A Comparative Study of Pole–Slot Combination with Fractional Slot Concentrated Winding in Outer Rotor Permanent Magnet Synchronous Generator for Hybrid Drone System

Machines Pub Date : 2024-07-10 DOI:10.3390/machines12070464

Jeongwon Kim, Ju Lee, Hyunwoo Kim

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Abstract

This paper is a comparative study of pole–slot combinations with fractional slot concentrated windings in an outer rotor permanent magnet synchronous generator (ORPMSG) for a hybrid drone system. Fractional slot machines have been studied for automotive applications because of their high performance and simple winding manufacturing, compared with those of integer slot machines. In this study, four pole–slot combinations of ORPMSG with fractional slot concentrated windings were selected for comparison with the performance of the hybrid drone system. Based on the results of a finite element analysis (FEA), the machines were analyzed for cogging torque, back electromagnetic force (BEMF), torque, and electromagnetic loss under the same conditions as the machine specifications. Among the four pole–slot combinations of the ORPMSM, a one pole–slot model of the ORPMSG was selected, considering the performances of the machines. The selected pole–slot model of the ORPMSG was manufactured, and experiments were conducted on the manufactured model to verify the FEA results. Finally, the effectiveness of the comparative study of pole–slot combination with fractional slot concentrated winding in ORPMSM was verified by comparing the FEA and experimental results.

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混合无人机系统外转子永磁同步发电机极槽组合与分数槽集中绕组的比较研究

本文对混合动力无人机系统的外转子永磁同步发电机（ORPMSG）中的磁极-槽组合与分数槽集中绕组进行了比较研究。与整数槽机相比，分数槽机性能高、绕组制造简单，因此已被研究用于汽车应用。本研究选择了带有分数槽集中绕组的 ORPMSG 的四种极槽组合，以与混合动力无人机系统的性能进行比较。根据有限元分析（FEA）的结果，在与机器规格相同的条件下，对机器的齿槽转矩、反向电磁力（BEMF）、转矩和电磁损耗进行了分析。考虑到 ORPMSM 的性能，在 ORPMSM 的四个极槽组合中，选择了 ORPMSG 的一个极槽模型。对选定的 ORPMSG 极槽模型进行了制造，并对制造的模型进行了实验，以验证有限元分析结果。最后，通过比较有限元分析和实验结果，验证了在 ORPMSM 中极-槽组合与分数槽集中绕组比较研究的有效性。

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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Machines

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