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Design of inorganic coils for high temperature electrical machines

Abstract : The paper deals with a high frequency model of inorganic coils used to build high temperature (HT degrees) motor. The HT degrees wire has a nickel layer that protects the copper against oxidation and a thin inorganic coating, which has poor electrical and mechanical 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 the steep fronted voltages 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. The voltage distribution between the coils of a stator phase is also detailed.
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Submitted on : Monday, September 7, 2020 - 1:56:12 PM
Last modification on : Wednesday, November 3, 2021 - 6:50:18 AM

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Hamed Elmadah, Daniel Roger, Noureddine Takorabet. Design of inorganic coils for high temperature electrical machines. Open Physics, De Gruyter, 2019, 17 (1), pp.698-708. ⟨10.1515/phys-2019-0072⟩. ⟨hal-02931973⟩



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