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.
王高林, 杨荣峰, 张家皖, 于泳, 马建雄, 蔡亮, 徐殿国. 一种感应电机转子时间常数MRAS的在线辨识方法[J]. 电工技术学报, 2012, 27(4): 48-53.
Wang Gaolin, Yang Rongfeng, Zhang Jiawan, Yu Yong, Ma Jianxiong, Cai Liang, Xu Dianguo. Rotor Time Constant On-Line Estimation of Induction Motors Based on MRAS. Transactions of China Electrotechnical Society, 2012, 27(4): 48-53.
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