基于数据手册的任意辐照和温度下光伏电池模型参数提取
收稿日期: 2016-09-26
修回日期: 2016-10-18
网络出版日期: 2016-12-28
基金资助
佛山市院市合作项目（2014HK100051）；
广州市创新平台与共享项目（201509010018）；
广东省协同创新与平台环境建设项目（2014B040404002）
Parameter Extraction of Photovoltaic Cell Model under Different Irradiance and Temperature Based on Manufacture Datasheets
Received date: 2016-09-26
Revised date: 2016-10-18
Online published: 2016-12-28
基于光伏电池数据手册提取光伏电池模型参数，常利用参数的半经验公式求取任意工况下的模型参数，但半经验公式仅为近似公式，将引入较大误差。文中提出一种任意工况下的光伏电池单二极管5参数等效电路模型参数提取方法。该方法利用光伏电池数据手册提供的I-V曲线关键点数据，通过短路电流温度系数和开路电压温度系数求得任意工况下的关键点电流、电压，针对关键点列写方程组求解参数，从而得出任意辐照和温度下的光伏电池I-V特性。以高效单晶硅电池在多种工况下的测量数据为例，进行光伏电池模型参数提取和I-V曲线计算。结果表明，与利用参数半经验公式求取任意工况下参数的方法相比，该方法具有更高的准确度，在所有工况下均方根误差（RMSE）均小于5%。
黄 磊 , 张继元 , 舒 杰 , 崔 琼 , 吴志锋 , 丁建宁 . 基于数据手册的任意辐照和温度下光伏电池模型参数提取[J]. 新能源进展, 2016 , 4(6) : 468 -474 . DOI: 10.3969/j.issn.2095-560X.2016.06.007
Parameter extraction of photovoltaic cell model based on manufacture datasheets often uses parameter semi-empirical equations to obtain parameters under different conditions. These semi-empirical equations are approximate formulas and can increase model error. This paper proposes a parameter extraction method for 5-parameter single-diode model of photovoltaic cell under different irradiances and temperatures. It uses key-point data of I-V curve in manufacture datasheets to compute key-point current and voltage under different conditions by applying temperature coefficients of short circuit current and open circuit voltage. Based on the key-point data under certain conditions, the model parameters and I-V curve can be obtained by solving the proposed equation set. The proposed method was tested on high-efficiency monocrystalline silicon solar cell for parameter extraction and I-V curve computation. Experiment and simulation results demonstrate that the proposed method outperforms methods using semi-empirical equations to obtain parameters under different conditions, and the root mean square error (RMSE) values were less than 5% under all test conditions.
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