In low-pressure environment, partial discharges (PDs) appear for lower voltages, shortening strongly the machines life times fed by PWM inverters. A new approach is proposed for designing AC motor windings free of PD at low pressure. The method consists of adding a thin resistive layer on the outer surface of the enameled wire used for winding the machine. Thereby, PDs occur only in critical zones, near the wire connections, rather than randomly in coils. Consequently, a coil design with a small additional quantity of varnish in critical zones can increase strongly the partial discharge inception voltage (PDIV). The paper proposes a theoretical analysis of the improvement based on Paschen’s law for its application in non homogenous electrical fields.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    A Proposition for Improving the Design of Motor Windings for low-Pressure Environment


    Contributors:


    Publication date :

    2018-06-01


    Size :

    5661300 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    ELECTRICAL WINDINGS FOR A LOW PRESSURE ENVIRONMENT

    NIEMINEN JUHA / GHARAKHANI SIRAKI ARBI / OZER RACHEL | European Patent Office | 2023

    Free access

    Brushless DC motor with dual windings

    Auclair, G. F. / Hertzendorf, B. H. / Manteuffel, E. W. | NTRS | 1971



    Motor-generator with multiple stator windings

    GIERAS JACEK F / ROZMAN GREGORY I | European Patent Office | 2019

    Free access