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Digital Library

of the European Council for Modelling and Simulation

 

Title:

Numerical Modeling And Experimental Results Of High Currents

Dismountable Contacts

Authors:

Ioan Popa, Ioan Cautil, Gheorghe Manolea, Florin Ocoleanu,

Dan Floricau, Serghie Vlase

Published in:

 

(2009).ECMS 2009 Proceedings edited by J. Otamendi, A. Bargiela, J. L. Montes, L. M. Doncel Pedrera. European Council for Modeling and Simulation. doi:10.7148/2009 

 

ISBN: 978-0-9553018-8-9

 

23rd European Conference on Modelling and Simulation,

Madrid, June 9-12, 2009

Citation format:

Popa, I., Cautil, I., Manolea, G., Ocoleanu, F., Floricau, D., & Vlase, S. (2009). Numerical Modeling And Experimental Results Of High Currents Dismountable Contacts. ECMS 2009 Proceedings edited by J. Otamendi, A. Bargiela, J. L. Montes, L. M. Doncel Pedrera (pp. 745-750). European Council for Modeling and Simulation. doi:10.7148/2009-0745-0750

DOI:

http://dx.doi.org/10.7148/2009-0745-0750

Abstract:

The paper presents an electro-thermal numerical model which can be used for the modelling and optimization of high currents dismountable contacts for dc current. The model is obtained by coupling of the electrokinetic field problem with the thermal field problem. The coupling is carried out by the source term of the differential equation which describes the thermal field. The model allows the calculation of the space distribution of the electric quantities (electric potential, the gradient of potential and the current density) and of the thermal quantities (the temperature, the temperature gradient, the Joule losses and heat flow). A heating larger than that of the current lead appears in the contact zone, caused by the contact resistance. The additional heating, caused by the contact resistance, is simulated by an additional source injected on the surface of contact. Using the model, one can determine the optimal geometry of dismountable contact for an imposed limiting value of the temperature

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