Abstract
Because of the special cell structure and apparent backsheet material of bifacial photovoltaic (PV) module, the rear side of bifacial PV module can generate power under certain irradiance condition as well as the front side. The power generation of bifacial PV module is obviously higher than that of conventional PV module. With the rapid development of PV technology, the market share of bifacial modules improves every year. To effectively evaluate the electrical performance of bifacial module, current-voltage(I-V) characteristic of three bifacial modules were tested according to three different test standards. The rear irradiance driven power gain yield (BiFi) and temperature coefficients of current, voltage and power were tested under different irradiance condition. From the results of performance test, it is confirmed that for bifacial PV module, the performance test results with different test standards are not the same. The BiFi of bifacial module under different irradiance condition is almost the same. The temperature coefficients of front side and rear side are different. In the actual performance test, appropriate coefficients should be selected for data correction according to IEC 60891.
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