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Effects of carrier frequency of PWM inverter on electrical loss of interior permanent magnet motor

Yoshihiro Kawase (Department of Information Science, Gifu University, Gifu, Japan)
Tadashi Yamaguchi (Department of Information Science, Gifu University, Gifu, Japan)
Tomohiro Umemura (Department of Information Science, Gifu University, Gifu, Japan)
Yoshiyasu Shibayama (Department of Information Science, Gifu University, Gifu, Japan)
Koji Hanaoka (Toyo Denki Seizo K.K., Yokohama, Japan)
Shingo Makishima (Toyo Denki Seizo K.K., Yokohama, Japan)
Kazuya Kishida (Toyo Denki Seizo K.K., Yokohama, Japan)

Abstract

Purpose

The purpose of this paper is to clarify the electrical loss of an interior permanent magnet (IPM) motor driven by the pulse‐width modulation (PWM) inverter with various carrier frequencies quantitatively.

Design/methodology/approach

An IPM motor driven by the PWM inverter was simulated using the three‐dimensional finite‐element method while changing various carrier frequencies of the PWM inverter. The calculated results are compared with the calculated results differing the number of permanent magnet division.

Findings

The eddy current loss in the permanent magnets decreases as the carrier frequency increases. In the case of low‐carrier frequency, the eddy current loss greatly decreases as the number of permanent magnet division increases. However, the effect of the eddy current loss decreases by the number of permanent magnet division as the carrier frequency increases.

Originality/value

The paper describes the electrical loss of an IPM motor driven by the PWM inverter with various carrier frequencies.

Keywords

Citation

Kawase, Y., Yamaguchi, T., Umemura, T., Shibayama, Y., Hanaoka, K., Makishima, S. and Kishida, K. (2010), "Effects of carrier frequency of PWM inverter on electrical loss of interior permanent magnet motor", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 29 No. 4, pp. 1097-1105. https://doi.org/10.1108/03321641011044514

Publisher

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Emerald Group Publishing Limited

Copyright © 2010, Emerald Group Publishing Limited

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