基于简单占空比调节的异步电机直接转矩控制

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Abstract In order to solve the problems of high torque ripple and variable switching frequency in conventional direct torque controlled(DTC) induction motor drives, the existing literature have proposed some methods to reduce torque ripple by optimizing the duty ratio of the active vector. However, these methods are usually complicated and parameter dependent. After comparing three typical kinds of duty determination methods, this paper proposes a very simple but effective method to obtain the duty ratio. The proposed scheme is able to reduce the torque and flux ripples significantly while maintaining the simplicity and robustness of the conventional DTC at the most. Simulations and presented experimental results validate the effectiveness of the proposed schemes in this paper.

Key words： Induction motor ripple reduction duty ratio direct torque control

Received: 25 September 2013 Published: 23 March 2015

PACS:

TM343

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	Articles by authors
	Li Zhengxue
	Zhang Yongchang
	Li Zhengxi
	Ban Xiaojuan
	Yang Haitao

Cite this article:

Li Zhengxue,Zhang Yongchang,Li Zhengxi等. A Direct Torque Control Strategy of Induction Motor Drives with Simple Duty Ratio Regulator[J]. Transactions of China Electrotechnical Society, 2015, 30(1): 72-80.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I1/72

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