动态电压恢复器H_2鲁棒控制设计  

Robust H_2 Control for A Dynamic Voltage Restorer

作　　者：邓攀[1] A.Benchaib G.DePreville 

机构地区：[1]上海交通大学机械与动力工程学院机电控制研究所,上海200240 [2]法国巴黎Areva输配电集团,法国巴黎91300

出　　处：《机电一体化》2010年第8期18-23,51,共7页Mechatronics

摘　　要：动态电压恢复器(dynamic voltage restorer,DVR),作为一种主要的客户端电压补偿设备,在保护敏感负载免受电压凹陷影响方面具有良好的效果。针对已有DVR控制系统在控制效果方面存在的一些缺陷,将H_2最优鲁棒控制技术设计应用于DVR控制系统中,提出了含有反馈增益结构的新型H_2控制器。在建立了三相一体的DVR仿真模型,以及对H_2控制原理和实现算法进行深入阐述的基础上,给出了与DVR状态空间模型匹配的H_2控制构架图及其状态空间实现方法。Matlab/Simulink的仿真结果显示,采用H_2控制技术的DVR闭环系统具有高响应速度及稳定度,并且其控制算法相比传统PID算法也更为精确。The dynamic voltage restorer （DVR） as an electronics based custom device, is used to protect sensitive loads from the voltage sags in the power distribution system. Regarding to the disadvantages of existing DVR control system, an optimal H2 control approach has been developed on this device to regulate de voltage compensation process. Based on the modelling of three-phase DVR and the research of H2 control theory together with its corresponding algorithm, a states feedback control system has been designed for this DVR. Simulation results in Matlab/Simulink indicated that with integration of a H2 controller, the DVR can correct the voltage sags with a high performance of regulation and robustness. The control precision of DVR has also been improved.

关 键 词：动态电压恢复器 电能质量 电压凹陷 H2鲁棒控制 

分 类 号：TM761.12[电气工程—电力系统及自动化]