【摘 要】
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Electrical capacitance which forms between the solar cells and the grounded frame of solar modules due to the module layout is an undesirable effect and thus termed parasitic capacitance.This parasiti
【出 处】
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SNEC 第十届(2016)国际太阳能产业及光伏工程(上海)论坛
论文部分内容阅读
Electrical capacitance which forms between the solar cells and the grounded frame of solar modules due to the module layout is an undesirable effect and thus termed parasitic capacitance.This parasitic capacitance causes a capacitive leakage current,which can lead to a short disconnection of inverters from the grid,depending on the inverter topology and environmental conditions.Module parasitic capacitance is therefore considered as an important factor that affects the modules insulation characteristics alongside the insulation resistance.In the first part of the work,different measuring methods were used to determine the parasitic capacitance of solar modules.In a second step,climatic tests were performed to investigate the effects of environmental stresses on the parasitic capacitance.Based on the test results and observations,the applied measuring methods as well as the feasibility of an in situ monitoring of moisture ingress into solar modules by means of capacitance measurement were evaluated.
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