Title :
Shield-shape design for vacuum circuit breakers
Author :
Zhao, Zhizhong ; Wang, Youhua ; Liu, Tao ; Peng, Lixiao
Author_Institution :
Hebei Univ. of Technol., Tianjin
Abstract :
Electric field optimization is the key task for vacuum circuit breakers design. By the electric field calculation, the isopotential of a semi-plane flat electrode with infinitesimal small thickness is almost hemicycle, and the figure of an actual shield should be what the isopotential rotates around its shaft for a circular course, but not other figures. Three common figures of middle shield have been calculated with electric field calculating software, by which the conclusion is validated. The radius of round-corner of shield has an optimization value. In this way, more symmetrical electric field in vacuum interrupters is obtained and its peak value appears smaller.
Keywords :
electrodes; electromagnetic shielding; optimisation; vacuum circuit breakers; vacuum interrupters; electric field optimization; semi plane flat electrode; shaft isopotential rotation; shield-shape design; vacuum circuit breaker; vacuum interrupter; Circuit breakers; Convergence; Design methodology; Design optimization; Electrodes; Electromagnetic fields; Equations; Shafts; Shape; Vacuum technology;
Conference_Titel :
Electrical Machines and Systems, 2008. ICEMS 2008. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-3826-6
Electronic_ISBN :
978-7-5062-9221-4
