Active power filters (APF) are widely used to reduce harmonics, compensate the reactive power, and improve the power factor due to its advantages of superior controllability, fast responding, small bulk and weight, and its achievements are more and more.

• 由于高可控性、快速响应、体积小、重量轻等优点,有源滤波器在抑制谐波、补偿无功、提高功率因数上得到广泛的应用,研究成果也越来越多。