Browse > Article

Reliability Improvement of an Auto Transfer Switch  

Cho, Hyung Jun (Department of Industrial and Management Engineering, Kyonggi University)
Baek, Jung-Ho (Vitzro Tech)
Yeu, Bong-Ki (Vitzro Tech)
Kang, Tae-Seok (Vitzro Tech)
Kim, Kil-Sou (Vitzro Tech)
Yang, Il Young (Korea Testing Laboratory)
Yoo, Hwan Hee (Korea Testing Laboratory)
Yu, Sang Woo (Korea Testing Laboratory)
Kim, Yong Soo (Department of Industrial and Management Engineering, Kyonggi University)
Publication Information
Journal of Applied Reliability / v.16, no.2, 2016 , pp. 162-170 More about this Journal
Abstract
Purpose: The purpose of this study was to analyze the failure modes of an auto transfer switch (ATS), determine the most common failure mechanisms, and iterate the design to improve reliability. Methods: We carried out failure mode and effect analysis (FMEA) to determine the failure modes and mechanisms. We identified the parts or modules that required improvement via two-stage quality function deployment based on FMEA, and improvements to reliability were monitored using the Gomperz growth model. Results: The main failure modes of the ATS were damage to, and deformation of, the stator / movable element due to repetitive movements. Five iterations of design modification were carried out, and the mean time to failure (MTTF) increased to 14,539 cycles, corresponding to 85% of the target MTTF. The Gompertz growth model indicates that the 10th iteration of design modification is expected to achieve the target MTTF. Conclusion: We improved the reliability of mechanical parts via failure mode analysis, and characterized the iterative improvements in the MTTF using the Gompertz growth model.
Keywords
ATS; FMEA; QFD; Gompertz Growth Model;
Citations & Related Records
Times Cited By KSCI : 6  (Citation Analysis)
연도 인용수 순위
1 Chin, D. H., Woo, T. S. and Lee, C. W. (2002). "Reliability Analysis of Machinery System for Failure Mode and Effect Analysis". Proceedings of the KSMTE Autumn Conference, pp. 30-35.
2 Jung, W. (2010). "Reliability Estimation of Agricultural Machinery Components Based on QFD and Failure Mechanism Analysis". Journal of the Society of Korea Industrial and Systems Engineering, Vol. 33, No. 4, pp. 209-217.
3 Chung, W. S., Kwon, B. H., Ahn, K. Y. and Oh, I. S. (2003). "Dynamic Analysis of Driving Mechanism for ALTS with High-Speed Transfer Characteristics". Proceedings of the KSME 2003 Spring Annual Meeting, pp. 1530-1535.
4 Yi, J. S., Lee, E. C., Kang, G. E., Sin, H. S. and Choi, M. C. (2015). "A Study on Operating of Automatic Load Transfer Switches(ATLS)". Proceedings of KIEE Annual Conference, pp. 199-199.
5 Park, W. J., Ahn, K. Y. and Jeong, K. Y. (2005). "Impact and Fatigue Analysis of Superposed Leaf Spring in Electric Power Switch". Proceedings of the KSPE 2005 Autumn Conference, pp. 800-803.
6 Song, J. C., Kim, Y. G., Ryu, M. J. and Seo, J. M. (2002). "Dynamic Motion Analysis of a Moving Contact by Electromagnetic Repulsion Force in MCCB". Proceedings of the KIEE Summer Conference, pp. 786-789.
7 Park, J. W. et al. (2005). "Design of Environmental Tests". Journal of Applied Reliability, Vol. 5, No. 3, pp. 301-314.
8 Koh, J. et al. (2005). "Design of Durability Test for Mechanical Components". Journal of Applied Reliability, Vol. 5, No. 2, pp. 193-202.
9 Chang, M. S., Choi, B. O., Kang, B. S., Park, J. W. and Lee, C. S. (2013). "Reliability Analysis of Mechanical Component with Multiple Failure Modes". Transactions of the KSME A, Vol. 37, No. 9, pp. 1169-1174.   DOI
10 So, Y. K., Jeon, Y. R. and Ryu, B. J. (2014). "Assessing Process and Method Improvement of Reliability Growth Test Data with Growth Rate Changing During Testing". Journal of Applied Reliability, Vol. 14, No. 2, pp. 129-136.
11 Ko, J. et al. (2006). "Reliability Growth Program". Journal of Applied Reliability, Vol. 6, No. 1, pp. 13-26.
12 Kececioglu, D., Jiang, S. and Vassiliou, P. (1994). "The modified Gompertz reliability growth model". Reliability and Maintainability Symposium, 1994. Proceedings. Annual. IEEE, pp. 160-165.