Dynamic Analysis of Operating Mechanism and Optimal Design of Permanent Magnetic Actuator in Permanent Magnetic Vacuum Circuit Breaker
| Autor: | Yu-Hong Zheng, 鄭裕弘 |
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| Rok vydání: | 2016 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 104 The vacuum circuit breaker (VCB) act as an interrupter switch in electric power loop to prevent the disaster caused by overload or short circuit. The VCB can divide into several components, including vacuum interrupter (VI), actuating mechanism and permanent magnetic actuator (PMA).The VI has different specification by applied voltage grade. While the two contacts separating, the magnetic field usually occurred between contacts in high voltage and high current, it makes unstable and degrade the performance of the breaker. In this research, the theorem of Euler-Lagrange Dynamic, conservation of linear momentum and impact of dynamics were applied to analyze the loading characteristic of operating linkages, velocity of movable contact and generating required magnetic force of the PMA in the closing duration. In other hands, the equivalent magnetic circuit methods were applied to analysis the equation between reluctance and magnetomotive force (m.m.f). The simulations of dynamic characteristic of operating mechanism and exciting magnetic force due to the mono-stable PMA were simulated by ADAMS/View and COMSOL Multiphysics, respectively. The algorithm of differential evolution (DE) was applied to optimize the geometric dimension of PMA, aim to reducing material using and total volume but having the same performance with the original design. The results of this study provide a reference for improving the design of operating mechanism, the performance of VCB and the design for required electric circle of the armature. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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