논문 국내 국내전문학술지(KCI급) Wide Band Gap 소자를 적용한 철도차량용 보조전원장치에 관한 연구
- 학술지 구분 국내전문학술지(KCI급)
- 게재년월 2018-06
- 학술지명 전력전자학회 논문지
- 발행처명 전력전자학회
- 발행국가 국내
- 논문언어 한국어
홈페이지논문 초록 (Abstract)
In this paper, an auxiliary power supply (APS) for railroad cars is proposed. The APS can reduce the number of devices required to supply power through structural modification and operates at a high switching frequency by application of a SiC device. The voltage stress on the device in the proposed circuit can be reduced to less than half of the input voltage of the system; thus, a device with low breakdown voltage can be designed. By adapting a SiC device instead of an IGBT device, the proposed circuit can reduce switching and conduction losses and operate at a high switching frequency, thereby reducing output voltage and inductor current ripples in the proposed circuit. The theoretical analysis results of the proposed APS are verified with a 40 kW computer-based simulation and a 2 kW experiment.