一种感应电机转子时间常数MRAS的在线辨识方法

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Abstract Field-oriented controlled induction motor drives may be detuned due to rotor time constant variation. A rotor time constant estimation method based on model reference adaptive system (MRAS) with reactive power model is presented. Convergence of the estimator is proved using the Popov’s super-stability theory. Since dead-time effect of inverter may induce reconstruction error of phase voltage and waveform distortion of stator current. A dead-time compensation strategy is presented to improve accuracy of model calculation. The stator current vector angle is obtained in synchronous rotating scheme. Then sensitivity of motor parameters to the model is analyzed. The feasibility of the proposed estimation is verified by experimental results of field-oriented vector controlled 11kW induction motor drive.

Key words： Induction motor rotor time constant estimation MRAS dead-time effect compensation sensitivity of parameter variation

Received: 14 April 2010 Published: 20 March 2014

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TM346

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	Articles by authors
	Wang Gaolin
	Yang Rongfeng
	Zhang Jiawan
	Yu Yong
	Ma Jianxiong
	Cai Liang
	Xu Dianguo

Cite this article:

Wang Gaolin,Yang Rongfeng,Zhang Jiawan等. Rotor Time Constant On-Line Estimation of Induction Motors Based on MRAS[J]. Transactions of China Electrotechnical Society, 2012, 27(4): 48-53.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I4/48

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