有源电力滤波器电流环高性能补偿控制策略分析

文章对传统电流环PI控制器检测误差进行了详细的理论分析，指出了检测负载侧谐波电流的局限性，提出了一种电源侧电流前馈补偿的控制器。该控制器基本上可以做到谐波指令的无静差跟踪，具有良好的补偿性能，克服了传统检测负载侧谐波电流时PT控制器的缺陷，而且具有传统检测负载侧谐波电流的灵活性，即使负载谐波电流高于有源电力滤波器的容量，也能够基本上无静差输出，具有一定的理论意义和工程应用价值。理论分析和仿真验证了此种新型控制策略的正确性和有效性。

Analysis of Current Loop High Performance Compensation Control Strategies for Active Power Filter

Three-phase shunt active power filter (APF) are often used to compensate the harmonic and reactive current derived from non-linear load. But many non-ideal factors, such as the limited bandwidth of output current loop and the time lag of signal sensing circuit and reference current generation etc, will deteriorate the compensation effect. Proportion-Integral (PI) controller cannot be used simply to control the output current without any steady error due to its limited current tracking capability. A novel ou...