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分析了注入式混合型有源电力滤波器的工作原理,从几种常见的输出滤波器的传递函数出发,利用MATLAB建立输出滤波器参数的波动对补偿性能影响的仿真模型,发现LRC型输出滤波器在较低的开关频率下,获得比LCL和LC滤波器更优异的性能。综合考虑,选取了LRC型滤波器进行设计,最后利用PSIM建立装有LRC型输出滤波器的注入式混合型有源电力滤波器仿真模型。仿真结果表明:对于注入式混合型有源电力滤波器采用LRC型输出滤波器有很好的滤波效果。
The working principle of the hybrid active power filter is analyzed. Based on the transfer functions of several common output filters, a simulation model of the influence of the output filter parameters on the compensation performance is established by MATLAB. It is found that the LRC output filter At lower switching frequencies, the device achieves better performance than LCL and LC filters. Taking LRC filter into consideration, the simulation model of hybrid active power filter with LRC output filter is built by PSIM. The simulation results show that the LRC type output filter has good filtering effect for the hybrid active power filter.