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2024-07-05
Study on ac Loss Suppression in Rectangular Winding Motors for Electric Vehicles
By
Progress In Electromagnetics Research C, Vol. 145, 27-34, 2024
Abstract
Currently, excessive AC loss in the rectangular winding motor used for electric vehicles poses a significant challenge, necessitating effective measures to suppress the losses. This paper focuses on the Prius IV motor, employing a finite element two-dimensional model established using JMAG software. The influence of conductor material and the number of rectangular winding layers on motor AC loss under various operating conditions is thoroughly analyzed. Maintaining a constant number of rectangular winding layers, aluminum (Al) conductors replace copper (Cu) conductors in 2-layer, 4-layer, 6-layer, and 8-layer configurations, respectively. AC losses are compared among motors with 4-layer, 6-layer, 8-layer, and 10-layer Cu rectangular windings, all having identical slot dimensions. Subsequently, the 10-layer Al conductor scheme is chosen to optimize motor design. The results demonstrate an average reduction in AC loss up to 59.24% after motor optimization, further reducing motor manufacturing costs.
Citation
Shengyang Xu, and Quanfeng Li, "Study on ac Loss Suppression in Rectangular Winding Motors for Electric Vehicles," Progress In Electromagnetics Research C, Vol. 145, 27-34, 2024.
doi:10.2528/PIERC24050402
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