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场路耦合方法在大型电力变压器三维瞬态有限元分析中的应用

, PP. 219-224

Keywords: 场路耦合,非线性各向异性,三维瞬态场,变压器,损耗,漏磁场

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Abstract:

提出一种三维瞬态场路耦合有限元分析方法计算变压器结构件的三维漏磁场及损耗,该方法能够考虑铁磁材料非线性各向异性的电磁特性。以TEAMProblem21C-M1模型为例,通过磁屏蔽和导磁钢板涡流损耗的计算,表明计算结果和测量结果基本吻合,验证了该方法的正确性。并将该方法应用于一台大型单相自耦电力变压器的数值计算中,结构件损耗的计算误差为3.64%。验证了本文提出方法的正确性和可行性,使得大型电力变压器三维漏磁场及结构件损耗的准确计算得以实现。

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