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Abstract
The single gate driven series connected power device stack possesses the advantages of high compactness and low cost. However, research of its short circuit (SC) characteristic remains uncovered. This article fills this gap and points out that, with the single gate driver it has the potential of over-current limitation. Furthermore, based on it, an improved single gate driven silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (mosfet) stack with strong antishort circuit fault capabilities is proposed. By adding auxiliary circuits to adjust the driving process of the single gate driver, the SiC mosfet stack can be automatically turned off in both SC conditions of fault under load and hard switch fault, while the normal working principle of the stack is not influenced. Neither active control nor overcurrent detection is required, which is the biggest merit of the proposed topology. Its design and analysis are presented in detail, followed by the validation by conducting simulations and experiments.
Original language | English |
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Journal | I E E E Transactions on Power Electronics |
Volume | 37 |
Issue number | 11 |
Pages (from-to) | 13577-13586 |
Number of pages | 10 |
ISSN | 0885-8993 |
DOIs | |
Publication status | Published - 1 Nov 2022 |
Keywords
- Circuit faults
- Gate drivers
- Logic gates
- MOSFET
- Short circuit fault
- Silicon carbide
- Threshold voltage
- Voltage control
- sic mosfet stack
- single gate driver
- single gate driver (GD)
- silicon carbide (SiC) metal-oxide-semiconductor field-effect transistor (mosfet) stack
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CoDE: Center of Digitalized Electronics (CoDE)
Munk-Nielsen, S., Jørgensen, A. B., Uhrenfeldt, C., Beczkowski, S. M., Ahmad, F., Meinert, J. D., Kubulus, P. P., Takahashi, M., Sun, Z., Wang, R., Gao, Y., Zäch, M. R., Meyer, S. & Steffensen, B.
01/01/2021 → 31/12/2025
Project: Research
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MEDIUM-VOLTAGE THREE-LEVEL CONVERTER USING SERIES CONNECTED 10KV/15KV SIC MOSFET
Wang, R., Munk-Nielsen, S., Uhrenfeldt, C., Jørgensen, A. B. & Kjær, P. R. J. C.
01/10/2020 → 30/09/2023
Project: PhD Project