Transactions of China Electrotechnical Society  2019, Vol. 34 Issue (zk1): 22-29    DOI: 10.19595/j.cnki.1000-6753.tces.L80816
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Waterway Design and Temperature Field Analysis of Vehicle Permanent Magnet Synchronous Motor Based on Fluid-Solid Coupling
Wang Xiaofei, Dai Ying, Luo Jian
School of Electrical and Mechanical Engineering and Automation Shanghai University Shanghai 200072 China

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Abstract  The temperature rise of traction motor for vehicle directly affects the safety and reliability of the new energy vehicle traction system. The accurate calculation of temperature rise of motor and reasonable design of cooling system are of great significance for the new energy vehicle. In this paper, a permanent magnet synchronous motor with a rated power of 20kW was taken as an example. It compared three types of cooling channels: spiral type, axial Z-shaped and radial Z-shaped from the aspects of flow velocity, differential pressure and temperature rise. Through reasonable equivalent and assumptions, established a 3D thermal simulation model of the machine. Based on the fluid-solid coupling, the thermal simulation of the motor was carried out to analyze the temperature rise of the motor under different working conditions. By comparing and analyzing the temperature rise of the motor with different cooling water flow rates, the optimal velocity of the inlet of the motor waterway was selected. Finally, the temperature rise experiment was carried out with the optimal velocity as the inlet velocity of cooling water of the prototype to verify the correctness of the simulation analysis.
Key wordsPermanent magnet synchronous motor      cooling system      fluid-solid coupling      motor temperature rise      optimal flow rate     
Received: 30 June 2018      Published: 29 July 2019
PACS: TM351  
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Wang Xiaofei
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Wang Xiaofei,Dai Ying,Luo Jian. Waterway Design and Temperature Field Analysis of Vehicle Permanent Magnet Synchronous Motor Based on Fluid-Solid Coupling[J]. Transactions of China Electrotechnical Society, 2019, 34(zk1): 22-29.
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