CN104201713A - Potential induced degradation resistance circuit for multi-machine parallel connection photovoltaic power generation system and pressure regulating device - Google Patents
Potential induced degradation resistance circuit for multi-machine parallel connection photovoltaic power generation system and pressure regulating device Download PDFInfo
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- CN104201713A CN104201713A CN201410413916.XA CN201410413916A CN104201713A CN 104201713 A CN104201713 A CN 104201713A CN 201410413916 A CN201410413916 A CN 201410413916A CN 104201713 A CN104201713 A CN 104201713A
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- 238000010248 power generation Methods 0.000 title abstract description 6
- 230000015556 catabolic process Effects 0.000 title abstract description 5
- 238000006731 degradation reaction Methods 0.000 title abstract description 5
- 230000001105 regulatory effect Effects 0.000 title abstract 4
- 238000002955 isolation Methods 0.000 claims abstract description 10
- 230000006698 induction Effects 0.000 claims description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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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 potential induced degradation resistance circuit for a multi-machine parallel connection photovoltaic power generation system and a pressure regulating device. The circuit comprises N photovoltaic inverters which are in parallel connection; output ends of the N photovoltaic inverters are connected with an input end of the same isolation transformer; an output end of the isolation transformer is connected with a power grid; an input end of every photovoltaic inverter is connected with at least one battery panel; the number of the battery panels being connected to the input end of the first inverter is at least one more than that of the battery panels being connected to other inverters; only a negative electrode of the first inverter of the N inverters is connected with a positive electrode of an input end of the pressure regulating device; the input end of the pressure adjusting device is connected with a power grid; an output end of the pressure adjusting device is connected with the earth. Accordingly, the potential induced degradation resistance circuit for the multi-machine parallel connection photovoltaic power generation system and the pressure regulating device can avoid the negative electrodes of the input ends of the photovoltaic inverters generating negative pressure to the earth and accordingly avoids potential induced degradation resistance of the battery panel in the photovoltaic power generation system.
Description
Technical field
The present invention relates to photovoltaic power generation technology field, specially refer to potential electromotive force induction attenuator circuit and regulator under a kind of multi-machine parallel connection.
Background technology
At present in photovoltaic power generation technology, potential electromotive force decay (the English potential induced Degradation by name of photovoltaic module, PID) be newer photovoltaic module attenuation effect, along with photovoltaic generating system voltage is more and more higher, photovoltaic module internal cell sheet is also more and more higher to the low pressure of the earth, aluminium matter frame ground connection due to photovoltaic module, so the negative pressure that photovoltaic module metal edge frame over the ground just forms is also more and more higher, under high negative pressure, there is migration in the ion in the encapsulating material of photovoltaic module and the upper surface of photovoltaic module and lower surface material, not only formed the damage of photovoltaic module oneself, also formed the generating efficiency decay of photovoltaic module, thereby affected the decay of the fan-out capability of photovoltaic generating system.
From current technology, show, in order to prevent the potential electromotive force induction decay of photovoltaic module, by the input of many same isolating transformers of photovoltaic DC-to-AC converter output termination, the output of isolating transformer gets access to grid, the negative pole of the input of every photovoltaic DC-to-AC converter is connect to the earth, the inside DC bus mid point of the normal work of photovoltaic DC-to-AC converter and the mid point equipotential of isolating transformer, it is the inside mid point equipotential of each photovoltaic DC-to-AC converter, because the cathode voltage of the input of each inverter is inconsistent, and the mid point of the DC bus of each inverter is waited for current potential, when the input cathode voltage of photovoltaic DC-to-AC converter changes, the input cathode of photovoltaic DC-to-AC converter also can larger variation to the earth, there is larger leakage current, thereby cause the photovoltaic DC-to-AC converter cannot steady operation.
Summary of the invention
The object of this invention is to provide the potential electromotive force induction attenuator circuit of a kind of anti-multi-machine parallel connection photovoltaic generating system and regulator, to solve potential electromotive force induction decay in existing multi-machine parallel connection photovoltaic generating system, also solved Ground leakage current technical problem out of control simultaneously.
