MPPT controller 15 and the voltage sensor 13
It is connected, the current signal output end phase of the current signal input of the MPPT controller 15 and the current sensor 14
Even, 14 input terminal of current sensor is connected with the cathode of the input terminal of the circuit of synchronous rectification containing energy storage 3, described
The input terminal of voltage sensor 13 be connected with the anode of the input terminal of the circuit of synchronous rectification containing energy storage 3.
Fig. 3 is the reduction voltage circuit figure of synchronous rectification containing energy storage of the invention, as shown, including decompression reactor 8, the first function
Rate pipe 9, the second power tube 10, input filter capacitor 11, output filter capacitor 12, voltage sensor 13,14 and of current sensor
MPPT controller 15；The input filter capacitor 11 is being attempted by the input terminal of the circuit of synchronous rectification containing energy storage 3 just
Between cathode, the emitter of first power tube 9 is connected configuration node with the collector of the second power tube 10, and described
The collector of one power tube 9 is connected with the anode circuit of the circuit of synchronous rectification containing energy storage 3, second power tube 10
Emitter be connected with the anode of the input terminal, one end of the described decompression reactor 8 and first power tube 9,
The node of second power tube 10 is connected, and the other end of the decompression reactor 8 constitutes the anode of output end, first power
The control terminal of pipe 9 is connected with 15 first output signal end of MPPT controller, the control signal of second power tube 10
End is connected with 15 second output signal end of MPPT controller, the control of first power tube 9 and the second power tube 10
Logic processed is on the contrary, the voltage signal inputs of the MPPT controller 15 and the voltage signal of the voltage sensor 13 are defeated
Outlet is connected, and the current signal of the current signal input of the MPPT controller 15 and the current sensor 14 exports
End is connected, and 14 input terminal of current sensor is connected with the cathode of the input terminal of the circuit of synchronous rectification containing energy storage 3,
The input terminal of the voltage sensor 13 is connected with the anode of the input terminal of the circuit of synchronous rectification containing energy storage 3.
Fig. 4 is H-bridge circuit block diagram of the invention, as shown, it includes N number of parallel connection that H bridge, which folds wave chain type cascade parallel network circuit 4,
H-bridge circuit, each H-bridge circuit includes 4 power tubes and referred to as S1, S2, S3, S4, S1 are serially connected with S2, S3 and S4 string
It is connected together, this two string connects together, and the control signal of S1 is identical as the control signal of S3, the control of the control signal and S4 of S2
Signal processed is identical, the control signal of S1 and the control signal of S2 on the contrary, the control signal input of S1 and S3 with it is described grid-connected
The first output end of control signal of control unit 5 is connected, the control signal input and described and network control of the S2 and S4
The control signal second output terminal of unit 5 processed is connected；
The output end of N number of H bridge control signal of the cutting-in control unit 5 folds the cascade of wave chain type with the H bridge respectively
The control signal input of N number of H-bridge circuit of parallel network circuit 4 is connected, and the ac voltage signal of the cutting-in control unit 5 is defeated
Enter end to be connected with the voltage signal output end of the AC voltage transformer 6, the exchange that the cutting-in control unit 5 inputs
The input terminal of current signal is connected with the current signal output end of the AC current transformer 7；
The quantity N that the H bridge folds the H-bridge circuit that wave chain type cascade parallel network circuit 4 includes is 12 or 16.
The power tube is MOSFET or IGBT switching tube.
The synchronous rectified boost of low pressure containing the energy storage circuit (3 input terminal and connect an electrolytic capacitor, baby battery or other
Energy-storage travelling wave tube.
The solar panel 2 is 1 piece of solar panel or muti-piece solar panel serial or parallel connection.
