Abstract
Electrical steel sheet have been widely employed as a magnetic core material of electromagnetic equipments. Magnetic materials in the equipments may be excited under two-dimensional AC-magnetization and/or AC-magnetization with DC-biased magnetization. However, the magnetic properties of electrical steel sheets under two-dimensional DC-biased magnetization have been scarcely researched. In this paper, we have inquired the magnetic properties of electrical steel sheet under a simple two-dimensional AC-magnetization with highly DC-biased magnetization of a direction perpendicular to AC-magnetization. We have found that the phase difference of between the fundamental components of B and H under high DC-biased condition becomes very smaller and phase compensation is very important in loss measurement. Also, we found that the magnetic loss under two-dimensional AC-magnetization is very sensitive to magnetic flux density waveform.
