【摘要】 分析了三相光伏并网逆变器的电路拓扑和系统的控制结构,在此基础上提出了同步旋转坐标系下基于PI控制的电流控制器设计方案。在MATLAB/SIMULINK环境下进行了系统建模与仿真,并构建了实验样机进行实验研究。仿真和实验结果验证了所提出控制方案的正确性,即采用PI控制可以提高系统的动态性能,实现对指令进行无静差跟踪。更多还原

【Abstract】 The topology and the control scheme of the three-phase grid connected inverter is analyzed in the paper.A design of PI current controller based on synchronous frame is also proposed.And the modeling and the simulation of the system based on MATLAB/SIMULINK environment are presented too.The experimental equipment has also been constructed.The experiment verifies that the scheme can work well,the PI current controller can improve the dynamic quality of the system and can help to realize the non steady-state error for tracking the instruction.更多还原