In order to suppress the natural resonant frequency of the LCL grid-connected inverter system and eliminate the grid-connected current harmonics caused by the grid voltage distortion caused by nonlinear loads,the natural resonance of the LCL is reduced by capacitive current feed-back active damping control,and in order to suppress the influence of the grid voltage on the grid-connected current,the grid voltage feedforward control strategy is used to compare various feed-forward control effects,so as to obtain high-quality grid-connected current.MATLAB/Simulink simulations are used to verify the effectiveness of the feed-forward control strategy.
关键词
电网电压前馈/电容电流反馈/SOGI-PLL
Key words
grid voltage feedforward/capacitor current feedback/SOGI-PLL
维普
万方数据