Winding Function Model-Based Performance Evaluation of a PM Transverse Flux Generator for Applications in Direct-Drive Systems

Mehrage Ghods;Jawad Faiz;Ali A. Pourmoosa
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Abstract

The magnetic flux in a permanent magnet transverse flux generator (PMTFG) is three-dimensional (3D), therefore, its efficacy is evaluated using 3D magnetic field analysis. Although the 3D finite-element method (FEM) is highly accurate and reliable for machine simulation, it requires a long computation time, which is crucial when it is to be used in an iterative optimization process. Therefore, an alternative to 3D-FEM is required as a rapid and accurate analytical technique. This paper presents an analytical model for PMTFG analysis using winding function method. To obtain the air gap MMF distribution, the excitation magneto-motive force (MMF) and the turn function are determined based on certain assumptions. The magnetizing inductance, flux density, and back-electro-magneto-motive force of the winding are then determined. To assess the accuracy of the proposed method, the analytically calculated parameters of the generator are compared to those obtained by a 3D-FEM. The presented method requires significantly shorter computation time than the 3D-FEM with comparable accuracy.
基于绕组功能模型的直驱系统应用永磁横向磁通发电机性能评估
永磁横向磁通发生器(PMTFG)中的磁通量是三维的,因此需要通过三维磁场分析来评估其功效。虽然三维有限元法(FEM)在机器仿真方面具有很高的精确度和可靠性,但它需要较长的计算时间,这在用于迭代优化过程时至关重要。因此,需要一种快速准确的分析技术来替代 3D-FEM 方法。本文介绍了一种使用绕组函数法分析 PMTFG 的分析模型。为了获得气隙 MMF 分布,需要根据特定假设确定激励磁动力(MMF)和匝函数。然后确定绕组的磁化电感、磁通密度和反电动势。为了评估所提方法的准确性,我们将分析计算出的发电机参数与 3D-FEM 得出的参数进行了比较。在精度相当的情况下,所提出的方法所需的计算时间大大短于三维有限元。
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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