Bi-directional Electromagnetic-Thermal Coupling Analysis For Permanent Magnet Traction Motor Under Complex Operating Conditions

IF 0.8 4区工程技术 Q4 ENGINEERING, MECHANICAL

Transactions of The Canadian Society for Mechanical Engineering Pub Date : 2022-03-15 DOI:10.1139/tcsme-2022-0010

Yong Li, Cheng Zhang, Xingyuan Xu

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引用次数: 2

Abstract

Temperature rise has an essential effect on the performance and service life of the permanent magnet in-wheel motor (PMIWM) in traction system of electric vehicle (EV) under complex operating conditions. Bi-directional electromagnetic-thermal coupling method is proposed to analyze the electromagnetic loss and thermal characteristics of the PMIWM considering the influence of temperature rise on the permanent magnetic material. The heat dissipation coefficient and electromagnetic-thermal coupling field model of each component of the PMIWM is analyzed. The distribution of electromagnetic loss and thermal of the PMIWM is investigated under constant speed, constant torque and variable speed and variable torque conditions. A 8kW outer rotor PMIWM is employed to study the electromagnetic-thermal coupling characteristics. Simulations and experimental results show that the thermal field of each component of the PMIWM calculated by the proposed bi-directional electromagnetic-thermal coupling method is more accurate than that of the traditional uni-directional electromagnetic-thermal coupling method under complex operating conditions. The effectiveness of the proposed bi-directional electromagnetic-thermal coupling method provides solid supports for the cooling design of the PMIWM under harsh operating environment.

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永磁牵引电动机在复杂工况下的双向电磁热耦合分析

在复杂的运行条件下，温升对电动汽车牵引系统中的永磁轮电机的性能和使用寿命有着至关重要的影响。考虑到温升对永磁材料的影响，提出了双向电磁热耦合方法来分析PMIWM的电磁损耗和热特性。分析了PMIWM各部件的散热系数和电磁-热耦合场模型。研究了PMIWM在恒速、恒转矩、变速和变转矩条件下的电磁损耗和热损耗分布。采用8kW外转子PMIWM对电磁-热耦合特性进行了研究。仿真和实验结果表明，在复杂的运行条件下，所提出的双向电磁热耦合方法比传统的单向电磁热耦合法计算的PMIWM各部件的热场更准确。所提出的双向电磁-热耦合方法的有效性为PMIWM在恶劣工作环境下的冷却设计提供了坚实的支持。

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来源期刊

Transactions of The Canadian Society for Mechanical Engineering 工程技术-工程：机械

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

5 months

期刊介绍： Published since 1972, Transactions of the Canadian Society for Mechanical Engineering is a quarterly journal that publishes comprehensive research articles and notes in the broad field of mechanical engineering. New advances in energy systems, biomechanics, engineering analysis and design, environmental engineering, materials technology, advanced manufacturing, mechatronics, MEMS, nanotechnology, thermo-fluids engineering, and transportation systems are featured.