A Generalized Magnetic Circuit Modeling Approach for Design of Surface Permanent-Magnet Machines
A Generalized Magnetic Circuit Modeling Approach for Design of Surface Permanent-Magnet Machines
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DOI：
10.1109/tie.2011.2161251
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发表时间：
2012-02
影响因子：
7.7
通讯作者：
M. Hsieh;You-Chiuan Hsu
中科院分区：
文献类型：
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作者：
M. Hsieh;You-Chiuan Hsu
提出了一种用于永磁电机设计的广义等效磁路模型。传统的方法已被应用到永磁电机的设计，但可能是不够准确或不考虑极槽计数一般化。这将导致在初始设计阶段尺寸精度的降低。此外，由于难以确定单个定子齿中的磁通量，因此在简化模型中通常忽略磁饱和或通过校正因子进行补偿。在本文中，定子绕组电流和永磁体产生的磁通可以准确，快速地计算使用开发的模型，考虑饱和。提出了一种新的永磁磁极建模方法，使磁路模型适用于任意的极槽组合。这有助于机器尺寸的确定，而无需计算昂贵的有限元分析（FEA）。首先使用所提出的方法设计了一台540千瓦的PM电机，然后用FEA进行了验证。另一个350-W的机器随后设计，制造，并通过有限元分析和实验验证。比较结果表明了该模型的有效性。
This paper proposes a generalized equivalent magnetic circuit model for the design of permanent-magnet (PM) electric machines. Conventional approaches have been applied to PM machine design but may be insufficiently accurate or generalized without taking pole-slot counts into consideration. This would result in reduction of dimensioning accuracy at the initial design stage. Also, magnetic saturation is often ignored or compensated by correction factors in simplified models since it is difficult to determine the flux in individual stator teeth. In this paper, the flux produced by stator winding currents and PMs can be calculated accurately and rapidly using the developed model, taking saturation into account. A new modeling technique for PM poles is proposed so that the magnetic circuit is applicable to any pole-slot combinations. This aids machine dimensioning without the need for computationally expensive finite-element analysis (FEA). A 540-kW PM machine is first designed using the proposed method and then verified with FEA. Another 350-W machine is subsequently designed, manufactured, and validated by both FEA and experiments. The comparisons demonstrate the effectiveness of the proposed model.