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.
초록·키워드
In this paper, design methodologies and topologies for modular multilevel converter (MMC), aimed at constructing (DC) railway power supply systems based on converter stations, are proposed. Traditional railway systems use railway vehicles that receive power through 25 kV AC supply lines and convert the single-phase AC 25 kV to DC 1.5 kV using 60 Hz transformers and converters. This process necessitates the use of large electrical components in the vehicles for the conversion from AC 25 kV to DC 1.5kV. The recent focus has been on configuring railway lines as DC ±20 kV and using bidirectional DC/DC converters to integrate with renewable energy sources through a DC multi-terminal topology, with the goal of extending the DC grid transmission and distribution system to railway systems. Urban railway vehicles operate with a 1.5 kV DC power supply system; thus, various topologies can be constructed for such DC power supply lines. In this paper, DC multi-terminal topologies for railway systems, consisting of an H-bridge-based three-phase monopolar AC/DC MMC converter and an isolated DC/DC MMC converter, are proposed. A parameter design methodology for MMC converters was suggested to implement the proposed DC multi-terminal topologies, and their active and reactive power control performance were verified through PSCAD simulation.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.