一种基于混合型磁链观测器的异步电机直接转矩控制

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Abstract Because of the voltage drop on asynchronous motor stator resistance, the voltage vector chosen by traditional 6-sector direct torque control (DTC) method appears to be invalid around the sector divide. Through 12-sector method, this problem was solved and control reliability was improved. Considering the features of voltage and current model flux observer, a novel hybrid model which suits for high sampling frequency was presented, and the frequency response function (FRF) was deduced. From the FRF and simulation, comparison of the voltage, current and hybrid model observer performance was implemented, while the motor parameters varied. Finally, the effectiveness of the proposed hybrid model is proved by the experimental results.

Received: 10 September 2014 Published: 29 June 2015

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TM315

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	Articles by authors
	Liu Yang
	Shi Li-ming
	Zhao Lu
	Li Yao-hua

Cite this article:

Liu Yang,Shi Li-ming,Zhao Lu等. Direct Torque Control of Asynchronous Motor Based on Hybrid Flux Observer[J]. Transactions of China Electrotechnical Society, 2015, 30(10): 157-163.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I10/157

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