Design Considerations of a Direct Drive Brushless Machine With Concentrated Windings
Design Considerations of a Direct Drive Brushless Machine With Concentrated Windings
复制标题
DOI：
10.1109/tec.2007.905073
复制
发表时间：
2008-02
影响因子：
4.9
通讯作者：
R. Wróbel;P. Mellor
中科院分区：
文献类型：
--
作者：
R. Wróbel;P. Mellor
本文讨论了开口槽、模块绕组、外转子电机拓扑结构的性能特点。磁极和槽数的组合提出的绕组系数是最大的和转矩涟漪是最小的。采用参数化有限元模型（FEM）结合遗传算法（GA）对六种极槽结构的磁路进行了优化设计。这些设计基准对传统的1.5槽/极外转子无刷直流电机。这些候选电机版本的特征在于具有相同的外转子直径、可用于绕组的总槽面积以及相同体积的永磁体（PM）。在分析的基础上，选择了最有前途的电机结构，并建立了一个原型轮毂电机应用于小型电动汽车。原型的测试数据被用来验证初步分析的结果，并实际证明的拓扑结构的属性。
This paper discusses the performance attributes of the open-slot, modular-wound, external-rotor, topology of electrical machine. Combinations of pole and slot numbers are presented for which the winding factor is maximal and torque ripple is minimal. An optimization of the magnetic circuit design of six promising pole-slot configurations is undertaken using a parametric finite element model (FEM) combined with a genetic algorithm (GA). These designs are benchmarked against a conventional 1.5 slots/pole external-rotor brushless dc machine. These candidate electrical machine versions are characterized by having the same external-rotor diameter, total slot area available for the winding and by equal volumes of permanent magnet (PM). Based on the analysis, the most promising motor structure was selected and a prototype wheel-hub motor has been built for application in a small electrical vehicle. Test data from the prototype is used to validate the findings of the initial analyses and practically demonstrate the attributes of the topology.