Rare-Earth Free Unity Power Factor Bi-Axial Excitation Synchronous Machine for Traction Applications

IF 4.2 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Industry Applications Pub Date : 2024-03-19 DOI:10.1109/TIA.2024.3379312

Ritvik Chattopadhyay;Junyeong Jung;Md. Sariful Islam;Ion Boldea;Iqbal Husain

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引用次数: 0

Abstract

Rare-earth-based traction machines are subject to supply chain, geo-political, and price fluctuation issues, which makes rare-earth-free motor topologies attractive for electric vehicle (EV) traction applications. In this research, a 24-slot/4-pole, unity power factor, air-cooled, rare-earth-free bi-axial excitation synchronous machine (BESM) with ferrite magnets is explored for traction applications. The proposed machine achieves a unity power factor due to the presence of stator flux countering magnets embedded in the rotor, while the torque-producing component of the rotor flux is produced by DC field windings. A 4.2 kW, 40 Nm BESM is designed using a 2D-finite element analysis (FEA) based optimization, and a prototype is fabricated. The performance of the prototype is experimentally verified up to the rated torque in a dynamometer test setup. Based on the experimental validation of the prototype, a scaled-up 100 kW BESM is designed and characterized using FEA to verify the effectiveness of the proposed concept for high-power traction applications.

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用于牵引应用的无稀土统一功率因数双轴励磁同步机

基于稀土的牵引机受到供应链、地缘政治和价格波动问题的影响，这使得无稀土电机拓扑结构在电动汽车（EV）牵引应用中颇具吸引力。在这项研究中，我们探索了一种用于牵引应用的 24 槽/4 极、统一功率因数、风冷、无稀土双轴励磁同步机 (BESM)。由于转子中嵌入了定子磁通抵消磁铁，而转子磁通的转矩分量则由直流磁场绕组产生，因此所提议的机器可实现单功率因数。通过基于二维有限元分析（FEA）的优化设计，设计出了 4.2 千瓦、40 牛米的 BESM，并制作了原型。在测功机测试装置中对原型机的性能进行了实验验证，最高可达额定扭矩。在对原型进行实验验证的基础上，使用有限元分析法设计并表征了一个放大的 100 kW BESM，以验证所提出的概念在大功率牵引应用中的有效性。

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

IEEE Transactions on Industry Applications 工程技术-工程：电子与电气

CiteScore

9.90

自引率

9.10%

发文量

747

审稿时长

3.3 months

期刊介绍： The scope of the IEEE Transactions on Industry Applications includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.