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High efficiency control for PMSM based on power observation

Published:2015-06-10 author:ZHANG Xing-hao，ZHANG Wei Browse: 3527 Check PDF documents

High efficiency control for PMSM based on power observation

ZHANG Xing-hao，ZHANG Wei

（College of Electrical Engineering，Zhejiang University，Hangzhou 310027，China）

Abstract：Aiming at solving the problems of poor stability and low efficiency of the PMSM with V/f control，the high efficiency control

method based on power observation was investigated. After the analysis of the speed variation and the low efficiency during the steady

state，the observer based on active power and reactive power was established. A method was presented to achieve the stable control based

on active power observer and MTPA control strategy based on reactive power observer. The proposed method based on power observation

was evaluated on Matlab/Simulink，the experiment based on a SPM motor was tested. The experimental results indicate that the proposed

method is stable and efficient for the PMSM with V/f control method。

Key words：PMSM；V/f control；power observation；damping loop；MTPA

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