First aspect, the present patent application implements to provide the potential electromotive force induction of a kind of anti-multi-machine parallel connection photovoltaic generating system attenuator circuit, and described circuit comprises:
N platform photovoltaic DC-to-AC converter is in parallel, the output of described N platform photovoltaic DC-to-AC converter is received the input of same isolating transformer, the input of each photovoltaic DC-to-AC converter in described N platform photovoltaic DC-to-AC converter is connected at least one cell panel, the output voltage of described cell panel is identical, in described N platform photovoltaic DC-to-AC converter, only have the input cathode of First photovoltaic DC-to-AC converter to connect the positive pole of the output of regulator, the negative pole of the output of regulator connects the earth.N>=2 wherein.The quantity of the input termination cell panel of described First photovoltaic DC-to-AC converter, is greater than the quantity of the input termination cell panel of other each photovoltaic DC-to-AC converters in N platform photovoltaic DC-to-AC converter.
In conjunction with first aspect, in the mode of the possible realization of the first, the quantity of the input termination cell panel of other photovoltaic DC-to-AC converters of described N platform photovoltaic DC-to-AC converter except First photovoltaic DC-to-AC converter is A, and the quantity of the input termination cell panel of described First photovoltaic DC-to-AC converter is at least A+B.A is integer, and A>0.B is integer, B>0.
In conjunction with first aspect, in the mode of the possible realization of the second, the negative pole of described First photovoltaic DC-to-AC converter connects the positive pole of the output of regulator, and the negative pole of the output of regulator connects the earth; Or the negative pole of the input of described First photovoltaic DC-to-AC converter connects the positive pole of the output of regulator by fuse, the negative pole of the output of regulator connects the earth.Or the negative pole of the input of described First photovoltaic DC-to-AC converter connects the positive pole of the output of regulator by switch, the negative pole of the output of regulator connects the earth.Or the negative pole of the input of described First photovoltaic DC-to-AC converter connects the positive pole of the output of regulator by diode, the negative pole of the input of First photovoltaic DC-to-AC converter connects the negative electrode of diode, the anode of diode connects the positive pole of the output of regulator, and the negative pole of the output of regulator connects the earth.
Second aspect, the application also provides a kind of regulator, and described circuit comprises:
The input of regulator gets access to grid, the input of the AC/DC high-frequency isolation power supply of described regulator gets access to grid, the output of described regulator is high voltage direct current, the positive pole of the output of described regulator connects the negative pole of described First photovoltaic DC-to-AC converter, and the negative pole of the output of described regulator connects the earth.
In conjunction with second aspect, in the possible implementation of the first, the output of described regulator just by switch, connect the negative pole of described First photovoltaic DC-to-AC converter, the negative pole of the output of described regulator connects the earth, or described regulator is that the positive pole of output connects the negative pole of described First photovoltaic DC-to-AC converter by diode, the negative electrode of diode connects the negative pole of the input of described First photovoltaic DC-to-AC converter, the anode of diode connects the positive pole of the output of regulator, the negative pole of the output of described regulator connects the earth, or the positive pole of the output of described regulator connects the negative pole of the input of described First photovoltaic DC-to-AC converter by fuse, the negative pole of the output of described regulator connects the earth.
The third aspect, the application also provides a kind of regulator, and this circuit comprises:
The input of regulator gets access to grid, the isolating transformer input of described regulator gets access to grid, the isolating transformer of described regulator is output as the alternating voltage of isolation, AC/DC converting means is converted to high-voltage dc voltage by the isolation alternating voltage of described regulator, the positive pole of the output of described regulator connects the negative pole of described First photovoltaic DC-to-AC converter, and the negative pole of the output of described regulator connects the earth.
In conjunction with the third aspect, in the possible implementation of the first, the output of described regulator just by switch, connect the negative pole of described First photovoltaic DC-to-AC converter, the negative pole of the output of described regulator connects the earth, or described regulator is that the positive pole of output connects the negative pole of described First photovoltaic DC-to-AC converter by diode, the negative electrode of diode connects the negative pole of the input of described First photovoltaic DC-to-AC converter, the anode of diode connects the positive pole of the output of regulator, the negative pole of the output of described regulator connects the earth, or the positive pole of the output of described regulator connects the negative pole of the input of described First photovoltaic DC-to-AC converter by fuse, the negative pole of the output of described regulator connects the earth.
