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Energies
Volume 11
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10.3390/en11102601
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Article

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

by
Myeong-Hwan Hwang
1,2,
Jong-Ho Han
1,
Dong-Hyun Kim
1 and
Hyun-Rok Cha
1,*
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
Submission received: 7 September 2018 / Revised: 26 September 2018 / Accepted: 27 September 2018 / Published: 29 September 2018
(This article belongs to the Section F: Electrical Engineering)
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Abstract

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.
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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MDPI and ACS Style

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. https://doi.org/10.3390/en11102601

AMA Style

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(10):2601. https://doi.org/10.3390/en11102601

Chicago/Turabian Style

Hwang, Myeong-Hwan, Jong-Ho Han, Dong-Hyun Kim, and Hyun-Rok Cha. 2018. "Design and Analysis of Rotor Shapes for IPM Motors in EV Power Traction Platforms" Energies 11, no. 10: 2601. https://doi.org/10.3390/en11102601

APA Style

Hwang, M.-H., Han, J.-H., Kim, D.-H., & Cha, H.-R. (2018). Design and Analysis of Rotor Shapes for IPM Motors in EV Power Traction Platforms. Energies, 11(10), 2601. https://doi.org/10.3390/en11102601

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