CN102544212A - Power attenuation recovery method of solar component - Google Patents
Power attenuation recovery method of solar component Download PDFInfo
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- CN102544212A CN102544212A CN2011104608008A CN201110460800A CN102544212A CN 102544212 A CN102544212 A CN 102544212A CN 2011104608008 A CN2011104608008 A CN 2011104608008A CN 201110460800 A CN201110460800 A CN 201110460800A CN 102544212 A CN102544212 A CN 102544212A
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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
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Abstract
The invention relates to a power attenuation recovery method of a solar component. The solar component is formed by connecting n cells, wherein n is not less than 4; (1) a positive pole of the first cell of the solar component is led out for being used as an A+ end, a negative pole of the n/2th integral cell of the solar component is led out for being used as an A- end, the positive pole of the n/2+1th integral cell of the solar component is led out for being used as a B+ end, and an electrode of the nth cell of the solar component is led out for being used as a B- end; (2) during normal working, the A- end and the B+ end are in short-circuit connection, the A+ end is taken as a positive pole output end of the solar component, and the B- end is taken as a negative pole output end of the solar component; and (3) when power attenuation recovery needs to be performed on the solar component, the A+ end and the B- end are in short circuit connection, the A- end is taken as the negative pole output end of the solar component, and the B+ end is taken as the positive pole output end of the solar component. According to the power attenuation recovery method disclosed by the invention, the power attenuation recovery of the solar component can be realized.
Description
Technical field
The present invention relates to a kind of solar components power attenuation restoration methods.
Background technology
PID (Potential Induced Degradation) phenomenon or surface polarization (surface polarization) are that the efficient sun electricity generation module in the present photovoltaic industry causes power attenuation because solar components exists over the ground malleation or negative pressure to cause that the assembly surface electric charge gathers when in system, using in system, in the short time as some months or the rapid unusually reduction phenomenon of emergent power one or two years.
Early stage sunpower has set forth exclusive surface polarization (surface polarization) phenomenon of back electrode battery and has produced principle and prevent and treat method in " The Surface Polarization Effect in High-Efficiency Silicon Solar Cells " document, to be high positive voltage over the ground be that it produces the basic reason of polarization phenomena to battery in the assembly.In the recent period solon company announced its study for a long period of time PID phenomenon Study report " Potential Induced Degradation of solar cells and panels " its mainly set forth the principle that crystal silicon PID produces through experimental data, to be higher negative voltage over the ground be that it produces the basic reason of polarization phenomena to battery in the assembly.
Patent 0260673,0196535 " preventing harmful polarization of solar cells " and CN101133500 " prevent be harmful to solar energy polarization " set forth assembly some prevent the mode that polarizes: 1, add one deck silica dioxide coating with holes between battery surface or passivation layer and the battery; Form a turning circuit and prevent harmful polarization, the method increases the battery manufacturing cost and has reduced the efficient of battery to a certain extent.2, some solutions that it is mainly recommended in the system are as 1) use assembly voltage to earth in the resistance change system; 2) inverter of plus earth module and isolating transformer, this quadrat method make assembly have limitation and band isolating transformer in use, have reduced system effectiveness.
Summary of the invention
The technical problem that the present invention will solve is: overcome the deficiency of prior art, a kind of solar components power attenuation restoration methods is provided, simply and effectively solar components is carried out power attenuation and recover.
The technical solution adopted for the present invention to solve the technical problems is: a kind of solar components power attenuation restoration methods, and described solar components is connected to form by n piece battery, wherein n >=4;
(1) solar components is broken off from n/2 integer piece; The positive pole of the 1st battery of solar components is drawn as A+ and is held; The negative pole of the n/2 integer piece battery of solar components is drawn as A-and is held; The positive pole of the n/2+1 integer piece battery of solar components is drawn the end as B+, and the electrode of the n piece battery of solar components is drawn the end as B-, and the positive pole of the negative pole of the n/2 integer piece battery of solar components and the n/2+1 integer piece battery of solar components breaks off;
(2) during operate as normal, the A-end is connected with the B+ terminal shortcircuit, A+ holds the cathode output end as solar components, and B-holds the cathode output end as solar components;
(3) in the time of need carrying out the power attenuation recovery to solar components, the A+ end is connected with the B-terminal shortcircuit, the A-end is as the cathode output end of solar components, and the B+ end is as the cathode output end of solar components.
