新型无功负序谐波PI无静差解耦控制策略  

A Novel Zero Steady-state Error Decoupled PI Control Strategy for Reactive Power and Negative Sequence and Harmonic Current

作　　者：许胜[1] 

机构地区：[1]泰州师范高等专科学校,江苏泰州225300

出　　处：《电力电子技术》2011年第10期102-104,共3页Power Electronics

基　　金：中央高校基本科研业务费专项资金资助(JUSRP11022)~~

摘　　要：提出了一种新型无功、负序及谐波电流的PI无静差解耦控制方法。该方法在某一种补偿电流分量对应的同步旋转坐标系(SFR)中,通过简单算法变换,消除由其他补偿电流分量形成的交流扰动,获得该补偿电流分量的直流量,实现对该补偿电流指令的PI无静差跟踪控制。实验结果表明,采用该方法后,装置实现了对无功或负序或某次谐波电流的单独PI无静差跟踪补偿和对上述各电流的综合PI无静差解耦补偿。相比较于其他SFR中的补偿方法,该方法算法简单,易于工程实现,控制精度高,且实时性强。A novel zero steady-state error decoupled PI control method for reactive power and negative sequence and harmonic current is proposed.In order to obtain the DC value formed of some kind of compensation current component in its corresponding synchronous reference frame （SFR）, this method eliminates the AC disturbance variable established from the other compensation current components by a brief algorithm so as to realize the zero steady-tate error PI current control.The experimental results show that using this method,the device can realize the zero steadystate error PI current tracing control for a separate current component of reactive power or negative sequence or harmonic,and achieve the integrated zero steady-state error PI control for the current components above.To comparison to other compensation methods in SFR,this method has the characteristics of simple algorithm,high control precision, high utilization.

关 键 词：解耦控制 无功负序谐波 无静差控制 

分 类 号：TM571[电气工程—电器]