The Journal of the Korea institute of electronic communication sciences (한국전자통신학회논문지)

Korea Institute of Electronic Communication Science (한국전자통신학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Architecture Design of Power Supply for SIL4 Safety Related System

SIL4 안전관련 시스템에 적합한 전원장치의 구조 설계에 대한 연구

  • 유등열 (광운대학교 일반대학원 제어계측공학과) ;
  • 이기서 (광운대학교 로봇학부)
  • Received : 2015.08.10
  • Accepted : 2015.09.23
  • Published : 2015.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

This paper introduces the architecture of the power supply in order to achieve the safety integrity target for power supply which is a part of safety related system. The integrity level for safety is set 4 and according to the IEC 62425 which is standard for railway application the architecture design is conducted and process for design is developed. The procedure for design consists with 6 steps. The architecture of power supply that is able to keep the safety integrity against of failure of power supply is derived through the analysis and it is suggested that the power supply adopted the result in this paper is suitable to apply in safety system. Also, the failure frequency that is a quantitative value for the power supply is proposed.

본 논문은 안전 시스템의 구성하는 요소 중 전원 장치에 대한 안전 무결성 목표를 설정하고, 설정된 목표를 달성하기 위한 전원 장치의 구조를 설계하였다. 해당 안전 시스템은 안전 최고 등급인 SIL4(Safety Integrity Level 4)를 목표로 하였으며, 철도 응용 분야의 규격인 IEC 62425에 부합하는 구조 설계 및 변경 프로세스를 정립하여 6단계의 기본 구조 설계 방안을 적용하였다. 본 연구에서는 전원 장치의 고장으로부터 시스템의 안전 무결성을 유지할 수 있는 전원 장치의 구조를 FMEA(Failure Modes and Effect Analysis) 기법을 사용하여 도출하였으며, 해당 결과를 적용한 전원 장치는 안전 시스템에 적용할 수 있다는 것을 제시하였다. 최종적으로 전원 장치 모듈에 대한 고장빈도의 정량적 목표치를 제시하였다.

Keywords

References

  1. IEC 62425, "Railway applications- Communication, signaling and processing systems - safety related electronic systems for signaling," IEC, Geneva, Switzerland, September 2007.
  2. IEC 61508, "Functional safety of electrical/electronic/ programmable electronic safety-related systems," IEC, Geneva, Switzerland, April 2010.
  3. IEC 62061, "Safety of machinery-Functional safety of safety-related electrical, electronic and programmable electronic control systems," IEC, Geneva, Switzerland, Jan. 2005.
  4. IEC 61511-1, "Functional safety-safety instrumented systems for the process industry sector," IEC, Geneva, Switzerland, Jan. 2003.
  5. IEC 61025, "Fault tree analysis(FTA)," IEC, Geneva, Switzerland, Dec. 2006.
  6. K. Chung, "Diagnosis of power supply by analysis of chaotic nonlinear dynamics," J. of the Korea Institute of Electronic Communication Sciences, vol. 9, no. 7, 2014, pp. 753-759. https://doi.org/10.13067/JKIECS.2014.9.7.753
  7. H. Shin, "Development of constant current SMPS for LED Lighting," J. of the Korea Institute of Electronic Communication Sciences, vol. 10, no. 1, 2015, pp. 111-116. https://doi.org/10.13067/JKIECS.2015.10.1.111
  8. Y. Jeong, "A study on control of generators based on SMPS," J. of the Korea Institute of Electronic Communication Sciences, vol. 7, no. 1, 2012, pp. 107-115. https://doi.org/10.13067/JKIECS.2012.7.1.107
  9. H. Shin, "Design of LED Driving SMPS for Large Traffic Signal Lamp," J. of the Korea Institute of Electronic Communication Sciences, vol. 4, no. 2, 2009, pp. 123-129.