To control the DC side capacitor voltage at an adequate value is an important link which guarantees the excellent compensation characteristics of Active Power Filter(APF).The paper bases on the instantaneous power balance of shunt active power filter AC side and DC side
discusses the change rule of DC capacitor average and fluctuant voltage
analyses their influence on the performance of shunt APF.In order to overcome the influence
a control method is proposed by injecting active current in the compensation current and enlarging the capacity of DC capacitor to control the DC capacitor voltage steadily.Lastly
simulation results are presented to verify the validity of the proposed control algorithm.
关键词
并联型单相有源电力滤波器直流侧电容电压控制电能质量
Keywords
Shunt single-phase active power filterDC side capacitor voltage controlpower quality