Optimization of a Cam Profile in a Circuit Breaker to Improve Latching Performance

캠 윤곽 최적설계를 통한 차단기 래칭 성능 향상

Lee, Jae Ju;Jang, Jin Seok;Park, Hyun Gyu;Yoo, Wan Suk;Kim, Hyun Woo;Bae, Byung Tae

  • Received : 2015.08.20
  • Accepted : 2015.11.18
  • Published : 2016.01.01


Higher circuit breaker safety standards can be obtained by increasing the sustaining time of the latching section. This time increase is achieved through velocity reduction after contacting when the closing mechanism operates. The potential for the re-closing phenomenon to occur is also reduced by obtaining time to return open latch. In this study, the sustaining time for the latching section was increased through cam profile optimization based on the displacement response of the moving parts. In addition, the existing performance velocity was also satisfied. A multibody dynamics model of the circuit breaker was developed using ADAMS. To validate the model, simulation results were compared to experiment results. Then, cam profile optimization was carried out using an optimal design program PIAnO. Design variables selected included the radial direction of the cam. Design sensitivity analysis was carried out by design section as well. As a result of optimization, the sustaining time for the latching section was increased.


Cam Profile Optimization;Circuit Breaker;Design Sensitivity Analysis;Multi-body Dynamics


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Supported by : 부산대학교