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Open AccessArticle

Design and Analysis of Rotor Shapes for IPM Motors in EV Power Traction Platforms

1
EV Components & Materials R&D Group, Korea Institute of Industrial Technology, 6 Cheomdan-gwagiro 208 beon-gil, Buk-gu, Gwangju 61012, Korea
2
Department of Electrical Engineering, Chonnam National University, 77 Youngbong-ro, Buk-gu, Gwangju 61186, Korea
*
Author to whom correspondence should be addressed.
Energies 2018, 11(10), 2601; https://doi.org/10.3390/en11102601
Received: 7 September 2018 / Revised: 26 September 2018 / Accepted: 27 September 2018 / Published: 29 September 2018
(This article belongs to the Section Electrical Power and Energy System)
The recent increase in the use of permanent magnet rotor motors underlines the importance of designing a rotor with an interior permanent magnet (IPM) structure, high power, and high efficiency. This study analyzed the rotor shapes of IPM motors for electric vehicles. Five types of motor rotors for automobiles were analyzed, including two hybrid vehicles. In order to minimize the number of variables in the analysis, the size of the motor stators was fixed and only the rotor shapes were modified to compare torque, torque ripple, efficiency and back-electromotive voltage. When the motor properties were compared as a function of rotor shape, the rotor shape with the smallest magnet volume exhibited excellent results for torque, efficiency and torque ripple. View Full-Text
Keywords: traction motor; electric vehicle; interior permanent magnet; vehicle motor; electromagnetic field analysis; cogging torque traction motor; electric vehicle; interior permanent magnet; vehicle motor; electromagnetic field analysis; cogging torque
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Hwang, M.-H.; Han, J.-H.; Kim, D.-H.; Cha, H.-R. Design and Analysis of Rotor Shapes for IPM Motors in EV Power Traction Platforms. Energies 2018, 11, 2601.

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