延时对有源滤波器补偿性能的影响

Influences of Time Delay to the Compensative Performance of Shunt Active Power Filter

采用有源滤波技术对舰船大容量独立交流电力系统的电能质量进行综合治理已成为必然趋势。本文以三相三线并联型有源滤波器为研究对象,分析了造成并联型有源滤波器补偿电流响应时间延迟的成因,推算了不同阶次谐波的补偿失效率和时间延迟的关系,提出了针对补偿延时的超前拍PI控制策略。仿真和样机实验证实了理论的正确性。

There is an irresistible trend to conduct comprehensive treatment on power quality of high capacity independent vessel AC power system by using active power filter technology.Three-phase three-wire shunt active power filter is studied in this paper.The reason which causes of responding time delay on compensation current of shunt active power filter is analyzed.The relationships between compensation failure rate of various order harmonics and time delay are extrapolated and the advanced PI control strategy to alleviate this problem is provided.Simulation and experiment of prototype proves that the theory is correct.