On the variation with flux and frequency of the core loss coefficients in electrical machines

Ionel, D.M., Popescu, M., Dellinger, S.J., Miller, T.J.E., Heideman, R.J. and McGilp, M.I. (2006) On the variation with flux and frequency of the core loss coefficients in electrical machines. IEEE Transactions on Industry Applications, 42(3), pp. 658-667. (doi: 10.1109/TIA.2006.872941)

Abstract

A model of core losses, in which the hysteresis coefficients are variable with the frequency and induction (flux density) and the eddy-current and excess loss coefficients are variable only with the induction, is proposed. A procedure for identifying the model coefficients from multifrequency Epstein tests is described, and examples are provided for three typical grades of non-grain-oriented laminated steel suitable for electric motor manufacturing. Over a wide range of frequencies between 20-400 Hz and inductions from 0.05 to 2 T, the new model yielded much lower errors for the specific core losses than conventional models. The applicability of the model for electric machine analysis is also discussed, and examples from an interior permanent-magnet and an induction motor are included.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Miller, Prof Timothy
• Authors: Ionel, D.M., Popescu, M., Dellinger, S.J., Miller, T.J.E., Heideman, R.J., and McGilp, M.I.
• Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• Research Group: SPEED
• Journal Name: IEEE Transactions on Industry Applications
• Publisher: Institute of Electrical and Electronics Engineers
• ISSN: 0093-9994
• Copyright Holders: Copyright © 2006 Institute of Electrical and Electronics Engineers
• First Published: First published in IEEE Transactions on Industry Applications 42(3):658-667
• Publisher Policy: Reproduced in accordance with the copyright policy of the publisher