有源滤波器滞环电流控制的矢量方法

提出了基于误差电流矢量和等效电源电压矢量的三相有源滤波器电流滞环控制的空间矢量模型，解决了滤波器的三相关联控制问题。利用模型中引入的误差六边形概念，将有源滤波器的空间矢量问题转化为平面解析问题，实现了逆变器状态的优化选择和控制，提高了系统的控制精度，降低了器件的开关频率。仿真结果验征了该方法的有效性。

A NOVEL PHASE-CORRELATING HYSTERESIS CURRENT CONTROL METHOD FOR ACTIVE POWER FILTER

This paper presents a method to solve the problem of phase-correlating control in the 3-phase 3-wire filter, in which a new vector model of active power filter for hysteresis current control is introduced based on the error current vector and equivalent source voltage vector. The proposed method turns general solution of rotating space vector problem into plane geometry question in a current error hexagon, and can conveniently select the best states and switching points. The effect of the method exists in the increasing of control precision and the decreasing of switching frequency. The validity of the method is confirmed by simulation results.