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 (2020) 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, 67 (9). pp. 7179-7189. 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 bipolar junction transistor, 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 article. 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.

    • Item type:Article
      ID code:69914
      Dates:
      Date
      Event
      30 September 2020
      Published
      26 September 2019
      Published Online
      27 August 2019
      Accepted
      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:22 Aug 2021 01:55
      URI:https://strathprints.strath.ac.uk/id/eprint/69914
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