Control of incoming drain currents drawn by super-junction MOSFETs in voltage source bridge-legs

Feng, Zhengyang and McNeill, Neville and Williams, Barry; (2020) Control of incoming drain currents drawn by super-junction MOSFETs in voltage source bridge-legs. In: 2020 9th International Conference on Renewable Energy Research and Application (ICRERA). IEEE, GBR, pp. 93-100. ISBN 978-1-7281-7369-6 (https://doi.org/10.1109/ICRERA49962.2020.9242794)

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Abstract

To increase the efficiency of renewable energy power conversion systems, traditional silicon IGBTs can be replaced with silicon super-junction MOSFETs. However, the poor performance of the MOSFET's intrinsic diode and the output capacitance present difficulties in voltage source converter bridge-legs. When a MOSFET in this circuit turns on, a charging current has to be sourced into the output capacitance of the complementary freewheeling MOSFET, even if the diode has been deactivated. The peak incoming drain current into the MOSFET turning on can be limited by using a large resistance in series with its gate. However, this increases MOSFET power dissipation. Also, the turn-on propagation delay time is increased. This paper presents a gate driver circuit for profiling the MOSFET's incoming drain current to provide an improved trade-off between incoming peak current, turn-on power dissipation, and delay time.

  • Item type:Book Section
    ID code:75883
    Dates:
    Date
    Event
    2 November 2020
    Published
    8 October 2020
    Accepted
    Notes:© 2020 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.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:22 Mar 2021 11:58
    Last modified:08 Apr 2024 14:07
    URI:https://strathprints.strath.ac.uk/id/eprint/75883
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