Title :
Study on static arc behaviors in a relay considering influence of the silver vapor
Author :
Zhou Xue ; Qi Le ; Liu Bo ; Zhai Guofu
Author_Institution :
Sch. of Electr. Eng. & Autom., Harbin Inst. of Tech., Harbin, China
Abstract :
The break arc simulation model for aerospace relay is built based on the magneto-hydrodynamics (MHD) theory. The contact erosion is considered and the electrical conductivey of the plasma sheath in the arc root region is equalized in this model. The static arc characteristics with silver vaper and nitrigen are acquired with the computational fluid dynamics (CFD) software FLUENT. The effect of the silver vapor on the static arc temperature and arc voltage is analysed. Experiment results are in accordance with the simulation results, which prove the rationality and validity of the arc model .
Keywords :
arcs (electric); avionics; computational fluid dynamics; electrical conductivity; electrical contacts; erosion; magnetohydrodynamics; nitrogen; plasma sheaths; relays; silver; Ag; FLUENT CFD software; MHD theory; N; aerospace relay; arc root region; arc voltage; break arc simulation model; computational fluid dynamics; contact erosion; electrical conductivity; magnetohydrodynamic theory; plasma sheath; relay; silver vapor effect; static arc behaviors; static arc temperature; MHD model; contact erosion; silver gas concentration; silver vapor;
Conference_Titel :
Electrical Contacts (ICEC 2012), 26th International Conference on
Conference_Location :
Beijing
Electronic_ISBN :
978-1-84919-508-9
DOI :
10.1049/cp.2012.0661
