于槟华,龚仁喜,郭柏佑,汪洋,肖助力.一种改进的有源滤波器电流跟踪控制策略[J].电测与仪表,2015,52(24):. YU Bin-hua,GONG Ren-xi,KUO Po-yo,WANG Yang,XIAO Zhu-li.Current Tracking Control Scheme for Active Power Filter Based on Improved Double Hysteresis SVPWM[J].Electrical Measurement & Instrumentation,2015,52(24):.
一种改进的有源滤波器电流跟踪控制策略
Current Tracking Control Scheme for Active Power Filter Based on Improved Double Hysteresis SVPWM
Aiming at the problems about which the compensating current can not track the instruction current in the active power filter under the condition with the current error outside the outer loop in the conditional double hysteresis control method , a new method for voltage space vector and double hysteresis current tracking control is proposed. The loop width of the outer hysteresis comparator is dynamically adjusted on line by utilizing a fuzzy controller, thus reducing the high-order harmonics effectively. Compared with the traditional double hysteresis method, the proposed method can reduce the high-order harmonic components and switching frequency more effectively, improve tracking precision, enhance the robustness and raise the efficiency of APF remarkably. The results obtained by the simulation experiments verify the feasibility and effectiveness of the method.
