Preliminary analysis of eddy current and iron loss in magnetic gear in electric vehicle

Mohd Firdaus Mohd Ab Halim, Erwan Sulaiman, Mahyuzie Jenal, Raja Nor Firdaus Kashfi Raja Othman, Syed Muhammad Naufal Syed Othman

Abstract


The inclusion of a high energy density permanent magnet into magnetic gear improves the machine's torque density. However, it also contributes to eddy current loss, especially in a high-speed application such in electric vehicle. In this paper, the losses from eddy current and iron loss are investigated on concentric magnetic gear (CMG). Torque multiplier CMG is designed with 8/3 gear ratio for this study. Iron loss and eddy current loss are compared and discussed. Based on this study, eddy current loss contributes to almost 96% of the total loss. This finding is hoped to direct the researcher to focus more on reducing loss associated with eddy current loss.

Keywords


eddy current loss; efficiency; iron loss; magnetic gear; torque;

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DOI: http://doi.org/10.11591/ijece.v12i2.pp1161-1167

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International Journal of Electrical and Computer Engineering (IJECE)
p-ISSN 2088-8708, e-ISSN 2722-2578