Analytical calculation method of a liquid-cooling eddy current brake considering magnetic saturation and skin effect

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2023-10-20 DOI:10.3233/jae-220246

Benzhen Guo, Desheng Li, Jinshan Tian, Lezhi Ye, Bin Wang, Zequn Li

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Abstract

In this article, a clear and concise analytical method for predicting the performance of a Liquid-cooling eddy current brake (LC-ECB) is proposed. The LC-ECB has a coolant channel in the rotor to allow direct cooling of the inner surface of the stator. The static air-gap magnetic field distribution is obtained by the dynamic magnetic equivalent circuit (MEC) method, and the magnetic flux leakage and global magnetic saturation effects are fully considered. The magnetic field intensity distribution function of the eddy current reaction magnetic field is derived for the first time based on Ampere circuital theorem. Considering the local magnetic saturation and skin effect, a novel double-iteration algorithm based on the conservation principle of magnetic pressure drop is applied to obtain the transient air-gap flux density distribution, and then the brake torque expression is obtained. The finite element method (FEM) and experimental results show that the proposed method is feasible and effective. The new model is easy to program and can be easily used in the initial design and optimization of LC-ECB.

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考虑磁饱和和集肤效应的液冷涡流制动器解析计算方法

本文提出了一种预测液冷涡流制动器(LC-ECB)性能的简洁明了的分析方法。LC-ECB在转子上有一个冷却剂通道，可以直接冷却定子的内表面。采用动态磁等效电路(MEC)方法得到了静态气隙磁场分布，充分考虑了漏磁和全局磁饱和效应。根据安培环路定理，首次导出了涡流反应磁场的磁场强度分布函数。考虑局部磁饱和和集肤效应，采用基于磁压降守恒原理的双迭代算法，得到了瞬态气隙磁通密度分布，进而得到了制动转矩表达式。有限元分析和实验结果表明了该方法的可行性和有效性。该模型易于编程，可方便地用于LC-ECB的初始设计和优化。

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.