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Rotor Time Constant Estimation for Induction Motor Direct Vector Control  

Bae Sang-Jun (경북대 대학원 전기공학과)
Choi Jong-Woo (경북대 전자전기공학부)
Kim Heung-Geun (경북대 전자전기공학부)
Lee Hong-Hee (울산대 전기전자 및 자동화공학부)
Chun Tae-Won (울산대 전기전자 및 자동화공학부)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.9, no.5, 2004 , pp. 413-419 More about this Journal
Abstract
In the induction motor direct vector control system using the Gopinath model flux observer, the deterioration of the dynamic response due to the detuned rotor time constant is investigated. To solve this problem, the on line estimation algorithm of the rotor time constant using model reference adaptive control is proposed. The effect of the motor parameter variation on the rotor time constant estimation is analyzed through experiment. The estimation error due to the parameter variation converges within 5%. Thus applying the proposed algorithm to the Gopinath model flux observer, the robust direct vector control system of the induction motor to the parameter variation can be implemented.
Keywords
Rotor Time Constant; Gopinath Model Flux Observer; Direct Vector Control; Model Reference Adaptive Control;
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