Abstract
An air circuit breaker (ACB) with novel double-breaker contact and permanent magnet actuator (PMA) is presented. Three-dimensional (3-D) finite element method (FEM) is employed to compute the electro-dynamic repulsion forces, including the Holm force and Lorentz force, which are acting on the static and movable contacts. The electro-dynamic repulsion forces of different contact pieces are computed, illustrating there is an optimal number of contact pieces for the ACB being studied. The electro-dynamic repulsion force of each contact, which varies from the outer position to the inner position, is also computed. Finally, the contacts of the double-breaker are manufactured according to the analyzed results to validate the simulations.
Original language | English |
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Pages (from-to) | 595-602 |
Number of pages | 8 |
Journal | Journal of Electrical Engineering and Technology |
Volume | 8 |
Issue number | 3 |
DOIs | |
Publication status | Published - 1 May 2013 |
Keywords
- Air circuit breaker
- Double-breaker contact
- Electromagnetic repulsion force
- Permanent magnet actuator
ASJC Scopus subject areas
- Electrical and Electronic Engineering