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An Accurate Inductance Profile Measurement Technique for Switched Reluctance Machines

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3 Author(s)
Peng Zhang ; Power Electronics and Energy Research Group, Concordia University, Montreal, Canada ; Pablo A. Cassani ; Sheldon S. Williamson

Accurate modeling of switched reluctance machines (SRMs) is necessary in order to achieve satisfactory control performance. Due to their highly nonlinear characteristics, the exact inductance profile for SRMs in one electrical period ought to be obtained. The purpose of this paper is to propose an accurate method to model the SRM magnetization characteristic, representing the accurate inductance profile, in order to achieve higher control performance. Furthermore, the innovative method proposed in this paper addresses a diverse way to minimize overall losses, compared to conventional methods. Instead of using a specific apparatus for measurement, the proposed method directly uses the saturation feature of the phase inductance. This paper discusses the advantages and improvements of the proposed method compared to conventional methods. Finally, the results computed by finite-element analysis are compared with the experimental results in terms of SRM magnetization characteristics.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:57 ,  Issue: 9 )