Study on Shunt Active Power Filter with Improved Control Method

Keywords—SAPF, improved control method, Ip-Iq current detection method , repetitive control, PI control, harmonic compensation Abstract.In order to improve power quality and ensure stable operation of power system, shunt active power filter (SAPF) is widely used o filter out harmonics. This paper proposed an improved control method for SAPF. The whole improved control strategy could be divided into two parts: IpIq current detection method to obtain compensation current reference value, and repetitive control combined with PI control to generate PWM pulse to control SAPF to deliver compensation current. The MATLAB simulation results show that SAPF with the proposed control method has good harmonic compensation performance.

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