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HF model of High Temperature machine coils

Abstract : This paper deals with a high frequency model of inorganic insulated coils used to build high temperature (HT°) machine. The HT° wire has a nickel layer protecting the copper against oxidation and a thin inorganic coating with reduces insulation properties. Therefore, the coils must be designed with a special care for getting a good distribution of turn-to-turn voltage during the fast transients excited by a steep voltage increment of the PWM inverter. A specific coil structure is proposed and a high frequency (HF) equivalent circuit able to compute the turn-to-turn voltages during transients. A finite element based method for determining magnetic couplings between turns, is proposed.
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Submitted on : Saturday, May 15, 2021 - 9:27:36 PM
Last modification on : Wednesday, November 3, 2021 - 6:50:12 AM


  • HAL Id : hal-03226863, version 1



Hamed Elmadah, Daniel Roger, Noureddine Takorabet. HF model of High Temperature machine coils. HF model of High Temperature machine coils, Aug 2019, Nancy, France. ⟨hal-03226863⟩



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