新型混合有源滤波器控制策略研究

笔者针对谐波抑制的同时需要补偿大容量的无功功率的要求,分析和比较了目前常用的混合型有源电力滤波器的拓扑结构,采用了一种新颖的结构即新型串联谐振注入式混合有源滤波器,分析了其工作原理和传递函数。针对有源电力滤波器系统参考信号是以20ms为公倍周期的各次谐波的合成量这一特点,在传统PI算法的基础上根据参考电流是周期量这一特点提出了递推积分PI算法。利用PSIM仿真软件建立了仿真模型,理论和仿真实验都证明采用该控制算法可使注入型有源电力滤波器实现更精确的控制、更快的响应速度和更理想的补偿效果。

Study on New Hybrid Active Power Filter Control Strategy

This paper aims at the need for large compensation reactive power requirements when harmonic suppression.The current commonly used hybrid active power filter topology was analyzed and compared and a novel structure that is hybrid active power filter with injection structure was used.In accordance with the features of active power filter (APF)system that its reference signal is resultant quantity of each order of harmonic with the period of common multiple of 20 ms,and the quantity of its reference current is periodic,PI arithmetic of recursive integral was proposed on the base of traditional PI arithmetic.Then,the simulated model was built by PSIM simulation software.The theory and simulation result proves that HAPFIS can realize more precise control,faster response speed and more ideal compensate effect.