TY - GEN
T1 - Comparative Design of High-Torque Density Permanent Magnet Vernier Machines for in-Wheel Direct Drive Applications
AU - Yu, Yanlei
AU - Chen, Zhi
AU - Chai, Feng
AU - Pei, Yulong
AU - Cao, Zhi
AU - Lee, Christopher H.T.
N1 - Publisher Copyright:
© 2025 IEEE.
PY - 2025
Y1 - 2025
N2 - This paper presents a comprehensive design for permanent magnet vernier motors (PMVMs) applied to in-wheel direct-drive systems. First, the specific requirements and design boundaries are outlined. Some key performance metrics, such as torque density, power factor, and losses, are analytically derived, and the constraining factors are also identified. The study then investigates the impact of these constraints on overall machine performance, highlighting critical tradeoffs between competing design objectives. Based on the previous analysis, optimal slotpole combinations and design specifications are also selected to balance performance tradeoffs. To validate the theoretical and finite element analysis (FEA) results, a 20 kW prototype designed for a 16 -inch tire is fabricated and tested. Experimental results confirm the effectiveness of the proposed design methodology, demonstrating its applicability for high-torque density in-wheel motor applications.
AB - This paper presents a comprehensive design for permanent magnet vernier motors (PMVMs) applied to in-wheel direct-drive systems. First, the specific requirements and design boundaries are outlined. Some key performance metrics, such as torque density, power factor, and losses, are analytically derived, and the constraining factors are also identified. The study then investigates the impact of these constraints on overall machine performance, highlighting critical tradeoffs between competing design objectives. Based on the previous analysis, optimal slotpole combinations and design specifications are also selected to balance performance tradeoffs. To validate the theoretical and finite element analysis (FEA) results, a 20 kW prototype designed for a 16 -inch tire is fabricated and tested. Experimental results confirm the effectiveness of the proposed design methodology, demonstrating its applicability for high-torque density in-wheel motor applications.
KW - Design consideration
KW - in-wheel direct drive
KW - losses
KW - permanent magnet motor
KW - power factor
KW - torque
KW - tradeoff
KW - vernier motor
UR - https://www.scopus.com/pages/publications/105033229818
U2 - 10.1109/ITECAsia-Pacific63742.2025.11345008
DO - 10.1109/ITECAsia-Pacific63742.2025.11345008
M3 - 会议稿件
AN - SCOPUS:105033229818
T3 - Proceedings of the 2025 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2025
BT - Proceedings of the 2025 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2025
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2025 IEEE Transportation Electrification Conference and Expo, Asia-Pacific, ITEC Asia-Pacific 2025
Y2 - 25 November 2025 through 28 November 2025
ER -