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中国电机工程学报 2007, 27(18) 61-66 DOI:
ISSN: 0258-8013 CN: 11-2107/TM |
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| 电机电工 |
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强磁场永磁机构组装过程的动态有限元分析 |
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张为民 谢德馨 白保东 曾林锁 |
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沈阳工业大学电气工程学院 沈阳工业大学电气工程学院 沈阳工业大学电气工程学院 沈阳工业大学电气工程学院 |
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摘要：
提出一种外磁场按任意规律变化时，永磁材料特性的数值模拟方法。该方法将Preisach磁滞模型和有限元法相结合，完成对强磁场永磁机构装配过程的动态磁场分析。所提出的方法将永磁材料包括局部回线在内的磁滞特性包含到数学模型中，在合理的假设下，考虑了计及磁滞效应的"旋转磁化"。该方法只需要利用永磁材料的极限磁滞回线即可完成分析计算，避免了采用大量实验统计方法确定传统Preisach磁滞模型的分布函数。通过与传统简化计算方法(电流片等效法)和实验结果的比较，证明了所提方法的有效性。
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关键词：
魔环
Preisach磁滞模型
旋转磁化
有限元法
磁场分析
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DYNAMIC FINITE ELEMENT ANALYSIS OF PERMANENT MAGNET ASSEMBLY WITH HIGH FIELD STRENGTH IN A PROCESS OF ASSEMBLY |
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Abstract:
A method is proposed to simulate the characteristics of permanent magnet materials with a magnetic field varying arbitrarily in this paper. Combining Preisach model and finite element analysis, a dynamic magnetic field analysis is implemented for a permanent magnet assembly in a process of assembling. The hysteresis characteristic including local loop and rotational magnetization are considered in the formulation of the method proposed with reasonable assumptions. The magnetic field analysis can be carried out with only the extremal magnetic hysteresis loop of the material without the distributed function established through experimental statistics in the traditional Preisach model. The numerical results by the method are compared with the ones by a conventional method (electric current sheet equivalent), and measured data to verify the validity of the presented method.
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Keywords:
magic ring
Preisach hysteresis model
rotational magnetization
finite element method
magnetic field analysis
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收稿日期 2006-04-19 修回日期 1900-01-01 网络版发布日期 |
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DOI: |
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基金项目:
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通讯作者: 谢德馨 |
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作者简介: |
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作者Email: xiebaiy@mail.sy.ln.cn |
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| 参考文献： |
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| Copyright by 中国电机工程学报 |
