Field Winding Resistance of a Pulsed Electromagnet

Abstract

When analyzing the powerful pulsed electromagnets used in seismic sources, it is necessary to take into account the current displacement in conductors of the winding. In this paper, the possibility of determining theoretically the time dependence of winding resistance using the Field factor, Maxwell software, and equations of electrodynamics to calculate the time constant of field penetration into a conductor in the case of current jump has been analyzed. The small duration of leading current edge in the winding of an electromagnet allows these equations to be used.