scholarly journals Towards an Efficient Arc Simulation Framework

2017 ◽  
Vol 4 (1) ◽  
pp. 79-82 ◽  
Author(s):  
R. Fuchs ◽  
M. Mürmann ◽  
H. Nordborg
Keyword(s):  
Reference Data ◽  
Low Voltage ◽  
Circuit Breaker ◽  
Test Case ◽  
Simulation Framework ◽  
Root Model ◽  
Coupled Solution ◽  
And Control ◽  
Arc Root

Arc simulations require a coupled solution of the flow and electromagnetic equations. Despite of industrial interest, there is no established simulation framework available yet. We assess the usability of STAR-CCM+ for low voltage circuit breaker simulations using a test case of a model arc chamber, since this toolkit allows to define and control the simulation in a single environment. In spite of a partially implemented arc root model, the results agree well with reference data of previous publications.

scholarly journals 2D NUMERICAL SIMULATION OF MAGNETIC FIELD IN LOW-VOLTAGE CIRCUIT BREAKER

2020 ◽  
Vol 20 (4) ◽  
pp. 1049-1060
Author(s):  
ELENA OTILIA VIRJOGHE ◽  
MIHAIL FLORIN STAN ◽  
COSMIN COBIANU ◽  
NICOLAE FIDEL
Keyword(s):  
Magnetic Field ◽  
Power Distribution ◽  
Low Voltage ◽  
Physical Phenomenon ◽  
Circuit Breaker ◽  
Ferromagnetic Material ◽  
Electric Arc ◽  
The Finite Element Method ◽  
Splitter Plates ◽  
And Control

Low Voltage Circuit Breakers is used for the switching process in power distribution and control system. This process is accompanied by the occurrence of the electric arc between the fixed and mobile contact pieces of the apparatus. The electric arc is introduced into the quenching chamber formed of ferromagnetic iron splitter plates, divided into short arcs and then the arc may extinguish after passing the current through zero. Behavior of the electric arc in the extinguishing chamber influences the performance of these devices, the ferromagnetic material leading to the improvement of these performances. This article presents the calculation of the magnetic field components in the extinguishing chamber of the low-voltage circuit breaker of the 2000 A, 690 V manufactured by Schneider Electric and to describe the physical phenomenon and mathematical calculation of the electric arc in LVCB. The Ansys Multiphysics program is used to determine the spectrum of magnetic field components. This program is based on the finite element method for solving Maxwell equations.

Numerical Modeling of Arc Root Transfer During Contact Opening in a Low-Voltage Air Circuit Breaker

2008 ◽  
Vol 36 (4) ◽  
pp. 1074-1075 ◽  
Author(s):  
Yi Wu ◽  
Mingzhe Rong ◽  
Fei Yang ◽  
Anthony B. Murphy ◽  
Qiang Ma ◽  
...  
Keyword(s):  
Numerical Modeling ◽  
Low Voltage ◽  
Circuit Breaker ◽  
Air Circuit Breaker ◽  
Arc Root

scholarly journals Self-Consistent Modeling of Electrode Motion in a Model Circuit Breaker

2019 ◽  
Vol 6 (1) ◽  
pp. 99-102
Author(s):  
R. Fuchs
Keyword(s):  
Gas Flow ◽  
Low Voltage ◽  
Circuit Breaker ◽  
Computational Grid ◽  
Electrical Circuit ◽  
Gas Pressure ◽  
Circuit Breakers ◽  
Self Consistent ◽  
Coupled Solution ◽  
Model Circuit

<span lang="EN-US">Numerical simulations of low-voltage circuit breakers require a coupled solution of gas flow, electromagnetism, electrical circuit, and other aspects. Including electrode motion is challenging because the computational grid is deformed and data is to be exchanged among dedicated solvers. A central issue is to keep them synchronized. This is addressed with a single framework that allows for a continuously morphing grid and accounting for the cumulative effects of mechanics, Lorentz force, and gas pressure. It is shown that gas pressure has negligible effect.</span>

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