电测与仪表2011，Vol.48Issue(8)：33-37,41,6.
基于无差拍控制的无轴承异步电机DTC系统
Deadbeat Direct Torque Control of Bearingless Induction Motor
摘要
Abstract
This paper presents a discrete time deadbeat direct torque control for bearingless induction motor which is multi - variable, nonlinear and high coupling system, using space vector pulse width modulation. This modified direct torque control method calculated torque and flux control voltage based on Stator flux orientation Synchronous rotating frame which make the Torque and flux control achieving dynamic decoupling and solve the disturbance problems in torque loop and flux loop. Stator flux minuses the leakage of stator flux and gets the air - gap flux which is required by the suspension winding control system. It simplifies the flux observer and beneficial to the control of suspension sys tem. Simulation and experimental results show that the improved algorithms have a better performance in reducing dis turbances of torque, flux and Rotor displacement when compared with the tradition DTC method. Thus the suspending performance of the motor is improved.关键词
无轴承异步电机/直接转矩控制/离散时间无差拍Key words
bearingless induction motor/ direct torque control/ discrete time deadbeat分类
信息技术与安全科学引用本文复制引用
刘贤兴,周进伟..基于无差拍控制的无轴承异步电机DTC系统[J].电测与仪表,2011,48(8):33-37,41,6.基金项目
江苏省自然科学基金资助项目(BK2008233) （BK2008233）
