Title :
Calculation of electric and magnetic fields in simplified chambers of low-voltage circuit breakers
Author :
Wu, Yi ; Rong, Mingzhe ; Li, Jian ; Lou, Jianyong
Author_Institution :
State Key Lab. of Electr. Insulation for Power Equip., Xi´´an Jiaotong Univ.
fDate :
4/1/2006 12:00:00 AM
Abstract :
This paper is mainly devoted to the three-dimension calculation of the electric and magnetic fields in the simplified arc chamber of low-voltage circuit breakers. Coupled with the plasma flow field, the electric potential and current density in arc plasma are calculated according to the electric conductivity, which is mainly decided by the temperature. Based on the potential vector method, the magnetic flux density and the Lorentz force under the effect of the ferromagnetic splitter plates are obtained. Both the stationary and transient results of the calculation are discussed in detail
Keywords :
circuit breakers; circuit-breaking arcs; computational electromagnetics; current density; electric fields; electric potential; electrical conductivity; ferromagnetic materials; magnetic fields; magnetic flux; Lorentz force; arc plasma; current density; electric conductivity; electric fields; electric potential; ferromagnetic splitter plates; low-voltage circuit breakers; magnetic fields; magnetic flux density; plasma flow field; potential vector method; simplified arc chamber; Circuit breakers; Conductivity; Coupling circuits; Current density; Electric potential; Lorentz covariance; Magnetic fields; Magnetic flux density; Plasma density; Plasma temperature; Arc plasma; circuit breaker; temperature;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.871386
