Affiliation:
1. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Abstract
The flat-wire motor has the characteristics of small size, low noise, high slot fill factor and good thermal conductivity in the slot. It can significantly improve the power density of the motor and is widely used in electric vehicles. The skin effect and proximity effect of the flat wire under high-speed conditions lead to high loss. Based on the established finite element model of a two-dimensional flat-wire motor, this paper first studies the high-frequency loss of different winding layers and the conductor sizes of each layer. Secondly, the influence of the magnetic field on AC loss is reduced by optimizing the tooth-tip height and tooth-tip width. Finally, it is verified that the high-frequency loss is reduced by 16% with the optimized layers, conductor sizes and tooth-tip sizes under the drive condition of the CLTC-P (China Light-duty Test Cycle—Passenger).
Funder
National Natural Science Foundation of China
Reference14 articles.
1. Motor Stator with Thick Rectangular Wire Lap Winding for HEVs;Ishigami;IEEE Trans. Ind. Appl.,2015
2. Skin effect and proximity losses in high speed brushless permanent magnet motors;Popescu;IEEE Energy Convers. Congr. Expo.,2013
3. High-Efficiency Drive for IPMSM Considering Copper Loss and Iron Loss;Zhang;IEEJ Trans. Electr. Electron.,2021
4. Calculation of AC Loss of Hair-Pin Winding Motor;Hua;Small Spec. Electr. Mach.,2019
5. Investigation and Comparison of Different Calculation Methods for AC Copper Loss of Flat Copper Wire in Axial Flux Permanent Magnet Motor;Wu;IEEE Trans. Energy Convers.,2024