This paper studies the pulse voltage propagation inside machine windings driven by power inverters. The fast switching of devices in the inverter generates voltage pulses with high dv/dt and induces high overshoots at the machine winding terminals. Those high voltage overshoots can accelerate the degradation of the winding insulation system. This work analyzes how the steep-front voltage distributes along the windings during switching transients over a wide range of operation conditions. Circuit analysis is conducted for each transition of switching events over an entire fundamental cycle. An 8-pole interior permanent magnet synchronous machine for hybrid electric vehicle traction applications with a complex winding structure was used to verify the analysis. Tests were conducted to obtain the pulse voltage propagation along the machine winding at all the transition of switching events over an entire fundamental cycle when the machine was working at certain operating points. The effect of multiple factors on the pulse winding voltage propagation were tested and analyzed in this work, such as DC voltage level, current level, rotor speed, etc. Then, the voltage stress was mapped on each part of the winding insulation along the winding for various machine operating points, which quantifies the maximum voltage stress distribution on the winding insulation system. The understanding of the voltage stress distribution gained from this study will be applied to guide optimization of electric machine winding insulation in the future.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Voltage Propagation in Inverter-driven Machine Windings over Wide Operation Range


    Contributors:


    Publication date :

    2020-06-01


    Size :

    695821 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Operating Range Advancement of a Dual-Inverter Driven Machine Through Voltage Range Enhancement

    Gerrits, Thomas / Wijnands, Cornelis G. E. / Paulides, Johannes J. H. et al. | IEEE | 2016


    ELECTRIC OPERATOR ABOUT INTEGRATED INVERTER AND CHARGER USING MOTOR WINDINGS

    BAE JAE NAM / KIM YOUNG EUN / MOON HEE SEOK | European Patent Office | 2016

    Free access

    AUTOMOTIVE INTEGRATED ON-BOARD CHARGER USING INVERTER AND MOTOR WINDINGS

    TASKAS PETROS G / GE BAOMING | European Patent Office | 2025

    Free access

    Wide Bandgap Voltage Source Inverter Design for Automotive Electric Drivetrain

    Savi, Filippo / Buticchi, Giampaolo / Gerada, Chris et al. | IEEE | 2018