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Stator Flux Control Scheme for Permanent Magnet Synchronous Motor Torque Predictive Control

ZHU Hao,XIAO Xi,LI Yong-dong (Department of Electrical Engineering,Tsinghua University,Haidian District,Beijing 100084,China)  
Comparing to conventional direct torque control scheme (DTC),predictive direct torque control algorithm can effectively improve the control accuracy of motor torque and stator flux. Direct torque control focuses mainly on torque control performance. Due to the approximation in state flux analysis,there might be great deviation in flux control,which will influence motor performance. A new stator flux control scheme is proposed,and the incremental part of stator flux is recalculated. Simulation and experiment results show that the proposed method achieves more accurate stator flux control performance without influence torque control. The overall performance of the motor is improved.
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