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논문 기본 정보

자료유형
학술대회자료
저자정보
Donghoon Park (Koh Young Technology) Dongho Shin (Seoul National University) Seung-Ki Sul (Seoul National University) Jungwook Sim (LSIS) Young-Geun Kim (LSIS)
저널정보
전력전자학회 ICPE(ISPE)논문집 ICPE 2019-ECCE Asia
발행연도
2019.5
수록면
2,647 - 2,652 (6page)

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초록· 키워드

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Because of nature of the DC power distribution system, such as existence of power electronic converters with DC link capacitors and low system inductance, it has been known that the protection of DC system against short circuit fault would be difficult compared to AC system. The solid state circuit breaker (SSCB) is one of candidates for solution of DC protection thanks to its faster response and higher controllability and reusability compared to mechanical breaker or fuse. However, without proper overvoltage suppressing circuit, the overvoltage due to system inductance would collapse semiconductor switches in SSCB. In this paper, by the position of the inductance in the DC power distribution system, the effect of the inductance related to the SSCB overvoltage is analyzed. Also, the design of an overvoltage suppressing circuit absorbing the energy stored in the system inductance is addressed. And, a maximum operating range of the designed overvoltage suppressing circuit regrading system inductances is investigated. The effectiveness and performance of the overvoltage suppressing circuit is verified by the simulation and experimental results.

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Abstract
I. INTRODUCTION
II. SYSTEM INDUCTANCES ASSOCIATED WITH SOLID STATE CIRCUIT BREAKER
III. OVERVOLTAGE SUPPRESSING CIRCUIT DESIGN ACCORDING TO SYSTEM INDUCTANCES
IV. EXPERIMENTAL RESULTS
V. CONCLUSION
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