基于光伏电池双二极管模型等效电路,建立双面光伏组件输出特性模型,并针对遮挡状态下的多峰输出特性,提出多峰曲线的模型参数计算方法,研究不同遮挡状态对组件I-V曲线和模型参数的影响作用,分析组件各单元光伏电池遮挡数量和所受遮挡辐照度的变化对模型参数的影响规律。仿真和实验结果表明：模型参数计算结果和基于参数仿真得到的I-V曲线,具有较高准确度;提出的双面组件输出特性模型及其参数计算方法,可为双面光伏组件和组串的故障诊断提供技术支撑。
Abstract
Based on the equivalent circuit of the double-diode model of solar cells, a model for characterizing the output characteristics of bifacial photovoltaic modules has been established. A method for calculating model parameters has been proposed to address the multi-peak output characteristics under shading conditions. The effects of various shading conditions on the output characteristic curve and model parameters of the modules have been investigated. Additionally, the impacts of changes in shading intensity and the quantity of shaded cells on the model parameters have been analyzed. Simulation and experimental results demonstrate that the calculated model parameters and the output curves generated based on these parameters display remarkable accuracy. The established output characteristic model and its parameter calculation method are applicable to bifacial photovoltaic modules and strings, providing technical support for their fault diagnosis.
关键词
光伏电池 /
I-V特性 /
参数提取 /
双面光伏组件 /
双二极管模型
Key words
solar cells /
current-voltage characteristics /
parameter extraction /
bifacial photovoltaic modules /
double-diode model
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参考文献
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基金
浙江省基础公益研究计划（LGG22E070003）
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