基于最小电压矢量偏差的永磁同步电机直接转矩控制

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Abstract Direct torque control(DTC) for PMSM has many advantages such as simple structures, fast dynamic performance and robust on motor parameters, however, one of the main drawbacks is the significant torque and flux ripples. In this paper, the change law of torque and electromagnetic torque and stator flux is analyzed and a novel DTC method which still employs single vector is proposed to reduce the torque and flux ripples. The proposed method figures out the reference output voltage vector according to the controlling demands of torque and flux. Targeted the reference vector, the output voltage vector of two-level inverter which has minimum deviation with the reference is selected. Both the hardware experiments and software simulations prove the validity of the proposed method.

Key words： PMSM DTC torque and flux ripples minimum vector deviation

Received: 30 July 2014 Published: 08 September 2015

PACS:

TM315

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	Articles by authors
	Chen Wei
	Ai Shichao
	Gu Xin

Cite this article:

Chen Wei,Ai Shichao,Gu Xin. Direct Torque Control for Permanent Magnet Synchronous Motor Based on Minimum Vector Deviation[J]. Transactions of China Electrotechnical Society, 2015, 30(14): 116-121.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I14/116

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