Accompanying drawing explanation
According to embodiment and accompanying drawing, the present invention is described in further detail below.
Fig. 1 induces attenuator circuit schematic diagram for the present patent application embodiment mono-provides the potential electromotive force of a kind of anti-multi-machine parallel connection photovoltaic generating system circuit.
Four kinds of earthing mode schematic diagrames of the regulator that Fig. 2 provides for the present patent application embodiment mono-.
Two photovoltaic DC-to-AC converters that Fig. 3 provides for the present patent application embodiment mono-schematic diagram that is connected in parallel.
The regulator schematic diagram that Fig. 4 provides for the present patent application embodiment bis-.
Embodiment
For the present invention is become apparent, hereby with preferred embodiment, and coordinate accompanying drawing to be described below in detail.
In the potential electromotive force induction attenuator circuit of a kind of anti-multi-machine parallel connection photovoltaic generating system of the present invention and regulator, N platform photovoltaic DC-to-AC converter is in parallel, and output AC electric current is also received same isolating transformer, by isolating transformer, alternating current is flowed to electrical network.By the negative pole of First photovoltaic DC-to-AC converter input being connect to the positive pole of the output of regulator, the minus earth of the output of regulator, and the input of the giving First photovoltaic DC-to-AC converter quantity that connects cell panel is greater than the quantity of input termination cell panel of other photovoltaic DC-to-AC converters of the quantity of the input termination cell panel of removing First photovoltaic DC-to-AC converter in N platform, make like this cathode voltage of input of First photovoltaic DC-to-AC converter all larger than the cathode voltage of the input of other photovoltaic DC-to-AC converters of all, thereby avoided the negative pole of the input of photovoltaic DC-to-AC converter to produce negative pressure to the earth.Also solved simultaneously in photovoltaic DC-to-AC converter circuit pure the problem of Ground leakage current, heightened the energy output of photovoltaic generating system.
Below in conjunction with accompanying drawing to of the present invention mainly realize principle, specific implementation method with and the effect that reaches be described in detail.
Embodiment mono-
Please refer to Fig. 1, the embodiment of the present application provides a kind of multi-machine parallel connection circuit, and this circuit comprises:
N platform photovoltaic DC-to-AC converter is in parallel, and the output of described N platform photovoltaic DC-to-AC converter connects the input of same isolating transformer, and the output of isolating transformer gets access to grid.The input of every photovoltaic DC-to-AC converter of described N platform photovoltaic DC-to-AC converter is connected at least one cell panel, and to photovoltaic DC-to-AC converter, input provides voltage to described at least one cell panel, and the output voltage of described at least one cell panel is identical.In described N platform photovoltaic DC-to-AC converter, only there is the negative pole of the input of First photovoltaic DC-to-AC converter to connect the positive pole of the output of regulator, the input of described voltage regulator gets access to grid, described voltage regulator is output as isolated high-voltage direct voltage, the output termination the earth of described regulator.Wherein N is integer, and N>1.
The quantity of the input termination cell panel of described First photovoltaic DC-to-AC converter is greater than in N platform photovoltaic DC-to-AC converter the quantity except the input termination cell panel of other photovoltaic DC-to-AC converters of First photovoltaic DC-to-AC converter.
