Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Optimization of the Cam Profile of a Vacuum Circuit Breaker by Using Multibody Dynamics Techniques

다물체동역학기법을 이용한 진공 회로차단기의 캠윤곽 최적설계

  • Jang, Jin-Seok (Dept. of Mechanical & Automotive Engineering, Pukyong Nat'l Univ.) ;
  • Sohn, Jeong-Hyun (Dept. of Mechanical & Automotive Engineering, Pukyong Nat'l Univ.) ;
  • Yoo, Wan-Suk (Dept. of Mechanical Engineering, Pusan Nat'l Univ.)
  • 장진석 (부경대학교 기계자동차공학과) ;
  • 손정현 (부경대학교 기계자동차공학과) ;
  • 유완석 (부산대학교 기계공학부)
  • Received : 2010.12.01
  • Accepted : 2011.04.26
  • Published : 2011.07.01
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Abstract

Since the performance of a vacuum circuit breaker (VCB) mainly depends on the spring operating mechanism, an analysis of the spring operating mechanism is required in order to improve the design of a VCB. In this study, the static stiffness of the spring was determined by using a material testing machine, and the test results were used to model the spring through computer simulation. The multi-body dynamic model of the spring was established by using the RecurDyn program. The dynamic model was verified by comparing the results of stem displacements and rotating angles of the brake shaft obtained from the simulation and from the experiments. After verification of the dynamic model of VCB, the cam profile of the VCB was optimized through multi-body dynamics simulation in order to improve the performance of the closing mechanism.

진공회로차단기의 성능이 스프링조작기에 많이 좌우되기 때문에, 스프링조작기의 해석이 요구된다. 본 연구에서는 스프링의 특성시험을 먼저 수행한 후, 시험결과를 RecurDyn 프로그램을 이용한 컴퓨터시뮬레이션 스프링모델링에 이용하였다. 개발된 진공회로차단기의 다물체동역학 모델을 이용하여 차단기의 스템변위와 샤프트 회전각에 대한 시뮬레이션 하였으며, 시뮬레이션 결과를 시험과 비교 검증하였다. 검증된 다물체동역학 모델을 사용하여 차단속도를 증가시키기 위한 캠의 최적윤곽을 얻었다.

Keywords

References

  1. Tsujiuchi, N., 1995, "Optimum Design for Dynamic Characteristic of VCB," Asua-Pacific Vib, Conf., pp.810-815.
  2. Ahn, K. Y. and Jeong, K. Y., 2004, "Optimization of The Spring Design Parameters of a Circuit Breaker for Satisfying Specified Dynamic Characteristics," Journal of the KSPE, Vol.21, No.3, pp.132-138.
  3. Pisano, A.P. and Freudenstein, F., 1983, "An Experimental Analytical Investigation of the Dynamic Response of High-Speed Cam-Follower System Part:2 A Combined, Lumped/Distributed Parameter Dynamic Model," Transaction, ASME-Journal of Mechanisms, Transmission, and Automation in Design, Vol. 105, pp. 699-704. https://doi.org/10.1115/1.3258539
  4. FunctionBay, 2010, "RecurDyn V7R3 Advanced Training guide"

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  1. Optimum Design of Latch Position and Latch Length on Operating Mechanism of a Circuit Breaker using ADAMS and VisualDOC vol.38, pp.11, 2014, https://doi.org/10.3795/KSME-A.2014.38.11.1215