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基于区域分解的EFG-FE耦合法及其在电机运动问题的应用

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Keywords: 无单元法,区域分解算法,EFG-FE耦合法,电机运动

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Abstract:

有限元法计算电机电磁场时,对于定转子相对运动问题,伴随着转子的不断运动必然要进行大量的磁场计算。气隙有限元网格的存在造成了转子运动的困难;而无单元法由于不存在有限元网格,因而不必担心由转子运动带来的网格的畸变,将其同有限元法耦合,可消除有限元网格畸变带来的影响。本文提出一种基于区域分解的无单元和有限元耦合方法,并用来处理定子与转子相对运动问题。计算证明,该方法的计算精度满足要求。将该方法应用在电机电磁场中,分析得到的结果克服了由于有限元法单元畸变产生的误差。

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