Low-Cost Interior Permanent Magnet Machine With Multiple Magnet Types
Low-Cost Interior Permanent Magnet Machine With Multiple Magnet Types
复制标题
具有多种磁铁类型的低成本内置永磁电机
DOI：
10.1109/tia.2020.2966458
复制
发表时间：
2020
影响因子：
4.4
通讯作者：
B. Lequesne
中科院分区：
文献类型：
--
作者：
Qingqing Ma;A. El;B. Lequesne
本文旨在回答以下问题：是否有可能以较低的成本设计出具有稀土磁体所期望的性能的永磁机？性能被理解为扭矩、尺寸、效率、退磁和温升。通过对混合稀土和铁氧体永磁体的不同内部永磁体电机拓扑结构的系统研究来解决这个问题。这项研究从普锐斯2010牵引电机的生产基准开始，内部磁铁以单一的V型模式放置。它研究了各种转子设计，最具体地说，单V和双V模式以及轮辐配置。定子截面设计和绕组选择是固定的，从电机冷却的角度提供了坚实的比较基础。对于每个转子设计，都会评估扭矩潜力和机器材料成本，后者以每美元扭矩表示。基于轮辐模式找到了一种有希望的结构，并对其进行了进一步的建模，以评估效率以及机械强度和对短路和退磁的抵抗。它使稀土磁体体积减少了60%以上。
This article is a contribution to answer the following question: Is it possible to design a permanent magnet machine with the performance expected from rare-earth magnets but at a lower cost? Performance being understood as torque, size, efficiency, demagnetization, and temperature rise together. The question is addressed with a systematic exploration of different interior permanent magnet machine topologies mixing rare-earth and ferrite permanent magnets. The study starts from a production baseline, the Prius 2010 traction motor, with interior magnets placed in a single V pattern. It investigates various rotor designs, most specifically, single V and double V patterns as well as spoke configurations. The stator cross-section design and winding selection are fixed, providing a solid comparison basis from the point of view of machine cooling. For each rotor design, torque potential and machine material cost are assessed, the latter expressed as torque per dollar. A promising configuration was found based on a spoke pattern for which further modeling was performed to assess efficiency as well as mechanical strength and resistance to short circuits and to demagnetization. It reduces the rare-earth magnet volume by over 60%.