有源电力滤波器的控制策略综述

随着电力电子装置的广泛应用,大量的谐波和无功电流注入电网,引起电网污染,造成电能质量问题日益严重.有源电力滤波器(active power filter,APF)是补偿电力系统谐波及无功功率的重要装置,其控制的实时性和准确性是实现有效补偿的一个关键.介绍了几种适合于有源电力滤波器的谐波电流检测方法和补偿电流控制策略的基本原理,进行了对比分析,并指出了它们各自的优缺点.控制策略的不断发展可使有源滤波器获得更好的性能和更广泛的应用.

Overviews of Control Strategy of Active Power Filter

With the wide application of power electronic equipments in power system,more harmonic and reactive current are poured into the power system,which cause power pollution and make the power quality problem increasingly serious.Active power filter(APF) is an important equipment to compensate harmonic and reactive current in power system and the key of the effective compensation lies in the real-time and accurate control.The fundamental principles of several detect methods of harmonic current and control strategies of compensate current were presented,on contrast analysis was carried,and the respective merit and demerit of these control strategies were pointed out.With the continuous development of the control strategy,active power filter will achieve higher performances and wider application.