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On-Load Motor Parameter Identification Using Univariate Dynamic Encoding Algorithm for Searches

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4 Author(s)
Jong-Wook Kim ; Dept. of Electron. Eng., Dong-A Univ., Busan ; Taegyu Kim ; Youngsu Park ; Sang Woo Kim

Parameter identification of an induction motor has long been studied either for vector control or fault diagnosis. This paper addresses parameter identification of an induction motor under on-load operation. For estimating electrical and mechanical parameters in the motor model from the on-load data, unmeasured initial states and load torque profile have to be also estimated for state evaluation. Since gradient of cost function for the auxiliary variables are hard to be derived, direct optimization methods that rely on computational capability should be employed. In this paper, the univariate dynamic encoding algorithm for searches (uDEAS), recently developed by the authors, is applied to the identification of whole unknown variables with measured voltage, current, and velocity data. Profiles of motor parameters estimated with uDEAS are reasonable, and estimation time is 2 s on average, which is quite fast as compared with other direct optimization methods.

Published in:

Energy Conversion, IEEE Transactions on  (Volume:23 ,  Issue: 3 )

Date of Publication:

Sept. 2008

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