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Time Constant Estimation of Induction Motor rotor using MRAS Fuzzy Control  

Lee Jung-Chul (순천대 대학원 전기공학과)
Lee Hong-Gyun (순천대 대학원 전기공학과)
Chung Dong-Hwa (순천대 정보통신공학부)
Cha Young-Doo ((주)태성계전)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.10, no.2, 2005 , pp. 155-161 More about this Journal
Abstract
This paper presents time a constant estimation of induction motor using MRAS(model reference adaptive system) fuzzy control. The rotor time constant is enabled from the estimation of rotor flux, which has two methods. One is to estimate it based on the stator current and the other is to integrate motor terminal voltage. If the parameters are correct, these two methods must yield the same results. But, for the case where the rotor time constant is over or under estimated, the two rotor nut estimation have different angles. Furthermore their angular positions are related to the polarity of rotor time constant estimation error. Based on these observation, this paper develops a rotor time constant update algorithm using fuzzy control. This paper shows the theoretical analysis as well as the simulation results to verify the effectiveness of the new method.
Keywords
Induction Motor Drive; Fuzzy Control; MRAS; Time Constant Estimation;
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