@inproceedings{28d06c047e4f4a32b49db7f40f02a30c,
title = "Static Eccentricity Effects on Electromagnetic Torque of Permanent Magnet Synchronous Machines for Direct In-wheel Traction Applications",
abstract = "Static eccentricity (SE) is prevalent fault in motors, arising from manufacturing errors and assembly deviations. It can distort the cogging torque and back electromotive force (back-EMF) of motors, further extending the negative effects to electromagnetic torque and generating additional torque ripple. For in-wheel motors, torque ripple has been demonstrated to directly impact the smooth operation of action modules and the subjective comfort of electric vehicles. In this paper, a general analytical model is constructed based on the airgap field modulation theory (AFMT) to investigate the effects of SE on cogging torque and permanent magnet (PM) torque. As illustrated by the proposed analytical model for a 72-slot 80-pole (72s/80p) outer rotor surface-mounted permanent magnet synchronous motor (OR-SPMSM), in addition to the torque ripples occurring at 6 multiples under healthy condition (HC), SE induces additional even-order torque ripples.",
keywords = "airgap field modulation theory, In-wheel motor, Static eccentricity, torque ripple",
author = "Guangchen Wang and Yuchen Wang and Hengliang Zhang and Wei Hua and Tianxiang Zhang",
year = "2026",
month = jan,
day = "12",
doi = "10.23919/ICEMS66262.2025.11317421",
language = "English",
series = "ICEMS 2025 - 28th International Conference on Electrical Machines and Systems",
publisher = "IEEE",
pages = "234--238",
booktitle = "ICEMS 2025 - 28th International Conference on Electrical Machines and Systems",
address = "USA United States",
note = "28th International Conference on Electrical Machines and Systems, ICEMS 2025 ; Conference date: 16-11-2025 Through 19-11-2025",
}