Because the output voltage of every cell panel in the cell panel of every photovoltaic DC-to-AC converter input termination is identical, the input that is greater than other photovoltaic DC-to-AC converters due to the quantity of the input termination cell panel of First photovoltaic DC-to-AC converter connects the quantity of cell panel, so the bus Vbus1 of First photovoltaic DC-to-AC converter is larger than the busbar voltage Vbus2 of the input of second photovoltaic DC-to-AC converter of other photovoltaic DC-to-AC converter machines, be Vbus1>Vbus2. and the center line N1 of N photovoltaic DC-to-AC converter each photovoltaic DC-to-AC converter in parallel current potential in parallel equates, and the busbar voltage that the current potential of N1 line is 1/2nd adds the negative pole voltage to earth of the input of photovoltaic DC-to-AC converter.The neutral voltage Vn1=1/2Vbus1+PV1-of First photovoltaic DC-to-AC converter so, wherein PV1-is the input cathode voltage utterly of First photovoltaic DC-to-AC converter, the neutral voltage of second photovoltaic DC-to-AC converter is Vn2=1/2Vbus2+PV2-, and wherein PV2-is the input cathode voltage to earth of second photovoltaic DC-to-AC converter.Vn1=Vn2, have 1/2Vbus1+PV1-=1/2Vbus2+PV2-. because the input cathode of First photovoltaic DC-to-AC converter meets the output high-voltage DC power supply Udc of regulator, and Udc>0., PV1-=Udc.And Vbus1>Vbus2, so the input of the visible N platform of PV2->0. photovoltaic DC-to-AC converter connects high-voltage dc voltage over the ground, the negative pole of the input of all the other all photovoltaic DC-to-AC converters current potential over the ground is all greater than zero.And from avoided photovoltaic generating system cell panel high negative pressure over the ground, thereby there is anti-potential cell decay (PID) function, also avoided photovoltaic DC-to-AC converter leakage current over the ground simultaneously.
In specific implementation process, all the other photovoltaic DC-to-AC converters except First photovoltaic DC-to-AC converter in N platform photovoltaic DC-to-AC converter are referred to as to second photovoltaic DC-to-AC converter once for convenience of description, the quantity of second photovoltaic DC-to-AC converter is that the quantity of second photovoltaic DC-to-AC converter input termination cell panel of N-1. is A, A is integer, and the A>1. quantity of First photovoltaic DC-to-AC converter input termination cell panel is that A+B.B is integer, thereby and B>=1. guarantees that First photovoltaic DC-to-AC converter input termination cell panel quantity is greater than the second photovoltaic DC-to-AC converter input termination cell panel quantity.
Please refer to Fig. 2, the negative pole of First photovoltaic DC-to-AC converter connects the positive pole of regulator output, and the negative pole of regulator connects the earth.Also the input cathode of First photovoltaic DC-to-AC converter can be received to the positive pole of the output of regulator, the output termination the earth of regulator by fuse.Also the input cathode of First photovoltaic DC-to-AC converter can be connect to the positive pole of regulator by switch, the negative pole of regulator connects the earth.Also the input cathode of First photovoltaic DC-to-AC converter can be connect to the output head anode of regulator by diode, the negative electrode of diode connects the negative pole of the input of First photovoltaic DC-to-AC converter, the anode of diode connects the positive pole of the output of regulator, and the negative pole of the output of regulator connects the earth.
N=2 take below as example, circuit of the present invention is described in detail.Please refer to Fig. 3, the input termination A piece cell panel of second photovoltaic DC-to-AC converter, the input termination A+1 piece cell panel of First photovoltaic DC-to-AC converter.The negative pole of the input of First photovoltaic DC-to-AC converter connects the output head anode of regulator, and the negative pole of output end of regulator connects the earth, and the output voltage of voltage regulator is Udc, Udc>0.The output of First photovoltaic DC-to-AC converter is in parallel and connect the input of isolating transformer in the output of second photovoltaic DC-to-AC converter, and the output of isolating transformer gets access to grid.The inside mid point above earth potential of First photovoltaic DC-to-AC converter is Vn1=1/2Vbus1+PV1-, and PV1-is the negative pole voltage to earth of the input of First photovoltaic DC-to-AC converter, PV1-=Udc.The inside mid point above earth potential of second photovoltaic DC-to-AC converter is that Vn2=1/2Vbus2+PV2-.PV2-is the voltage over the ground of negative pole of the input of second photovoltaic DC-to-AC converter.Because First photovoltaic DC-to-AC converter and second photovoltaic DC-to-AC converter are connected on same isolating transformer, so Vn1=Vn2=Vn, so, PV2-=1/2Vbus1-1/2Vus2+Udc, due to Vbus1>Vbus2, Udc>0, , PV2->0. visible, in 2 photovoltaic DC-to-AC converters, the input cathode of First photovoltaic DC-to-AC converter connects malleation voltage over the ground, , second photovoltaic DC-to-AC converter negative pole current potential is greater than zero, thereby avoided cell panel in photovoltaic generating system to form over the ground negative pressure, there is anti-potential electromotive force damping capacity, avoided photovoltaic DC-to-AC converter Ground leakage current simultaneously.
