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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.
|Number of pages||11|
|Journal||IEEE Transactions on Industrial Electronics|
|Early online date||26 Sep 2019|
|Publication status||Published - 30 Sep 2020|
- base driver
- power converter
- SiC BJT
- simultaneous conduction
FingerprintDive into the research topics of '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'. Together they form a unique fingerprint.
- Electronic And Electrical Engineering - Senior Research Fellow
Person: Research Only
- 1 Finished
Underpinning Power Electronics 2012: Converters Theme
Finney, S. & Holliday, D.
EPSRC (Engineering and Physical Sciences Research Council)
1/11/13 → 31/10/17