Experimental Verification of a Self-Triggered Solid-State Circuit Breaker Based on a SiC BIFET

Matthaeus Albrecht; Andreas Huerner; Tobias Erlbacher; Anton J. Bauer; Lothar Frey

doi:10.4028/www.scientific.net/MSF.897.665

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HomeMaterials Science ForumMaterials Science Forum Vol. 897Experimental Verification of a Self-Triggered...

Experimental Verification of a Self-Triggered Solid-State Circuit Breaker Based on a SiC BIFET

Abstract:

In this work, the feasibility of the Bipolar-Injection Field Effect-Transistor (BIFET) [5] in two different Dual Thyristor type circuits [4] for an application as solid-state circuit breaker (SSCB) is experimentally verified. The Dual Thyristor type circuits are assembled from discrete silicon JFETs and a silicon carbide BIFET and are electrically characterized at various temperatures. The current-voltage characteristic shows the expected regenerative self-triggered turn-off capability under over-currents and the option to control the turn-off current by a passive resistor network. The issue with the adverse positive temperature coefficient of the trigger-current can be solved by putting the SiC BIFET in a cascode arrangement with a silicon Dual Thyristor. In this configuration the SiC BIFET provides the high voltage blocking capability and the silicon Dual Thyristor with its negative temperature coefficient controls the trigger-current. Transient analyses of both circuits indicate fast switching times of less than 50 μs seconds. It is demonstrated for the first time, that the SiC BIFET, due to its normally-on behaviour, used in a Dual Thyristor type circuit is a promising concept for self-triggered fuses in high current and high voltage applications.

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Periodical:

Materials Science Forum (Volume 897)

Pages:

665-668

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.897.665

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Online since:

May 2017

Authors:

Matthaeus Albrecht*, Andreas Huerner, Tobias Erlbacher, Anton J. Bauer, Lothar Frey

Keywords:

BiFET, Bipolar-Injection Field Effect-Transistor, Solid-State Circuit Breaker, SSCB

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