Using Measured Hysteresis Loop Family in Calculating the Eddy Current Losses

摘要

In the paper, the effect of hysteresis on the macroscopic eddy current losses is tested. Usually, the macroscopic eddy current losses are calculated with nonlinearity and magnetic hysteresis phenomenon neglected. The aim of the research was to check how magnetic hysteresis affects the eddy current losses. To achieve this, an algorithm able to take into account the hysteresis was previously constructed. The tests on various magnetic materials showed that the algorithm was only convergent for electrical sheets of small enough thickness. Moreover, the hysteresis loops in the algorithm have to be regular enough in order to convert between Bandn$H$nfields in the way ensuring the convergence. In this paper, an enhanced algorithm is presented, which is able to take into account a wider class of hysteresis loop families and its convergence is improved. The results of calculations show that including the measured hysteresis loop family into calculations yields usually noticeably smaller eddy current losses than those predicted with use of the classical formula.