矩阵变换器-永磁同步电机驱动系统滑模变结构控制  

Sliding Mode Variable Structure Control for Matrix Converter Fed Permanent Magnet Synchronous Motor Drive System

作　　者：史婷娜[1] 刘立志[1] 王慧敏[2] 宋鹏[1] 夏长亮[1] 

机构地区：[1]天津大学电气与自动化工程学院,天津300072 [2]天津工业大学电气与自动化学院,天津300160

出　　处：《电工技术学报》2010年第12期54-60,共7页Transactions of China Electrotechnical Society

基　　金：国家杰出青年科学基金(50825701);国家自然科学基金重点项目(51037004);国家自然科学基金(51077097);天津市应用基础及前沿技术研究计划重点项目(09JCZDJC23800)资助项目

摘　　要：为了抑制电网电压不平衡的影响,在矩阵变换器-永磁同步电机(MC-PMSM)驱动系统电流控制器设计中引入滑模变结构控制(SMC)策略,取代传统的比例-积分(PI)控制器。分析了电网电压不平衡对矩阵变换器(MC)输出电压的影响,并针对这种扰动和电机参数摄动,建立了永磁同步电机的解耦数学模型(扰动模型);在此基础上,选取积分滑模面和指数趋近律,设计滑模变结构电流控制器。实验结果表明,本文提出的滑模变结构控制策略有效地抑制了电网电压扰动情况下电机电流的波动,效果优于传统控制策略,且控制器参数调节简单,易于实现,具有较强的全局鲁棒性。A sliding mode variable structure current control（SMC） strategy is proposed for permanent magnet synchronous motor drives fed by matrix converters（MC-PMSM） to reduce the influence of grid voltage disturbances.A kind of disturbance is analyzed and its effects on output of matrix converter（MC） are derived.The decoupled model of PMSM is given,in which perturbation of input voltage and parameters of motor are considered.Based on the model,a SMC current controller is designed by using integral sliding mode surface and exponential approach law.Experimental results show that,the proposed strategy obtains reduced current and speed ripples under grid voltage disturbance without feed forward compensation which needs high precision voltage sensor.The structure of system is simple.Besides,it indicates global stability with easy tuning of controller parameters.

关 键 词：矩阵变换器 永磁同步电机 滑模变结构控制 电网扰动 

分 类 号：TM34[电气工程—电机]