According to above-mentioned detailed description, those skilled in the art is according to the principle of above-described embodiment, and the clear circuit of knowing multi-machine parallel connection when N is arbitrary value, does not narrate one by one at this.
Below in conjunction with accompanying drawing to regulator of the present invention mainly realize principle, specific implementation method with and the effect that reaches be described in detail.
Embodiment bis-
The input of regulator gets access to grid, and electrical network is the input of AC/DC high-frequency isolation power supply, and the output of isolation of high frequency switch power supply is high-voltage dc voltage, and the positive pole of regulator connects the negative pole of First photovoltaic DC-to-AC converter, the output of regulator
Connect the earth.Or the input of regulator gets access to grid, electrical network is the input of isolating transformer, and the output termination AC/DC converting means of isolating transformer, makes voltage conversion circuit be output as high voltage direct current.The positive pole of the output of regulator connects the negative pole of First photovoltaic DC-to-AC converter, and the negative pole of the output of regulator connects the earth.
Claims (6)
1. the potential electromotive force induction of an anti-multi-machine parallel connection photovoltaic generating system attenuator circuit, is characterized in that, described circuit comprises:
N platform photovoltaic DC-to-AC converter is in parallel, the input of the same isolating transformer of output termination of described N platform photovoltaic DC-to-AC converter, and in described N platform photovoltaic DC-to-AC converter, every photovoltaic DC-to-AC converter input connects at least one cell panel; Described at least one cell panel provides input voltage for photovoltaic DC-to-AC converter, in described at least one cell panel, the output voltage of every cell panel is identical, in described N platform photovoltaic DC-to-AC converter, only have the input cathode of First photovoltaic DC-to-AC converter to connect the output termination of regulator anodal, the negative pole of output end of regulator connects the earth; Wherein N is integer, N>=2; The quantity of the input termination cell panel of described First photovoltaic DC-to-AC converter is greater than the quantity of the input disconnecting cell panel of other all photovoltaic DC-to-AC converters of removing First photovoltaic DC-to-AC converter in described N platform inverter.
2. circuit as claimed in claim 1, it is characterized in that, in described N platform inverter, the quantity of the photovoltaic DC-to-AC converter input termination cell panel except First photovoltaic DC-to-AC converter is A, the quantity of the input termination cell panel of described First photovoltaic DC-to-AC converter is A+B, and wherein A is integer, A>0, B is integer, B>0.
3. circuit as claimed in claim 1, is characterized in that, the input cathode of described First photovoltaic DC-to-AC converter connects the output head anode of regulator, and the negative pole of output end of voltage controller power source connects the earth; Or the input cathode of described First photovoltaic DC-to-AC converter connects regulator output head anode by fuse, the negative pole of the output of regulator connects the earth; Or the input cathode of described First photovoltaic DC-to-AC converter connects the positive pole of the output of regulator by diode, the negative electrode of diode connects the negative pole of the input of described First photovoltaic DC-to-AC converter, the anode of diode connects the output head anode of regulator, and the negative pole of regulator connects the earth; Or the negative pole of the input of described First photovoltaic DC-to-AC converter connects the positive pole of the output of regulator by switch, the negative pole of the input of First photovoltaic DC-to-AC converter described in the input termination of switch, the output head anode of the output termination regulator of switch, the negative pole of regulator connects the earth.
4. regulator as claimed in claim 1, is characterized in that, described circuit comprises:
The input of regulator gets access to grid, the input of the AC/DC high-frequency isolation power supply of described regulator gets access to grid, the output of described regulator is high voltage direct current, the positive pole of the output of described regulator connects the negative pole of described First photovoltaic DC-to-AC converter, and the negative pole of the output of described regulator connects the earth.
