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Apparent permeability of electrical steel under PWM magnetisation

Moses, Anthony John, Leicht, Jeanete and Anderson, Philip Ian 2006. Apparent permeability of electrical steel under PWM magnetisation. Journal of Magnetism and Magnetic Materials 304 (2) , e543-e545. 10.1016/j.jmmm.2006.02.150

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Abstract

In recent years much attention has been paid to material performance under pulse width modulation (PWM) excitation conditions, which is of increasing importance to motor applications particularly in energy efficient variable speed drive systems. It is well known that in general, losses increase significantly with reducing modulation index, the increase depending on parameters such as silicon contents, thickness and grain size. The effect of the PWM waveform on permeability has attracted little attention until now. So in this paper its influence on the permeability of electrical steel is analysed and characterised. A prediction approach based on the permeability under sine wave excitation and total harmonic distortion is introduced which results in errors below 10% for non-electrical steel at 1.5 T.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Uncontrolled Keywords: Magnetic loss; Pulse width modulation; Permeability; Hysteresis loss
Additional Information: Proceedings of the 17th International Symposium on Soft Magnetic Materials
Publisher: Elsevier
ISSN: 0304-8853
Last Modified: 04 Jun 2017 05:07
URI: http://orca.cf.ac.uk/id/eprint/48600

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