Fractional-Slot Permanent Magnet Brushless Machines with Low Space Harmonic Contents
Fractional-Slot Permanent Magnet Brushless Machines with Low Space Harmonic Contents
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DOI：
10.1109/tmag.2013.2280883
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发表时间：
2014-01-01
影响因子：
2.1
通讯作者：
Wang, Weiya
中科院分区：
文献类型：
--
作者：
Wang, Jiabin;Patel, Vipulkumar I.;Wang, Weiya
本文关注永磁（PM）电机的新型绕组配置以及相关的极槽组合，这些配置和组合可提高性能并有助于降低成本。与现有技术相比，所提出设计的显著特点是消除和/或减少了由现有的每极每相分数槽永磁电机同心绕组所产生的不良空间谐波。这将带来诸多益处，包括显著降低转子永磁体中的涡流损耗、缩短端部绕组从而降低铜耗和铜材使用量、提高功率/转矩密度、降低制造成本以及提高能源效率。尽管所提出的技术主要针对无刷永磁电机，但它也适用于同步磁阻电机、感应电机和同步绕线式磁场电机。所提出的技术被应用于一款用于电动汽车牵引应用的内置式永磁电机的设计，并通过对一台样机的测量得到了验证。
The paper is concerned with new winding configurations and associated pole-slot combinations for permanent magnet ( PM) machines that lead to improved performance and facilitate cost reduction. Compared to the current state of the art, the salient feature of the proposed designs is elimination and/or reduction of undesirable space harmonics which result from the existing fractional-slot per phase per pole permanent magnet machines with concentric windings. This will bring the benefits of significant reduction of the eddy current loss in the rotor permanent magnets, short end-winding and hence reduced copper loss and copper usage, increased power/torque density, reduction in manufacturing cost, and improved energy efficiency. Although the proposed technique is primarily aimed for brushless permanent magnet machines, it is also applicable to synchronous reluctance machines, induction machines and synchronous wound field machines. The proposed technique is applied to the design of an interior mounted permanent magnet machine for electric vehicle traction applications, and demonstrated by the measurements on a prototype machine.