Multi-physical Field Coupling Analysis of Flat Wire Motor

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-09-13 DOI:10.1007/s12239-024-00155-y

Yecui Yan, Chenyang Mao, Lin Chen

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Abstract

To further improve the accuracy of the complex multi-physics coupling system of flat wire motors, this paper presents an improved multi-physics field modeling method, which conducts a relatively comprehensive analysis of electromagnetic(EM), temperature, flow and stress field. And the multi-field coupling global model is simplified based on the analysis of two-field coupling relationships. First, each two-field coupling sub-model of four key physical fields is analyzed by bidirectional coupling and the weak coupling way is ignored. Secondly, based on the analysis results of the two-field coupling sub-model, the coupling relationship between electromagnetic field, temperature field and flow field is simplified and the global coupling model of electromagnetic field, temperature field and flow field inside the motor is established. Finally, because the stress field of the motor rotor is unidirectional influced by the temperature field, the rotor strength of the high-speed motor is analyzed based on temperature field to stress field coupling. Compared with the calculation results of EM and temperature two-field coupling, the accuracy of electromagnetic torque under multi-field coupling is increased by 4.4%, the calculation accuracy of electromagnetic loss is also increased by 2.1%. And the calculation accuracy of the motor temperature field is increased by 4.5%.

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扁线电机的多物理场耦合分析

为进一步提高扁线电机复杂多物理场耦合系统的精度，本文提出了一种改进的多物理场建模方法，对电磁场、温度场、流动场和应力场进行了较为全面的分析。并在分析两场耦合关系的基础上简化了多场耦合全局模型。首先，对四个关键物理场的各两场耦合子模型进行双向耦合分析，忽略弱耦合方式。其次，根据两场耦合子模型的分析结果，简化电磁场、温度场和流场之间的耦合关系，建立电机内部电磁场、温度场和流场的全局耦合模型。最后，由于电机转子的应力场受温度场的影响是单向的，因此基于温度场与应力场耦合分析了高速电机的转子强度。与电磁和温度两场耦合的计算结果相比，多场耦合下电磁转矩的计算精度提高了 4.4%，电磁损耗的计算精度也提高了 2.1%。电机温度场的计算精度提高了 4.5%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.