5. the regulator as described in right 1 requirement, is characterized in that, described circuit comprises:
The input of regulator gets access to grid, the isolating transformer input of described regulator gets access to grid, the isolating transformer of described regulator is output as the alternating voltage of isolation, AC/DC converting means is converted to high-voltage dc voltage by the isolation alternating voltage of described regulator, the positive pole of the output of described regulator connects the negative pole of described First photovoltaic DC-to-AC converter, and the negative pole of the output of described regulator connects the earth.
6. as described in right 4 or 5 requirements, install, it is characterized in that, the positive pole of the output of described regulator connects the negative pole of the input of First photovoltaic DC-to-AC converter, the negative pole of the output of regulator connects the earth, or the positive pole of the output of described regulator connects the negative pole of the input of First photovoltaic DC-to-AC converter by fuse, the negative pole of the output of regulator connects the earth, or the positive pole of the output of described regulator connects the negative pole of the input of First photovoltaic DC-to-AC converter by diode, the negative electrode of diode connects the negative pole of the input of First photovoltaic DC-to-AC converter, the anode of diode connects the positive pole of the output of voltage regulator, the negative pole of the output of regulator connects the earth, or the positive pole of the output of described regulator connects the input of switch, the negative pole of the input of the output termination First photovoltaic DC-to-AC converter of switch, the negative pole of the output of regulator connects the earth.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410413916.XA CN104201713A (en) | 2014-08-21 | 2014-08-21 | Potential induced degradation resistance circuit for multi-machine parallel connection photovoltaic power generation system and pressure regulating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410413916.XA CN104201713A (en) | 2014-08-21 | 2014-08-21 | Potential induced degradation resistance circuit for multi-machine parallel connection photovoltaic power generation system and pressure regulating device |
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| CN104201713A true CN104201713A (en) | 2014-12-10 |
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| CN201410413916.XA Pending CN104201713A (en) | 2014-08-21 | 2014-08-21 | Potential induced degradation resistance circuit for multi-machine parallel connection photovoltaic power generation system and pressure regulating device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105119321A (en) * | 2015-09-29 | 2015-12-02 | 广西比迪光电科技工程有限责任公司 | System capable of increasing generating capacity of photovoltaic power generation system |
| CN106033895A (en) * | 2015-03-16 | 2016-10-19 | 台达电子工业股份有限公司 | Inverter device having function of eliminating electric-potential-induced attenuation and solar energy system having function of eliminating electric-potential-induced attenuation |
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| CN203166494U (en) * | 2013-03-26 | 2013-08-28 | 阳光电源（上海）有限公司 | Device for solving potential induced degradation |
| CN203218893U (en) * | 2013-04-24 | 2013-09-25 | 阳光电源（上海）有限公司 | Device for solving potential induction attenuation |
| CN103701150A (en) * | 2013-12-26 | 2014-04-02 | 华为技术有限公司 | Multi-unit parallel circuit, power supply system and voltage regulation method |
| CN204258328U (en) * | 2014-08-21 | 2015-04-08 | 山亿新能源股份有限公司 | A kind of potential potential induction attenuation circuit of anti-multi-machine parallel connection photovoltaic generating system and regulator |
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- 2014-08-21 CN CN201410413916.XA patent/CN104201713A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203166494U (en) * | 2013-03-26 | 2013-08-28 | 阳光电源（上海）有限公司 | Device for solving potential induced degradation |
| CN203218893U (en) * | 2013-04-24 | 2013-09-25 | 阳光电源（上海）有限公司 | Device for solving potential induction attenuation |
| CN103701150A (en) * | 2013-12-26 | 2014-04-02 | 华为技术有限公司 | Multi-unit parallel circuit, power supply system and voltage regulation method |
| CN204258328U (en) * | 2014-08-21 | 2015-04-08 | 山亿新能源股份有限公司 | A kind of potential potential induction attenuation circuit of anti-multi-machine parallel connection photovoltaic generating system and regulator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106033895A (en) * | 2015-03-16 | 2016-10-19 | 台达电子工业股份有限公司 | Inverter device having function of eliminating electric-potential-induced attenuation and solar energy system having function of eliminating electric-potential-induced attenuation |
| CN105119321A (en) * | 2015-09-29 | 2015-12-02 | 广西比迪光电科技工程有限责任公司 | System capable of increasing generating capacity of photovoltaic power generation system |
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