NDLI: Design optimisation of self-powered gate driver for ultra-fast DC solid-state circuit breakers using SiC JFETs

Content Provider	IET Digital Library
Author	He, Dong Xiong, Zhijie Lei, Zhiqi Shuai, Zhikang Shen, Zheng John Wang, Jun
Abstract	Solid-state circuit breakers (SSCBs) inherently have excellent protection performance, thus they are popular for DC distribution protection. However, the safety and reliability of the SSCBs are limited by the rapid response ability of their own gate drivers. In this study, a self-powered SSCB with a normally-on silicon carbide (SiC) junction gate field-effect transistor (JFET) is proposed as the solid-state switch, whose gate drivers are optimised as well. First, both an optimised fault detection circuit and a designed forward–flyback DC/DC converter of the SSCB gate driver have been presented to achieve fast protection during the course of fault isolation. Then, the detailed analyses of the gate driver circuit parameters effect on protection speed are further investigated based on circuit theory and MATLAB calculation. In order to compare and analyse the dynamic responses of the SSCB with and without optimisation, the actual interruption tests of the fabricated SiC JFET circuit breaker prototype and the employed prototype 400 V DC distribution system have been carried out. The results show that the implementation approach is able to improve protection speed for the SSCBs within the order of a few microseconds.
Starting Page	2149
Ending Page	2156
Page Count	8
ISSN	17554535
Volume Number	10
e-ISSN	17554543
Issue Number	Issue 15, Dec (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/10/15
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2017.0283
Journal	IET Power Electronics
Publisher Date	2017-09-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Circuit Breaker DC Distribution Protection DC-DC Power Converter Distribution Network Driver Circuit Dynamic Response Fault Isolation Field Effect Device Forward–flyback DC-DC Converter Gate Driver Circuit Parameter Effect JFET Junction Gate Field Effect Transistors Junction Gate Field-effect Transistor MATLAB Calculation Optimised Fault Detection Circuit Optimised Gate Driver Power Distribution Protection Power Electronics Power Supply Protection Speed Self-powered Gate Driver Self-powered SSCB SiC Silicon Carbide Silicon Compound Solid-state Switch SSCB Gate Driver Supervisory Circuit Switch Ultra-fast DC Solid-state Circuit Breaker Voltage 400 V Wide Band Gap SemiConductor
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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