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Chen X.,Lianyungang Shenzhou New Energy Co. | He T.,Lianyungang Shenzhou New Energy Co. | Zhang C.,Lianyungang Shenzhou New Energy Co. | Zhang Z.,Shanghai Shenzhou New Energy Development Company | And 3 more authors.
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2015

Aiming at the I-V curve distortion in test of the high-efficiency/high capacitance n-type solar PV modules using flash I-V tester (pulse time of 5-20 ms), and the errors in the open circuit voltage, fill factor and maximum power induced by distortion, the key methods to solve this phenomenon was put forward by analyzing the influence factors of the I-V curve distortion according to the configuration and test mechanism of solar cell. N type solar PV modules, such as normal and IBC solar PV modules were tested using long pulse test, sectionalization test and some other methods. The influence of different test methods and solar cell capacitance on I-V test results was investigated. Finally, the accurate test method for I-V test was acquired, which solved the test problem of high-efficiency/highly capacitance N type solar PV modules. ©, 2015, Science Press. All right reserved. Source


He B.,Lianyungang Shenzhou New Energy Co. | Du J.,Lianyungang Shenzhou New Energy Co. | Wang H.,Lianyungang Shenzhou New Energy Co. | He T.,Lianyungang Shenzhou New Energy Co. | And 2 more authors.
Taiyangneng Xuebao/Acta Energiae Solaris Sinica | Year: 2015

Aiming on increasing the resistance of potential induced degradation properties for solar panels once exposed to external potentials in the field. This paper is focusing on P type silicon photovoltaic module, a test setup is presented for simulation of the potential induced degradation in the lab and the influence of different types of packaging materials and cell properties on potential induced degradation is demonstrated in order to reveal the key factor causing this phenomenon and the measures how to eliminate this factor. Finally, we made the anti-potential induced degradation modules by optimizing the solar cells and matching packaging materials, respectively, which in -1000 V, 85 ℃, 85% relative humidity and more than 1000 hours tests, the power degradation of this two types of modules are less than 3%, the phenomenon of potential induced degradation did not occur, both improved measures can eliminate the key factor that causing this phenomenon and significantly increase the module's anti-potential induced degradation performance. © 2015, Science Press. All right reserved. Source

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