인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2023.5
- 수록면
- 3,287 - 3,293 (7page)
이용수
초록· 키워드
This paper presents a high speed protection circuit to avoid IGBT failure caused by the short-circuit conditions such as hard switching fault (HSF) and fault under load (FUL). When a short circuit occurs, fast fault detection and protection circuits are necessary to limit the short-circuit current and a soft turn-off function is required to control the collector voltage overshoot during the IGBT turn-off transient. The proposed short-circuit fault detection is achieved by the integration of the collector current slew rate di/dt which can be sampled by the voltage across the parasitic inductance between the IGBT Kelvin emitter and power emitter. The di/dt is also applied to the proposed voltage controlled current source circuits VCCS1 and VCCS2 to regulate the gate drive current. The VCCS1 can control the di/dt under HSF and reduce the protection time under both HSF and FUL, resulting in short-circuit current limitation. The VCCS2 can control the collector voltage overshoot under various short-circuit current levels when the IGBT is shut down, achieving soft turn-off. The experimental results verify the good performance of the proposed short-circuit protection circuit.
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목차
- Abstract
- I. INTRODUCTION
- II. PRINCIPLE OF THE PROPOSED CIRCUIT
- III. EXPERIMENTAL VERIFICATION
- IV. CONCLUSION
- REFERENCES