一种光伏组件I-V特性曲线测试及参数辨识系统
An I-V characteristic curve measurement and parameters identification system for photovoltaic modules

提出一种光伏组件的I-V曲线扫描与参数识别系统. 该系统采用功率MOS管作为电子负载，通过控制MOS管的导通程度改变电子负载以实现I-V特性曲线扫描；采用新型布谷鸟-NM单纯形混合算法实现快速、精确的I-V曲线拟合，以提取准确光伏模型参数. 现场实验结果表明：该系统能够快速扫描光伏组件的I-V特性曲线，实现精确的模型参数辨识，具有较高的实际工程应用价值.
In order to test the working status of photovoltaic (PV) modules more efficiently and accurately，an I-V curve scanning and parameter identification system is proposed for PV modules in this paper. The system uses the MOS power transistor as the electronic load，changes the electronic load by controlling the conduction degree of the MOS power transistor to realize the I-V characteristic curve scanning，and proposes a novel cuckoo-NM simplex hybrid algorithm to realize the fast and accurate I-V curve fitting，so as to extract accurate PV model parameters. The experimental results show that the system can quickly scan the I-V characteristic curve of PV modules and realize accurate identification of model parameters，which has high practical engineering application value