基于PSIM的光伏发电最大功率跟踪技术仿真

摘要

利用PSIM软件设计了光伏发电最大功率跟踪（MPPT）仿真模型。该模型功率主电路采用BUCK变换器，检测电路用于测量光伏电池板电压和电流信号，控制电路使用动态链接库（DLL）模块控制主电路开关管通断，编译后的DLL文件直接与PSIM链接进行仿真。该模型可快速有效地跟踪光强、温度变化，具有建模简单、仿真速度快等优点。%Maximum power point tracking (MPPT)simulation model of photovoltaic power generation sys-tem was designed using PSIM software,in MPPT simulation model,the power circuits adopt BUCK convert-er,the signal detecting circuits measured voltage and current values of photovoltaic cells,the control cir-cuits used dynamic link library (DLL)module to control the power switch module,the compiled DLL files could be linked to PSIM directly.The model could track irradiation and temperature rapidly,and it had the advantages of modeling simple and quick simulation.