基于改进闭环磁链观测器的感应电机无速度矢量控制

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Abstract In the speed sensorless vector control system of induction machine, accurate flux and speed information is very important. In this paper, the closed-loop flux observer which combines voltage model and current model is improved. It can obtain accurate magnitude and angle of the rotor flux and it can run in generating mode without speed information. On the basis of model reference adaptive system(MRAS) theory, it realizes the estimation of motor speed with the improved closed-loop flux observer as the reference model and current model as the adaptive model. Finally, the improved flux observer is used in a rotor field oriented vector control system and the feasibility of the proposed scheme is verified on the DSP experiment platform.

Key words： Improved close-loop flux observer speed sensorless generating mode MRAS vector control

Received: 26 April 2012 Published: 25 March 2014

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TM343+.3

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I3/148

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