Evaluation of the off-state base-emitter voltage requirement of the SiC BJT with a regenerative proportional base driver circuit and their application in an inverter

McNeill, Neville and Jin, Bosen and Yuan, Xibo and Laird, Ian (2019) Evaluation of the off-state base-emitter voltage requirement of the SiC BJT with a regenerative proportional base driver circuit and their application in an inverter. IEEE Transactions on Industrial Electronics. ISSN 0278-0046

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    Abstract

    A strong candidate device for use in high-efficiency and high-density power converters is the SiC BJT, which requires a continuous gate (base) current to maintain its ON-state. A base driver circuit with regenerative collector current feedback using a current transformer, and a negative off-state base-emitter voltage is presented in this paper. The off-state base-emitter voltage required to prevent simultaneous conduction of a commercially available device when subjected to dv/dt’s is assessed. The device is then utilized in a three-phase DC to AC power converter where the efficacy of using the proposed base driver is evaluated. The off-state base-emitter voltage used is informed by the dv/dt tests. The converter is supplied from a 600-V DC rail, switches at 50 kHz and supplies a 4.1-kW load at a modulation index of 0.9. An efficiency of 97.4% was measured.

    Author(s):McNeill, Neville, Jin, Bosen, Yuan, Xibo and Laird, Ian
    Item type:Article
    ID code:69914
    Notes:© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Keywords:base driver, dv/dt, power converter, SiC BJT, simultaneous conduction, Electrical engineering. Electronics Nuclear engineering, Control and Systems Engineering, Computer Science Applications, Electrical and Electronic Engineering
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:24 Sep 2019 09:18
    Last modified:03 Nov 2019 03:30
    URI:https://strathprints.strath.ac.uk/id/eprint/69914
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