基于模糊滑模变结构控制的动态电压恢复器控制策略  

A novel control strategy of dynamic voltage restorer based on fuzzy sliding mode variable structure control

作　　者：师维[1] 周卫平[1] 吴正国[1] 

机构地区：[1]海军工程大学电气工程学院,湖北武汉430033

出　　处：《舰船科学技术》2014年第4期82-86,共5页Ship Science and Technology

基　　金：国家自然科学基金资助项目(51207164)

摘　　要：动态电压恢复器(DVR)是保障电力系统电能质量经济有效的可行方案。本文在研究动态电压恢复器的电网电压前馈控制加负载电压与电容电流双闭环反馈控制相结合的复合控制策略的基础上,分析反馈控制中传统PI控制以及模糊控制的不足。经过理论分析提出基于模糊滑模变结构的控制方法。仿真结果表明,该方法使DVR有良好的动静态性能,并且较为理想地消除了传统滑模变控制的抖动现象。Dynamic voltage restorer （DVR） is a practicable and economical way to ensure the energy quality of power system. Under the study of the control strategy that combine grid voltage feed-forward control with the load voltage and capacitor current double closed-loop feedback control, the traditional proportion integration （PI） controller and fuzzy controller in feedback control is analyzed, a novel control strategy based on fuzzy sliding mode variable structure control is proposed. The theoretical analysis and the simulation results show that the proposed control strategy has excellent dynamic and static performance, eliminates the buffeting problem in traditional sliding model control.

关 键 词：动态电压恢复器 模糊控制 滑模控制 电压跌落 

分 类 号：TP18[自动化与计算机技术—控制理论与控制工程]