電気巻線の等価熱伝導率評価法に関する研究

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  • A study of a technique to predict the equivalent thermal conductivity of an electric coil.
  • デンキ マキセン ノ トウカ ネツ デンドウリツ ヒョウカホウ ニ カンスル

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A theoretical technique to predict the equivalent thermal conductivity of coils arranged for electric rotating machines which are composed of a conductor, an insulating covering and filling of resin or air was proposed. The proposed technique showed fairly good agreement with the results of numerical calculations, using the finite element method, and the experimental results in the packing factor of coil and the impregnation variable. Furthermore, a simulation of random coils was performed to predict their equivalent thermal conductivity using the Monte Carlo Method. According to the results, the equivalent thermal conductivity of random coils can be estimated using the same techniques as proposed for arranged coils.

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