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차세대 고속전철 주행에 따른 이선현상이 전력변환 상호간에 미치는 영향분석
김재문(JaeMoon Kim),장진영(ChinYoung Chang),김양수(YangSoo Kim),안정준(JeongJoon Ahn),김연준(YeonJoon Kim) 대한전기학회 2009 대한전기학회 학술대회 논문집 Vol.2009 No.4
Electromagnetic Interference(EMI) in electric railway operation has become increasingly important. The components within very high power electronic, and the circuits for treating low-level signals, comprise complex system that must coexist and be highly reliable. To study it, It were included how much the HEMU-400X generates EMI and it has an effect on the power conversion units which resulted from Power Line Disturbance (PLD) phenomenon by contact loss during its running. In this study, the dynamic characteristic of a contact wire and pantograph suppling electrical power to high-speed trains are investigated. The analysis of the loss of contact based on Power Simulator program software is performed to develop power line disturbance model suitable for high speed operation. It is confirmed that a contact wire and pantograph model are necessary for studying the dynamic behavior of the pantograph system.
차량용 안전관련 소프트웨어 개발을 위한 국제표준과 안전성 요구사항에 대한 연구
윤성현(Seonghyun Yun),김연준(Yeonjoon Kim),최윤자(Yunja Choi),김진삼(Jinsam Kim),안성호(Sungho Ahn) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
As the importance of software safety in automotive systems is getting more attention, there have been active movements toward international standards. This paper analyzes safety management concepts, software methods, and techniques, recommended in the international standards, such as IEC 61508, ISO CD 26262 and AUTOSAR. We have identified main characteristics of those international standards which can be used as a reference for automotive safety engineering, including development of safety standard & process and acquisition of safety-related certification in the automotive E/E/PE systems and software sector. This paper also surveys safety requirements defined in AUTOSAR and ISO CD 26262 which can be a basis for further safety requirements analysis, safety-function design, and implementation.