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

Mohd Firdaus Mohd Ab Halim (Universiti Tun Hussein Onn Malaysia)
Erwan Sulaiman (Universiti Tun Hussein Onn Malaysia)
Mahyuzie Jenal (Universiti Tun Hussein Onn Malaysia)
Raja Nor Firdaus Kashfi Raja Othman (Universiti Teknikal Malaysia Melaka)
Syed Muhammad Naufal Syed Othman (Universiti Tun Hussein Onn Malaysia)

International Journal of Electrical and Computer Engineering
Vol 12, No 2: April 2022

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.