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首页> 外文期刊>Electric Power Components and Systems >An Analytical Approach to Eccentricity in Axial Flux Permanent Magnet Synchronous Generators for Wind Turbines
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An Analytical Approach to Eccentricity in Axial Flux Permanent Magnet Synchronous Generators for Wind Turbines

机译：风力发电机轴向磁通永磁同步发电机偏心的分析方法

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摘要

Eccentric air-gaps occur very likely in wind generators as the turbines are subject to continued mechanical stresses. This article analyzes the effects of rotor eccentricity on axial flux permanent magnet machines' performances, such as air-gap flux density, cogging torque, and unbalanced force. In modeling axial flux machines, three-dimensional finite-element method models are required for accurate calculations. However, three-dimensional finite-element analysis is usually time consuming. In order to have a quick evaluation of the axial flux machine performance suitable for online identification, an analytical approach that utilizes quasi three-dimensional computation is developed. The proposed method allows taking into account variation of tooth skewing and different magnet shapes. The results have been validated using two-dimensional and three-dimensional finite element computations. It is shown that by using the proposed analytical approach, it is possible to assess the performance of the axial flux permanent magnet generators under eccentricity with reasonable accuracy.
机译：风力发电机极易出现偏心气隙，因为涡轮机承受着持续的机械应力。本文分析了转子偏心率对轴向磁通永磁电机性能的影响，例如气隙磁通密度，齿槽转矩和不平衡力。在对轴向磁通量机器进行建模时，需要使用三维有限元方法模型来进行精确计算。但是，三维有限元分析通常很耗时。为了快速评估适用于在线识别的轴向磁通机性能，开发了一种利用准三维计算的分析方法。所提出的方法允许考虑齿偏和不同磁体形状的变化。结果已使用二维和三维有限元计算进行了验证。结果表明，通过使用所提出的分析方法，可以以合理的精度评估偏心率下的轴向磁通永磁发电机的性能。

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  • 来源
    《Electric Power Components and Systems》 |2015年第10期|1039-1050|共12页
  • 作者

    Fabrizio Marignetti; Abolfazl Vahedi; Seyyed Mehdi Mirimani;

  • 作者单位

    Department of Electrical and Information Engineering, University of Cassino and Southern Latium, via G. Di Biasio 43, Cassino, (FR) 03043, Italy;

    Center of Excellence for Power Systems Automation and Operation, Department of Electrical Engineering of Iran University of Science & Technology, Tehran, Iran;

    Center of Excellence for Power Systems Automation and Operation, Department of Electrical Engineering of Iran University of Science & Technology, Tehran, Iran,Department of Electrical and Computer Engineering, Babol (Noshirvani) University of Technology, Babol, Mazandaran, Iran;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    analytical models; axial flux permanent magnet machine; eccentricity; wind turbines; finite-element method;

    机译：分析模型;轴向磁通永磁电机偏心风力发电机;有限元法;

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