The invention has the beneficial effects as follows: when solar components moved in system, assembly can present the voltage of plus or minus over the ground, and for same type component, solar components can cause PID power attenuation phenomenon to solar components during over the ground for negative voltage; Solar components can protect solar components to avoid the influence of PID power attenuation during over the ground for positive voltage, and can play the effect that power attenuation recovers for the solar components assembly that has produced.During operate as normal, the A-end is connected with the B+ terminal shortcircuit, and the A+ end is as the cathode output end of solar components, and the B-end is as the cathode output end of solar components; In the component string from just the order to negative is identical with originally, that is: 1 ..., n/2; N/2+1 ..., n, solar components are negative voltage over the ground; In the time of need carrying out the power attenuation recovery to solar components, A+ and B-short circuit, A-and B+ output; The order of component string is: n/2+1 ..., n; 1 ..., n/2; Solar components is positive voltage over the ground, realizes the recovery of solar components component power decay through changing the solar components voltage to earth, and is effectively simple.
Description of drawings
Below in conjunction with accompanying drawing the present invention is further specified.
Fig. 1 is the lead line schematic diagram of solar components among the present invention;
Embodiment
Combine accompanying drawing that the present invention is further described now.These accompanying drawings are the sketch map of simplification basic structure of the present invention only are described in a schematic way, so it only shows the formation relevant with the present invention.
A kind of solar components power attenuation restoration methods, described solar components is connected to form by n piece battery, wherein n >=4;
(1) as shown in Figure 1; Solar components is broken off from n/2 integer piece; The positive pole of the 1st battery of solar components is drawn the end as A+, and the negative pole of the n/2 integer piece battery of solar components is drawn the end as A-, and the positive pole of the n/2+1 integer piece battery of solar components is drawn as B+ and held; The electrode of the n piece battery of solar components is drawn the end as B-, and the positive pole of the negative pole of the n/2 integer piece battery of solar components and the n/2+1 integer piece battery of solar components breaks off;
(2) during operate as normal, the A-end is connected with the B+ terminal shortcircuit, A+ holds the cathode output end as solar components, and B-holds the cathode output end as solar components;
(3) in the time of need carrying out the power attenuation recovery to solar components, the A+ end is connected with the B-terminal shortcircuit, the A-end is as the cathode output end of solar components, and the B+ end is as the cathode output end of solar components.
During operate as normal, the A-end is connected with the B+ terminal shortcircuit, and the A+ end is as the cathode output end of solar components, and the B-end is as the cathode output end of solar components; In the component string from just the order to negative is identical with originally, that is: 1 ..., n/2; N/2+1 ..., n, solar components are negative voltage over the ground; In the time of need carrying out the power attenuation recovery to solar components, A+ and B-short circuit, A-and B+ output; The order of component string is: n/2+1 ..., n; 1 ..., n/2; Solar components is positive voltage over the ground, realizes the recovery of solar components component power decay through changing the solar components voltage to earth, and is effectively simple.
Therefore regularly change solar components above earth potential can play preventive and therapeutic effect to the PID phenomenon, and like common P type substrate polycrystalline solar assembly, solar components is negative voltage over the ground during operate as normal; In the time of need carrying out the power attenuation recovery to solar components, through changing the connected mode between the battery, solar components is positive voltage over the ground, can realize the recovery of solar components component power decay.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must confirm its technical scope according to the claim scope.
