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《Transducer and Microsystem Technologies》 2008-12
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Study on bearingless induction motors SVM-DTC system

LIU Xian-xing,MA Gui-fang,REN Hai-tao,FAN Chong-sheng,XU Qiu-li(School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,China)  
A direct torque control(DTC) system based on the space vector pulse wide modulation(SVM) is developed for the bearingless induction motor,which is multi-variable,nonlinear and high coupling system.The working principles of bearingless induction motor is briefly introduced.The mathematic model of bearingless induction motor is given.The whole control system is divided into rotary control system module and suspension control system module,the method of SVM is introduced into the rotary control system,SVM-DTC is analyzed and realized based on the method of the stator flux vector error;the control system of suspension module is based on PWM inverter in current tracking way.The experiment and simulation results show that the ripples of torque are dramatically reduced and the running performance is more stable,the whole control system has good dynamic and static performance.
【Fund】: 国家自然科学基金资助项目(60674095)
【CateGory Index】: TM343
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