基于自抗扰技术的无轴承异步电动机SVM-DTC控制系统  

Direct Torque Control System Using Space Vector Modulation for Bearingless Induction Motor Based on Active Disturbance Rejection Controller Technology

作　　者：朱大敏[1] 刘贤兴[1] 

机构地区：[1]江苏大学,江苏镇江212013

出　　处：《微特电机》2010年第11期54-57,共4页Small & Special Electrical Machines

基　　金：国家自然科学基金(60674095);江苏省自然科学基金(BK2008233)

摘　　要：针对无轴承异步电动机非线性强耦合的特点,结合自抗扰控制器技术、空间电压矢量调制技术和直接转矩控制方案,用自抗扰控制器替代传统的PID控制器,设计了基于自抗扰技术的无轴承异步电动机空间电压矢量调制的直接转矩控制系统(SVM-DTC),解决了速度超调问题,通过转子磁链辨识,间接获得定子磁链、气隙磁链和转速的辨识。仿真结果表明,采用自抗扰控制器能有效减少超调量,提高响应速度,系统具有较好的动态性能,对负载扰动、电动机参数变化都有较强的鲁棒性。Based on the characteristics of non-linear and strong coupling of bearingless induction motors,combined with active disturbance rejection controller（ADRC） technology,space voltage vector modulation and direct torque control（SVM-DTC） scheme,a SVM-DTC control system was designed with ADRC technology for bearingless induction motors.It employed active disturbance rejection controller other than the traditional PID controller to reduce the speed overshoot and identify the stator flux,air-gap flux and speed indirectly through the rotor flux identification.Simulation results demonstrate that the ADRC can effectively reduce the overshoot and increase response speed,and that the system has a good dynamic performance and strong robustness to load disturbance and motor parameter variation.

关 键 词：无轴承异步电动机 自抗扰控制器 空间电压矢量 直接转矩控制 磁链转速辨识 

分 类 号：TM343[电气工程—电机]