IEEJ Transactions on Industry Applications
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
Q-Axis Flux-Based Sensorless Vector Control of Induction Motor Taking into Account Iron Loss
Mineo TsujiShuo ChenToshihiro KaiShin-ichi Hamasaki
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2006 Volume 126 Issue 12 Pages 1645-1651


This paper presents a sensorless vector control system for induction motors by taking into account iron loss, in which a flux-observer-based method is applied. Since the flux observer is constructed in a synchronously rotating reference frame with respect to the rotor flux of a current model and the iron loss resistance of parallel exiting circuit is used, the proposed system is very simple and the compensation of iron loss related to the operating frequency is directly realized while calculating rotor fluxes and slip frequency. The accuracies of estimated torque and speed are improved. The effectiveness of the proposed system has been verified by digital simulation and experimentation.

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© 2006 by the Institute of Electrical Engineers of Japan
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