光伏电池热电压动态模型及其仿真分析

为了降低光伏电池的建模难度,在光伏电池的等效电路模型基础上,对单二极管模型进行简化.为了兼顾简化模型的精确度,在考虑了引起模型误差的等效电阻等因素后,得出改进的单二极管串联模型——热电压模型,并且在热电压模型中加入环境修正参数,进而得到热电压动态模型.同时为验证该模型的有效性,在MATLAB/Simulink环境下建立...

Photovoltaic cell thermal voltage dynamics model and its simulation analysis

In order to reduce the modeling difficulty of photovoltaic cell,the single-diode model was simplified on the basis of the equivalent circuit model of photovoltaic cells.For the accuracy of the simplified model,an improved single-diode series model,the thermal voltage model,was obtained by considering the factors such as equivalent resistance that caused the modeling error.Then some correction parameters of environment were added into the thermal voltage model,so the thermal voltage dynamics model was obtained.Meanwhile,in order to verify the model validity,a practical project model was established in the MATLAB/Simulink environment.The simulation experiments and analysis of the output characteristics of photovoltaic cells were performed.4-parameter behavior model was compared for simulation results.The analysis results indicate that the thermal voltage dynamic model is more accurate than 4-parameter behavior model in higher irradiance circumstance and at higher temperature.