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Article

Magnetic Noise Reduction of In-Wheel Permanent Magnet Synchronous Motors for Light-Duty Electric Vehicles

1
Department of Mechanical Engineering, Centre for Automotive Engineering, University of Surrey, Guildford GU2 7XH, UK
2
Department of Electrical Engineering, Universitat Politècnica de Catalunya-BarcelonaTech, 08019 Barcelona, Spain
3
Department of Electrical and Computer Engineering, University of Canterbury, Christchurch 8041, New Zealand
*
Author to whom correspondence should be addressed.
Vehicles 2020, 2(1), 156-172; https://doi.org/10.3390/vehicles2010009
Received: 22 November 2019 / Revised: 18 February 2020 / Accepted: 23 February 2020 / Published: 25 February 2020
This paper presents study of a multi-slice subdomain model (MS-SDM) for persistent low-frequency sound, in a wheel hub-mounted permanent magnet synchronous motor (WHM-PMSM) with a fractional-slot non-overlapping concentrated winding for a light-duty, fully electric vehicle applications. While this type of winding provides numerous potential benefits, it has also the largest magnetomotive force (MMF) distortion factor, which leads to the electro-vibro-acoustics production, unless additional machine design considerations are carried out. To minimize the magnetic noise level radiated by the PMSM, a skewing technique is targeted with consideration of the natural frequencies under a variable-speed-range analysis. To ensure the impact of the minimization technique used, magnetic force harmonics, along with acoustic sonograms, is computed by MS-SDM and verified by 3D finite element analysis. On the basis of the studied models, we derived and experimentally verified the optimized model with 5 dBA reduction in A-weighted sound power level by due to the choice of skew angle. In addition, we investigated whether or not the skewing slice number can be of importance on the vibro-acoustic objectives in the studied WHM-PMSM. View Full-Text
Keywords: electric vehicle; electric motor; magnetic noise; vibration; multi-slice subdomain model electric vehicle; electric motor; magnetic noise; vibration; multi-slice subdomain model
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MDPI and ACS Style

Asef, P.; Bargallo, R.; Lapthorn, A. Magnetic Noise Reduction of In-Wheel Permanent Magnet Synchronous Motors for Light-Duty Electric Vehicles. Vehicles 2020, 2, 156-172. https://doi.org/10.3390/vehicles2010009

AMA Style

Asef P, Bargallo R, Lapthorn A. Magnetic Noise Reduction of In-Wheel Permanent Magnet Synchronous Motors for Light-Duty Electric Vehicles. Vehicles. 2020; 2(1):156-172. https://doi.org/10.3390/vehicles2010009

Chicago/Turabian Style

Asef, Pedram, Ramon Bargallo, and Andrew Lapthorn. 2020. "Magnetic Noise Reduction of In-Wheel Permanent Magnet Synchronous Motors for Light-Duty Electric Vehicles" Vehicles 2, no. 1: 156-172. https://doi.org/10.3390/vehicles2010009

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