Numerical analysis of electromagnetic forces in low voltage AC circuit breakers using 3-D finite element method taking into account eddy currents

Autor:	S. Ito, T. Ota, Y. Takato, Yoshihiro Kawase
Rok vydání:	1998
Předmět:	Physics Numerical analysis Hardware_PERFORMANCEANDRELIABILITY Mechanics Fault (power engineering) Magnetostatics Finite element method Electronic Optical and Magnetic Materials law.invention law Eddy current Electrical and Electronic Engineering Alternating current Low voltage Circuit breaker
Zdroj:	IEEE Transactions on Magnetics. 34:2597-2600
ISSN:	0018-9464
DOI:	10.1109/20.717600
Popis:	It is necessary for the optimum design of low voltage circuit breakers to analyze electromagnetic forces acting on the contact systems when the circuit breakers interrupt fault currents. In this paper, the forces which are known as the magnetic blowout force acting on the arc and the electromagnetic repulsion force acting on the moving contact arm are obtained by using the 3-D finite element analysis taking into account eddy currents. It is shown that our 3-D analysis is capable of evaluating a new design of contact systems in low voltage ac switching devices.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e9876980e2605239f25de0d11a17b470 https://doi.org/10.1109/20.717600 Zobrazit plný text záznamu