同步旋转参考坐标系下的有源电力滤波器简单控制方法

A Simple Control Method of Active Power Filter in Synchronous Rotating Reference Orthogonal Coordinate System

提出了在同步旋转坐标系下的电压源型有源电力滤波器简单控制方法。该控制方法利用d-q变换将三相交流系统变换到旋转的正交坐标系,采用比例积分调节器控制有源电力滤波器的补偿电流,使其跟踪参考电流。该控制方法不需要对控制系统解耦,只需要1个d-q变换模块和1个低通滤波器即可较好地抑制系统电压波动,控制方法简单、鲁棒性高。仿真实验验证了文中理论分析的正确性和该控制系统的可行性。

A simple control method of voltage source shunt active power filters is proposed in the synchronous rotating reference orthogonal coordinate system. By use of d-q transformation, in this control method a three phase AC system is transformed into rotating orthogonal coordinate system and under the transformed coordinate system the compensating current of active power filter is controlled by PI controller to make it trace the reference current. Using the proposed control method, the control system need not to be decoupled and the system voltage fluctuation can be well controlled by only a d-q transformation module and a low-pass filter, so this method is simple and the control strategy possesses good robustness. The correctness of theoretical analysis and the feasibility of the proposed control system are verified by simulation experiments.