Magnetic circuits analysis using electronic circuit analysis programs

Abstract

A number of computer programs are available for electronic circuit analysis. The utility of these programs can be extended to the analysis of complex nonlinear magnetic circuits by establishing analogous quantities as: voltage-magnetic potential, and current-magnetic flux. The essence of magnetic circuit analysis is to model each arm of the magnetic structure by a series connection of dependent voltage generators that represent developed and opposing magnetic potentials in the arm and a dependent current generator that represents the flux through the arm with the voltage across the current generator being the magnetic potential required by the reluctance of the arm. A simple inductor with DC bias and an air gap (Hanna inductor) is examined to bring out details of the analysis procedure.