Calculation of the current converters magnetic circuits taking into account the dependence nonlinearity of the specific magnetic resistance relative the magnetic induction

Abstract

The magnetic circuits of a current converter, the work principle of which is based on the nonlinearity of the magnetization curve, are considered. In order to improve the analytical calculation accuracy of magnetic circuits, it is necessary to establish a relationship between the specific magnetic resistance and magnetic induction. Methods for solving differential equations for magnetic circuits of a converter with longitudinally distributed parameters and an expression for the dependence of the specific magnetic resistance relative the magnetic induction are presented. Keywords electromagnetic current converter; magnetic circuit; nonlinearity of the magnetization curve; magnetic flux; magnetomotive force; quasi-linearization method; machine method of calculation