Journal of the Korean Society of Safety (한국안전학회지)

The Korean Society of Safety (한국안전학회)
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Analysis of Failure and Electrical Fire for Bolt Induction Heating System Using FTA

FTA를 이용한 볼트 유도가열시스템의 고장 및 전기화재 분석

  • Kim, Doo-Hyun (Department of Safety Engineering, Chungbuk National University) ;
  • Kim, Sung-Chul (Department of Safety Engineering, Chungbuk National University) ;
  • Eom, Haneol (Department of Safety Engineering, Chungbuk National University) ;
  • Kang, Moon-Soo (Department of Safety Engineering, Chungbuk National University) ;
  • Jeong, Cheon-Kee (DIK CO., LTD.)
  • Received : 2021.04.21
  • Accepted : 2021.08.02
  • Published : 2021.08.31
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Abstract

This paper presents a safety assessment method for FTA-based induction heating systems; the failures and causes of electrical fire are first analyzed for each part and module qualitatively, and methods to manage high probabilities of failure and electrical fire are considered, thereby improving the reliability of the induction heating system. The cumulative importance value (ACC) of the minimal cut set is drawn by setting failure as the top event, and STACK and SMPS are observed to account for about 70% of the induction heating system failures. Thus, intensively managing the basic events contained in the minimal cut set of failures for STACK and SMPS is expected to provide effective and stable operation of the induction heating system. When electrical fire is set as the top event, the STACK percentage is 90%. Accordingly, the current IGBT is changed to a FET to increase the applied voltage and prevent induction heating system failure, and a heat sink plane is installed to prevent FET heating caused by switching, thereby preventing an electrical fire. By classifying the parts and modules of the induction heating system in detail and by applying FTA based on actual failure rates and relevant data, more practical and reasonable results may be expected. Hence, continuous research must be conducted to ensure safety when using induction heating systems.

Keywords

Acknowledgement

This work was supported by the New Product R&D Program with Purchase Condition (S2780514, 2019) funded by the Ministry of SMEs and Startups.

References

  1. K. Park, J. J. Hwang, O. K. Kwon and J. H. Yun, "Development of Rapid Mold Heating System using Induction Heating", The Korean Society of Mechanical Engineers, pp. 11-16, 2006.
  2. Miyaden Co., LTD, "Induction Heating Machine", www.miyaden.com, 2021.
  3. S. C. Chen, H. S. Peng, W. R Chang and W. R. Jong, "Simulations and Verifications of Induction Heating on a Mold Plate", Int. Comm. Heat Mass Transfer, Vol. 31, pp. 971-980, 2004. https://doi.org/10.1016/j.icheatmasstransfer.2004.05.007
  4. Bolttech, "Induction Systems", www.bolttech.co.kr, 2021.
  5. H. K. Lim, System Safety Engineering, Hansol Academy, p. 93, 2012.
  6. D. H. Kim, S. C. Kim, E. S. Kim, K. G. Nam and C. K. Jeong, "Safety Assessment for PCS of Photovoltaic and Energy Storage System Applying FTA", J. Korean Soc. Saf., Vol. 34, No. 1, pp. 14-20, 2019. https://doi.org/10.14346/JKOSOS.2019.34.1.14
  7. Y. H. Park, D. H. Kim and S. C. Kim, "Minimal Cut Set of Electric Power Installations using Fault Tree Analysis", J. Korean Soc. Saf., Vol. 32, No. 1, pp. 41-46, 2017. https://doi.org/10.14346/JKOSOS.2017.32.1.41
  8. Reliability Information Anaysis Center, Failure Mode / Mechanism Distribution, 2016.
  9. KAERI, "AIMS-PSA Release 2 Reference Manual", 2015.
  10. FRONTS, "MADe software", http://www.frontis.co.kr, 2020.