Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 2005.04a
- /
- Pages.61-63
- /
- 2005
Dynamic Characteristic Analysis of Permanent Magnetic Actuator with Multi-stage Coils for Vacuum Circuit Breaker
진공 차단기용 다단계 코일 영구 자석형 조작기의 동작 특성 해석
- Shin, Dong-Kyu (Seoul National University) ;
-
Kang, Jong-Ho
(Seoul National University)
;
- Bae, Chae-Yoon (Seoul National University) ;
-
Park, Sang-Hoon
(Seoul National University)
;
- Jung, Hyun-Kyo (Seoul National University)
- Published : 2005.04.28
Abstract
In this paper, a new type of permanent magnetic actuator (PMA) with multi-stage coils is proposed. Although the conventional type of PMA has many advantages, it cannot be applied in the high voltage circuit breakers due to its short stoke length. The new type of PMA has long stroke length by using multi-stage coils, so it can be applied as an actuator for the high voltage circuit breakers. Dynamic characteristics are calculated by the finite element method (FEM), equation of electric circuit and dynamic equation. The position of plunger and the current of coils in case of the actuator applied in 38kV, 40kA vacuum circuit breaker are presented.
Keywords