Claims (1)
1. solar components power attenuation restoration methods, described solar components is connected to form by n piece battery, and n >=4 wherein is characterized in that:
(1) solar components is broken off from n/2 integer piece; The positive pole of the 1st battery of solar components is drawn as A+ and is held; The negative pole of the n/2 integer piece battery of solar components is drawn as A-and is held; The positive pole of the n/2+1 integer piece battery of solar components is drawn the end as B+, and the electrode of the n piece battery of solar components is drawn the end as B-, and the positive pole of the negative pole of the n/2 integer piece battery of solar components and the n/2+1 integer piece battery of solar components breaks off;
(2) during operate as normal, the A-end is connected with the B+ terminal shortcircuit, A+ holds the cathode output end as solar components, and B-holds the cathode output end as solar components;
(3) in the time of need carrying out the power attenuation recovery to solar components, the A+ end is connected with the B-terminal shortcircuit, the A-end is as the cathode output end of solar components, and the B+ end is as the cathode output end of solar components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104608008A CN102544212A (en) | 2011-12-31 | 2011-12-31 | Power attenuation recovery method of solar component |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104608008A CN102544212A (en) | 2011-12-31 | 2011-12-31 | Power attenuation recovery method of solar component |
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| CN102544212A true CN102544212A (en) | 2012-07-04 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779873A (en) * | 2012-07-05 | 2012-11-14 | 合肥海润光伏科技有限公司 | Photovoltaic component output cycle inverter |
| CN103137730A (en) * | 2013-02-01 | 2013-06-05 | 常州亿晶光电科技有限公司 | Method and structure for avoiding or reducing crystalline silicon photovoltaic assembly potential induction damping |
| CN105379107A (en) * | 2013-05-27 | 2016-03-02 | 伏科技有限公司 | Regenerating and/or preventing defects in a solar panel installation |
| US10090754B2 (en) | 2016-08-29 | 2018-10-02 | Lsis Co., Ltd. | Photovoltaic inverter |
| WO2019120208A1 (en) * | 2017-12-20 | 2019-06-27 | 华为技术有限公司 | Degradation recovery method and apparatus for photovoltaic module in photovoltaic power station |
-
2011
- 2011-12-31 CN CN2011104608008A patent/CN102544212A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102779873A (en) * | 2012-07-05 | 2012-11-14 | 合肥海润光伏科技有限公司 | Photovoltaic component output cycle inverter |
| CN103137730A (en) * | 2013-02-01 | 2013-06-05 | 常州亿晶光电科技有限公司 | Method and structure for avoiding or reducing crystalline silicon photovoltaic assembly potential induction damping |
| CN103137730B (en) * | 2013-02-01 | 2015-05-20 | 常州亿晶光电科技有限公司 | Method and structure for avoiding or reducing crystalline silicon photovoltaic assembly potential induction damping |
| CN105379107A (en) * | 2013-05-27 | 2016-03-02 | 伏科技有限公司 | Regenerating and/or preventing defects in a solar panel installation |
| CN105379107B (en) * | 2013-05-27 | 2018-09-14 | 伏科技有限公司 | The defect repair of solar panels in solar pane arrangement |
| US10090754B2 (en) | 2016-08-29 | 2018-10-02 | Lsis Co., Ltd. | Photovoltaic inverter |
| WO2019120208A1 (en) * | 2017-12-20 | 2019-06-27 | 华为技术有限公司 | Degradation recovery method and apparatus for photovoltaic module in photovoltaic power station |
| US11329600B2 (en) | 2017-12-20 | 2022-05-10 | Huawei Digital Power Technologies Co., Ltd. | Method and apparatus for rectifying degradation of photovoltaic module in photovoltaic power station |
| US11632075B2 (en) | 2017-12-20 | 2023-04-18 | Huawei Digital Power Technologies Co., Ltd. | Method and apparatus for rectifying degradation of photovoltaic module in photovoltaic power system |
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Application publication date: 20120704 |