Author(s)

P. Scarpa, L. Spronck & W. Legros

Abstract

Computation of heat flux in a circuit-breaker electrode using temperature measurements P. Scarpa, L. Spronck & W. Legros o/ ,4pp W EWrzc%, [/Tz^er^^?/ o/ ABSTRACT This paper describes a numerical method developed to estimate the heat flux at the surface of a solid, using temperature measurements inside it. This inverse problem is solved while taking advantage of the available analytical solution of the direct problem. Moreover, the efficiency of the proposed algorithm appears when analysing several measurements because most of the calculations are made only once for all the records. INTRODUCTION During a current interruption process in a circuit-breaker, the energy dissipated in the electric arc is transmitted to the surrounding media (quenching gas, insulating nozzle, metallic contacts, ...). Specifically this paper deals with the problem of estimating the heat flux flowing from the arc column to the electrodes : this information is indeed very important to charac

Keywords