有源滤波器在d,q坐标系下的PI-模糊谐振控制  

A Method of PI and Fuzzy-resonant Control for APF in d,q Frame

作　　者：罗朝旭[1] 粟梅[1] 孙尧[1] 谢众玉[1] 

机构地区：[1]中南大学,信息科学与工程学院,湖南长沙410083

出　　处：《电力电子技术》2011年第9期90-92,共3页Power Electronics

基　　金：国家高技术研究发展计划(863计划)课题(2009AA05Z209)~~

摘　　要：有源电力滤波器(APF)被认为将代替传统LC无源滤波器,用来治理线路上非线性负载及开关器件产生的谐波和无功电流。APF为消除谐波,逆变器必须根据指令输出补偿电流,而谐波电流随时间快速振荡变化,因此电流控制器对谐波电流的跟踪能力决定了APF的性能高低。在此分析了并联型APF的电流控制数学模型,针对并联型APF提出一种简单有效的电流跟踪控制方案。在d,q坐标系下,比例积分(PI)控制器用来消除基波电流跟踪的稳态误差,与其并联的模糊谐振控制器可有选择地对特定次谐波进行无差跟踪。Active power filter（APF） is recognized as a substitute for classical passive LC filter in eliminating the pow-er line harmonics and reactive current due to nonlinear loads and switching devices.For eliminating harmonic cur-rents with APF,the inverter must be commanded to output compensating currents which are time varing with rapid vi-brations.Therefore,the tracking capability of the currents controller of the inverter dominates the performance of the APF.This article analyzes the current control model of the parallel active power filter,and proposes a simple and effi-cient control scheme for the current tracking control of shunt APF.In the d,q stationary frame,the proportion inte-gral controller is used to eliminate the steady current tracking error of fundment current,and the fuzzy-resonant con-troller in parallel is used to compensate selective harmonic current without steady error.

关 键 词：有源电力滤波器 电流跟踪 比例积分控制器 模糊谐振控制器 

分 类 号：TN713[电子电信—电路与系统]