Motor drives are a critical piece of equipment in electric vehicles, yet the existing and aging voltage source inverter topology used in most drivetrains suffers from well-known challenges and requires numerous mitigation techniques increasing system cost and complexity and limiting the power density. Although the technology has reached a commendable maturity level using silicon IGBT devices, leveraging the latest wide bandgap devices is proving to be extremely challenging. This paper proposes a novel soft-switching converter topology addressing these limitations and offers a new approach to developing the next generation of high-performance electric vehicle drivetrains. The minimal topology performs the required bi-directional DC-AC conversion in a single-stage structure and ensures zero-voltage switching of all power devices across the entire load range. Furthermore, the high-frequency operation reduces the size of the passive elements for a power-dense design, and leads to excellent converter dynamic with unique efficiency profiles. The fundamental operating principles are introduced in this paper and the concept is verified through simulation of a 25 kVA SSCSI drivetrain.


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    Title :

    Soft-Switching Current Source Inverter for Next-Generation Electric Vehicle Drivetrains


    Contributors:


    Publication date :

    2020-06-01


    Size :

    505670 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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