Comparison of Thermal Characteristics in Various Aspect Ratios for Radial-Flux and Axial-Flux Permanent Magnet Machines
Comparison of Thermal Characteristics in Various Aspect Ratios for Radial-Flux and Axial-Flux Permanent Magnet Machines
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DOI：
10.1109/tia.2023.3255845
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发表时间：
2023-05
影响因子：
4.4
通讯作者：
R. Tsunata;M. Takemoto;J. Imai;Tatsuya Saito;T. Ueno
中科院分区：
文献类型：
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作者：
R. Tsunata;M. Takemoto;J. Imai;Tatsuya Saito;T. Ueno
本文提出了一种轴向磁通永磁电机(AFPM)，该电机采用钕粘结永磁体和无铁心转子结构，并对其在要求高效率和低成本的工业应用中的性能进行了评估。AFPM能够在高速区域实现高效率，这是因为它的ND键合永磁可以抑制涡流损耗。此外，AFPM可以在没有冷却系统的情况下在额定工作点连续运行，因此可以省去一个人的费用。因此，AFPM可以同时实现高效率和低成本的大规模生产。本文对所提出的AFPM与传统径向磁通永磁电机(RFPM)的热特性进行了综合比较。此外，本文还重点研究了长宽比对两种机器的热特性的影响。最后，利用3D-FEA和实验结果对所提出的AFPM在工业应用中的有效性进行了评估。
This paper proposes an axial-flux permanent magnet machine (AFPM) that uses a neodymium-bonded permanent magnet (Nd-bonded PM) and a coreless rotor structure and assesses how it performs in industrial applications requiring high efficiency and low cost. The AFPM is able to achieve high efficiency in high-speed regions because its Nd-bonded PM can restrain eddy current loss. Additionally, the AFPM can continuously function at the rated operating point without a cooling system, so the expenses for one can be eliminated. Hence, the AFPM can simultaneously achieve high efficiency and low-cost mass production. In this paper, a comprehensive comparison including the thermal characteristics of the proposed AFPM and a conventional radial-flux permanent magnet machine (RFPM) is shown. Furthermore, this paper also focuses on how the aspect ratio influences the thermal characteristics of both machines. Finally, the effectiveness of the proposed AFPM in industrial applications is assessed using 3D-FEA and experimental results.