一种无电流检测的并联型有源电力滤波器

A Shunt Active Power Filter Without Current Detection

针对检测负载电流的并联型有源电力滤波器(SAPF)不能应用在负载电流不可检测的工业场合的问题,提出一种无电流检测的SAPF,对其工作原理进行理论分析,介绍了具体结构及其控制策略,讨论了此种APF的适用范围。为验证理论分析的正确性,进行了软件仿真,并研制了一台50 kVA的实验样机,进行了实验验证。仿真和实验结果表明所提出的无电流检测的SAPF具有很好的稳态补偿效果和较快的动态响应速度。

Aiming at the problem that shunt active power filter（SAPF） with detecting load current can＇t be applied into the no load current detection point industrial situation, a SAPF without current detection is proposed.The theoretical analysis of its operating principle, device configuration and control scheme are introduced and the sphere of application for this type APF is discussed.In order to verify the theoretical analysis, the software simulation is conducted and experi- mental verification is made on the developed experimental prototype with 50 kVA capacity.Simulation and experimental results show that the proposed non-current detection SAPF has good steady compensation performance and fast dynamic response speed.