一种基于转矩角的永磁同步电机直接转矩控制

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Abstract A novel direct torque control(DTC) strategy based on torque angle is introduced in the paper for the permanent magnet synchronous motors(PMSMs) used in electric vehicles. The limits of flux linkage and torque angle are also discussed in the paper. The proposed strategy is based on torque-angle control, and the amplitude and angle of output voltage vector are directly determined by torque and flux linkage close-loop regulators respectively. The output voltage vector is synthetized by space vector modulation(SVM). Real time observation of torque angle ensures motor working on the stable operation range. Besides, the strategy with simple structure is unaffected by the change of inductance parameters. Experiment results show that the proposed strategy has good suitability and strong robusticity.

Key words： Direct torque control torque angle permanent magnet synchronous motor space vector modulation electric vehicle

Received: 06 November 2012 Published: 25 March 2014

PACS:

TM301.2

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	Qiu Xin
	Huang Wenxin
	Yang Jianfei
	Bu Feifei

Cite this article:

Qiu Xin,Huang Wenxin,Yang Jianfei等. A Direct Torque Control Strategy Based on Torque Angle for Permanent Magnet Synchronous Motors[J]. Transactions of China Electrotechnical Society, 2013, 28(3): 56-62.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I3/56

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