分数阶PI^λ控制的双闭环有源电力滤波器  

Double-closed-loop active power filter based on fractional-order PIλ controller

作　　者：刘建华[1] 张亚健[1] 朱蓓蓓[1] 李佳[1] 

机构地区：[1]中国矿业大学信息与电气工程学院,江苏徐州221000

出　　处：《电测与仪表》2016年第9期124-128,共5页Electrical Measurement & Instrumentation

摘　　要：有源电流滤波器(APF)是电网中谐波抑制的一个重要装置,针对传统PI控制器性能上的不足,提出分数阶PIλ的设计思路及方法,系统采用电流内环、电压外环的双闭环解耦直接电流控制策略,双环分数阶PIλ参数采用相位及幅值裕度法整定。仿真结果表明:基于分数阶控制器的APF有更好的动、静态性能和更强的鲁棒性,滤波效果也大为提高。在负载突变的情况下与整数阶系统对比,分数阶的PIλ可以更好的实现内环电流跟踪性和外环电压的稳定性。Active power filter （APF） is an important device in grid for harmonic suppression. This paper proposed the new design ideas and methods of fractional-order PIλ controller to compensate the deficiency of traditional PIλ in per- formance. A direct current decoupling control strategy based on double closed loop including current of inner-loop and the voltage of outer-loop is used in the system, and the fractional PIλ controller of the double loop uses amplitude and phase margin method to tune the parameters of Kp, and K1. The simulation results show that the APF based on frac- tional-order PIλ controller has a better dynamic and static performance and a stronger robustness, at the same time, the effect of filtering becomes better. Compared with the integer order system in mutation load condition, the factional order PI controller can do better to track the current of inner loop and steady the voltage of outer loop.

关 键 词：APF 分数阶PIλ 双环控制 鲁棒性 

分 类 号：TM464[电气工程—电器]