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

Neville McNeill, Bosen Jin, Xibo Yuan, Ian Laird

Research output: Contribution to journalArticle

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.
LanguageEnglish
JournalIEEE Transactions on Industrial Electronics
Early online date26 Sep 2019
DOIs
Publication statusE-pub ahead of print - 26 Sep 2019

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Power converters
Networks (circuits)
Electric potential
Electric instrument transformers
Rails
Switches
Modulation
Feedback

Keywords

  • base driver
  • dv/dt
  • power converter
  • SiC BJT
  • simultaneous conduction

Cite this

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title = "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",
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.",
keywords = "base driver, dv/dt, power converter, SiC BJT, simultaneous conduction",
author = "Neville McNeill and Bosen Jin and Xibo Yuan and Ian Laird",
note = "{\circledC} 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.",
year = "2019",
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T1 - 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

AU - McNeill, Neville

AU - Jin, Bosen

AU - Yuan, Xibo

AU - Laird, Ian

N1 - © 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.

PY - 2019/9/26

Y1 - 2019/9/26

N2 - 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.

AB - 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.

KW - base driver

KW - dv/dt

KW - power converter

KW - SiC BJT

KW - simultaneous conduction

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JO - IEEE Transactions on Industrial Electronics

T2 - IEEE Transactions on Industrial Electronics

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