级联H桥静止无功发生器的多变量自抗扰解耦控制  

Multiple-input Multiple-output Decoupling Control Schemes of Static Var Generator with Cascaded H-bridge Based on Active Disturbance Rejection Control

作　　者：于雁南[1] 杨荣峰[1] 严继池 武健[1] 徐殿国[1] 

机构地区：[1]哈尔滨工业大学电气工程系,黑龙江省哈尔滨市150001

出　　处：《中国电机工程学报》2016年第8期2233-2241,共9页Proceedings of the CSEE

基　　金：国家自然科学基金重点项目(51237002);国家自然科学基金青年项目(51407043)~~

摘　　要：提出一种dq坐标系下静止无功发生器的自抗扰解耦控制方法。首先针对静止无功发生器(static var generator,SVG)非线性、强耦合的特点,建立并设计基于自抗扰技术的多变量解耦控制系统。其次,为克服一般控制算法难以解决的高频振荡和滤波效果差的问题,设计最速控制综合函数作为跟踪微分器。另外设计自抗扰线性和非线性两种控制器,并与PI控制算法进行比较,通过Matlab仿真和样机实验,验证了所设计的基于非线性自抗扰技术的多变量解耦控制算法可实现SVG输出电流在dq轴下的解耦,使系统具有较快的动态响应和较强的鲁棒性及抗干扰性,尤其具有单参数调节和无超调的优良性能。This paper proposed an active disturbance rejection decoupling controller based on the dq coordination system applied on static var generator（SVG）. Firstly, for the non-linearity and strong-coupling of SVG, a multi-variables decoupling control system based on active disturbance rejection has been designed and built. Secondly, in order to deal with the high frequency oscillation and poor filtering characteristic which the most ordinary controlling strategy can hardly overcome, this paper introduced a tracking differentiator adopted the steepest control synthesis function as the controlling algorithm. Furthermore, a linear ADRC and a nonlinear ADRC have been designed and compared with the PI method independently. According to the result of Matlab simulations and prototype experiments, the output current of SVG can be decoupled in dq coordinates, and the faster dynamic response, robustness and anti-interference ability of the multi-variables decoupling control algorithm based on nonlinear ADRC proposed by this paper were proved, especially the advantages of single parameter trimming and overshot-free.

关 键 词：级联H桥 静止无功发生器 多变量解耦控制 自抗扰线性控制 自抗扰非线性控制 扩张状态观测器 

分 类 号：TM46[电气工程—电器]