Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker

Xiaoze Pei, Oliver Cwikowski, Alexander C. Smith, Mike Barnes

Research output: Contribution to journalArticle

6 Citations (Scopus)
4 Downloads (Pure)

Abstract

Direct current (DC) circuit breakers are a key enabling technology for fault management in multiterminal high-voltage DC (HVDC) systems. DC fault isolation is challenging due to the high rate of rise of the fault current and the lack of natural current zero-crossings found in ac systems. In this paper, we present a novel superconducting hybrid dc circuit breaker that utilizes the intrinsic characteristics of the superconductor material. The automatic quench of the superconductor coil as a result of a high fault current transfers the current from the mechanical switch to the semiconductor switch. The isolating mechanical switch is able therefore to open at low current and recover its dielectric capability rapidly. A low voltage DC circuit breaker prototype has been built using a multistrand magnesium diboride (MgB 2) coil, a vacuum interrupter, and an insulated-gate bipolar transistor module. This prototype successfully demonstrated interruption of 500 A DC within 4.4 ms. This paper presents the design of the superconducting hybrid breaker prototype and a detailed analysis of the experimental results. This superconducting hybrid dc circuit breaker has significant potential for scaling up the high-voltage and high-current applications.

Original languageEnglish
Article number8258996
JournalIEEE Transactions on Applied Superconductivity
Volume28
Issue number3
DOIs
Publication statusPublished - 1 Apr 2018

Fingerprint

circuit breakers
Electric fault currents
Electric circuit breakers
direct current
Switches
Semiconductor switches
Insulated gate bipolar transistors (IGBT)
Electric potential
switches
prototypes
Superconducting materials
Vacuum
coils
roots of equations
interruption
low currents
strands
low voltage
high current
high voltages

Keywords

  • DC circuit breaker
  • hybrid circuit breaker
  • magnesium diboride
  • mechanical switch
  • MgB2
  • semiconductor switch
  • superconducting coil

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker. / Pei, Xiaoze; Cwikowski, Oliver; Smith, Alexander C.; Barnes, Mike .

In: IEEE Transactions on Applied Superconductivity, Vol. 28, No. 3, 8258996, 01.04.2018.

Research output: Contribution to journalArticle

Pei, Xiaoze ; Cwikowski, Oliver ; Smith, Alexander C. ; Barnes, Mike . / Design and Experimental Tests of a Superconducting Hybrid DC Circuit Breaker. In: IEEE Transactions on Applied Superconductivity. 2018 ; Vol. 28, No. 3.
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