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-  2018 

变压器铁芯等效磁导率的反演计算方法 Equivalent magnetic permeability inversion calculation method of transformer core

Keywords: 参数反演,遗传算法,变压器,反演计算,有限元法

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Abstract:

采用有限元法分析变压器电磁问题时,往往忽略铁芯的叠片结构,将铁芯简化为同种材料构成的整体,铁芯等效磁导率的取值直接影响着仿真计算的精度.将电磁场有限元方法与智能遗传算法相结合,研究了铁芯等效磁导率的反演计算方法,研究结果表明,即使是非取向硅钢片,铁芯简化模型的等效磁导率也表现出方向性,取与硅钢片平行方向的磁导率等于单片硅钢片磁导率,与硅钢片垂直方向的等效磁导率略小于单片磁导率,可有效提高有限元法分析变压器电磁问题的精度

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