Design and optimization of a radial-axial hybrid excited machine with spoke-type permanent magnet rotor

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-05-22 DOI:10.24425/aee.2024.149924

Hongbo Qiu, Wenhao Gao, Shuaishuai Duan

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Abstract

To further enhance the speed regulation range of the hybrid excited machine (HEM), the structure of a magnetic ring is optimized using a combination of the magnetic circuit method (MCM) and numerical analysis method in this paper, and a disc magnetic ring (DMR) is proposed. The magnetic density distribution of the proposed disc magnetic ring hybrid excited machine (DMRHEM) is compared to the radial-axial hybrid excited machine (RAHEM), and the superiority of alleviating a saturation problem in the proposed DMRHEM is determined. To improve the power density, the spoke-type permanent magnet (PM) rotor is applied. The influence of the proposed DMR on the HEM is analyzed, and the field adjustment capability of the proposed DMRHEM is better. Based on this, by combining the bypass principle, the analytical expressions for the relations between the rotor pole-pair number and the motor axial length/stator inner diameter (MAL/SID) as well as flux regulation capability are derived to further explore the superiority of the proposed DMRHEM. The influence mechanism of the rotor pole-pair number and the MAL/SID on the proposed DRMHEM is determined. The optimal MAL/SID and pole-pair number are obtained.

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带辐条式永磁转子的径向-轴向混合励磁机的设计与优化

为了进一步提高混合励磁机（HEM）的调速范围，本文采用磁路法（MCM）和数值分析法相结合的方法优化了磁环结构，并提出了一种圆盘磁环（DMR）。将所提出的圆盘磁环混合励磁机（DMRHEM）的磁密度分布与径向-轴向混合励磁机（RAHEM）进行了比较，并确定了所提出的 DMRHEM 在缓解饱和问题方面的优越性。为了提高功率密度，采用了辐条式永磁（PM）转子。分析了拟议的 DMR 对 HEM 的影响，发现拟议的 DMRHEM 具有更好的磁场调节能力。在此基础上，结合旁路原理，推导出转子磁极对数与电机轴向长度/定子内径（MAL/SID）以及磁通调节能力之间关系的解析表达式，进一步探讨了所提 DMRHEM 的优越性。确定了转子极对数和 MAL/SID 对拟议 DRMHEM 的影响机制。得出了最佳 MAL/SID 和磁极对数。

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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.