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2010 Chinese Control and Decision Conference

作者： Liu Xianxing,Wang Weiran Department of Electrical and Information Engineering Jiangsu University Zhenjiang,Jiangsu Province,China

＜正＞In low-speed,direct torque control has such problems,like inevitable serious ripples in flux,disorder of the switching frequency,and *** discrete space vector modulation（DSVM） with direct torque control（DTC） for bearingless induction motor torque *** the multi-torque hysteresis comparator to increase the number of target vectors,and reduce the torque *** fix the duty ratio,it can not obtain the expectant *** paper introduces the duty ratio control in DSVM,improves the process of vector modulation,so we get a system which has advantages of simple stricture,fast response, and wide speed *** the end check this system,certified the system can restrain torque ripple,reduce cunent harmonics significantly in low-speed

关键词： bearingless induction motor discrete space vector modulation direct torque control low-speed improvements duty ratio control

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The SVM-DTC System of the bearingless induction motor Based on Model Reference Adaptive

The SVM-DTC System of the Bearingless Induction Motor Based ...

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第三十届中国控制会议

作者： SUN Yuxin,MAO Yanqing,LIU Xianxing,WANG Zhengqi School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,P.R.China

＜正＞Considering the need of speed sensorless operation for bearingless induction motor,the model reference adaptive method which takes reactive power as reference quantity is used to identify speed for the SVM-DTC system of the bearingless induction *** method eliminates the influences of pure integration and rotor *** results show that model reference adaptive control using reactive power as reference quantity can realize the stable suspension and rotation without speed sensor for the bearingless induction motor under the condition of heavy load *** speed recognition has high accuracy,and the whole control system has good static and dynamic performance.

关键词： bearingless induction motor Model reference adaptive Space vector modulation Speed sensorless

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Air-gap-flux Oriented Optimized Control of bearingless induction motor

Air-gap-flux Oriented Optimized Control of Bearingless Induc...

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第三十届中国控制会议

作者： LIU Xianxing,ZHU Bin,ZHENG Jingwen,WANG Zhengqi School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,P.R.China

＜正＞To solve the problem of rotor unstable suspension which suffers from the influence of rotor resistance variation in air-gap-flux oriented control system for the bearingless induction motors,a rotor resistance online identification technology based on the suspension control loop is researched,and the air-gap-flux oriented optimized control strategy based on rotor resistance online identification is *** further improve the static and dynamic system performance,a fuzzy PI speed controller based on fuzzy control theory is designed to revise the parameter of PI *** Simulation results show the efficiency of the proposed air-gap-flux oriented optimized control strategy.

关键词： bearingless induction motor Online Identification Air-Gap-Flux Oriented Fuzzy Control

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Nonlinear Decoupling Control of the bearingless induction motors Based on the Airgap motor Flux Orientation

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Chinese Journal of Aeronautics 2002年第1期15卷 38-43页

作者：邓智泉张宏全王晓琳严仰光 Department of Electrical Engineering Institute of Automatic Control Nanjing University of Aeronautics and Astronautics Nanjing 210016 China

The bearingless induction motor, which combines the inductionmotor and magnetic bearing is a strongly coupled complicatednonlinear system; the decoupling control of the electromag- net toqueand readial levitation force is the base of the stable operation ofthe benaringless motor. In this paper, the air-gap motor fluxoriented vector control is proposed to realize the decoupling controlof this nonlinear system even in the transient case based on thelevitation principle. Simulations show the stable suspension and goodperformance of the proposed algorithm.

关键词： bearingless induction motor airgap motor flux oriented vector control decoupling control

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维普期刊数据库

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An Improved Rotor Flux Oriented Control System of bearingless induction motors

An Improved Rotor Flux Oriented Control System of Bearingles...

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2010 Chinese Control and Decision Conference

作者： Zhengqi Wang~1,Xianxing Liu~2 1.School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China 2.School of Electrical and Information Engineering,Jiangsu University,Zhenjiang 212013,Jiangsu Province,China

＜正＞In a rotor flux oriented control system of bearingless induction motors,we usually ignore the rotor currents generated by radial position control *** will change the direction and magnitude of radial force.A novel rotor flux oriented control system,which compensates the delay and direction error in radial force generation,is *** efficacy of the proposed control system is established by simulation.

关键词： bearingless induction motor rotor flux oriented control radial force

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