基于误差迭代PI和改进重复控制的APF补偿电流控制  

Compensation Current Control of APF Based on Error Iteration PI and Improved Repetitive Control

作　　者：徐群伟[1] 钟晓剑[1] 胡健[1] 陈国柱[1] 

机构地区：[1]浙江大学电气工程学院,浙江省杭州市310027

出　　处：《电力系统自动化》2015年第3期124-131,共8页Automation of Electric Power Systems

基　　金：国家自然科学基金资助项目(51177147);浙江省重点科技创新团队项目(2010R50021)~~

摘　　要：针对电网谐波污染日益严重的情况,为提高有源电力滤波器(APF)的稳态补偿精度和动态响应性能,从谐振控制器的角度出发,对传统重复控制进行改进,并针对控制对象优化得到最优重复控制参数。同时,为了克服重复控制延时一个周波响应的动态性能缺陷,提出了一种误差迭代比例—积分(PI)控制法,在提高系统动态响应速度的基础上尽可能保证稳态精度。最后,对重复控制的嵌入形式加以改进,通过设置指令前馈通道优化控制结构,得到了改进复合控制的优化结构,实验和仿真结果验证了所提出控制策略的准确性和有效性。In view of the increasingly serious situation of power grid harmonic pollution,the traditional repetitive control is improved from the perspective of the resonant controller to ameliorate the steady-state compensation accuracy and dynamic response performance of an active power filter （APF）.The optimal repetitive control parameters are obtained for the control object.In order to overcome the dynamic performance deficiency of one-cycle response delay in the repetitive control,an error iteration proportional-integral （PI）control is proposed for ensuring the steady-state accuracy as far as possible while improving the dynamic response speed.Finally,the embedded form of repetitive control is improved.By setting an order feed-forward channel,the structure of improved composite control is optimized.Experiment and simulation results have verified the accuracy and effectiveness of the control strategy proposed.

关 键 词：有源电力滤波器 谐振控制器 误差迭代比例-积分控制 改进重复控制 嵌入式结构 

分 类 号：TM761[电气工程—电力系统及自动化] TN713.8[电子电信—电路与系统]