Universe motor synchronizing solar energy power generating control device is cascaded using the chain type, simultaneously to solar energy power generating
Network control method, the method steps are as follows:
Step 1, the initial value of cutting-in control unit 5 is set:
PWM1 initial value is set as 0.8, sets PWM2 initial value as 0.5, the setting control angle signal θ initial value=0；
Step 2, N number of control signal θ angle value θ that the H bridge folds wave chain type cascade parallel network circuit 4 is calculated according to the following formula
Angle: θn=n θA-(n-1)θB+N(cosθA-cosθB) wherein, n is link number, and N is bridge module serial number,
θA=sin-1A=arcsinA；θB=sin-1B=arcsinB；
A=n/N；B=(n-1)/N；
Step 3, the control of the MPPT controller 15:
PWM1 initial value is set as 0.8；The MPPT controller 15 is by acquiring the voltage sensor 13, current sensor
14 output signal synchronizes rectification control to first power tube 9 and the second power tube 10, realizes solar battery
The maximal power tracing of plate 2, PWM1 increases by 0.01 since initial value every time, until searching maximum power.
Claims (1)
1. a kind of cascade universe motor synchronizing solar energy power generating control device using chain type, to solar photovoltaic power generation grid-connecting control
Method processed, the chain type cascade universe motor synchronizing solar energy power generating control device, including solar panel (2), contain
Energy storage circuit of synchronous rectification (3), H bridge fold wave chain type and cascade parallel network circuit (4), cutting-in control unit (5), AC voltage transformer
(6) and AC current transformer (7)；The output end of the solar panel (2) and the circuit of synchronous rectification containing energy storage (3)
Input terminal is connected, this contains the output end of energy storage circuit of synchronous rectification (3) and the H bridge folds wave chain type cascade parallel network circuit (4)
Input terminal is connected, which folds the output end of wave chain type cascade parallel network circuit (4) and the input of the AC voltage transformer (6)
End is connected, and the input terminal of the AC current transformer (7) is serially connected with the H bridge and folds the defeated of wave chain type cascade parallel network circuit (4)
Outlet, the output end that the H bridge folds wave chain type cascade parallel network circuit (4) are connected with power grid；The AC voltage transformer (6)
Signal output end is connected with the ac voltage signal input terminal of the cutting-in control unit (5), the AC current transformer (7)
Signal output end be connected with the ac current signal input terminal of the cutting-in control unit (5), the cutting-in control unit (5)
N number of H bridge control signal output respectively with the H bridge fold wave chain type cascade parallel network circuit (4) control signal input phase
Even, which is characterized in that the method steps are as follows:
Step 1, the initial value of cutting-in control unit (5) is set:
PWM1 initial value is set as 0.8, sets PWM2 initial value as 0.5, the setting control angle signal θ initial value=0；
Step 2, N number of control signal θ angle value that the H bridge folds wave chain type cascade parallel network circuit (4) is calculated according to the following formula:
θn=n θA-(n-1)θB+N(cosθA-cosθB)
Wherein, n is link number, and N is H-bridge circuit quantity in parallel,
θA=sin-1A=arcsinA；θB=sin-1B=arcsinB；
A=n/N；B=(n-1)/N；
Step 3, the control of MPPT controller (15):
PWM1 initial value is set as 0.8；The MPPT controller (15) is by acquiring the voltage transformer (13), current transformer
(14) output signal synchronizes rectification control to the first power tube (9) and the second power tube (10), realizes solar battery
The maximal power tracing of plate (2), PWM1 increases by 0.01 since initial value every time, until searching maximum power.
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| CN107565840B (en) * | 2017-10-12 | 2019-08-27 | 合肥工业大学 | The harmonic compensation control method of Cascade H bridge type photovoltaic combining inverter |
| CN110224668A (en) * | 2019-05-13 | 2019-09-10 | 上海空间电源研究所 | A kind of tandem type MPPT energy management system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867291A (en) * | 2009-04-17 | 2010-10-20 | 吕斌 | Household solar photovoltaic inverter |
| CN103828217A (en) * | 2011-08-31 | 2014-05-28 | 奥普蒂斯丁技术公司 | DC-AC inverter for photovoltaic systems |
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2015
- 2015-10-27 CN CN201510708463.8A patent/CN106611962B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867291A (en) * | 2009-04-17 | 2010-10-20 | 吕斌 | Household solar photovoltaic inverter |
| CN103828217A (en) * | 2011-08-31 | 2014-05-28 | 奥普蒂斯丁技术公司 | DC-AC inverter for photovoltaic systems |
Non-Patent Citations (1)
| Title |
|---|
| 基于MPPT的离网光伏发电系统的设计;刘三山;《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》;20140415;5-26 |
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