一种电流型光伏模拟器的分析和设计

Analysis and Design of a Current Controlled Photovoltaic Simulator

光伏模拟器是用于光伏产品实验与测试的可以模拟光伏阵列输出特性的电源。因为光伏模拟器工作时候级联光伏逆变器,而光伏逆变器的输入阻抗特性直接影响着模拟器的输出特性,在某些条件下甚至会导致其工作不稳定。论文在小信号模型下分析了光伏逆变器对光伏模拟器的影响,并给出了光伏模拟器的设计要点。设计出一种光伏模拟器控制系统,实验结果表明,所设计的光伏模拟器能够准确、快速地模拟光伏阵列特性,可以作为光伏逆变器的研发和测试电源。

Since the photovoltaic simulator works cascading photovoltaic inverter, the input impedance of the inverter could change the characteristic of the simulator. The influence of the photovoltaic inverter on photovoltaic simulator is analyzed based on the small signal model for the purpose of improving the performance of the photovoltaic simulator. Then a PV simulator is designed. The experimental results show the availability of the designed PV simulator.