Abstract
The recent development of the numerical analysis of magnetic flux in electrical machines has given rise to a need for an accurate expression of the magnetic hysteresis process in core materials. In this investi- gation the idea of the Everett function, which is an integral form of the Preisach density function, was applied to simulate the hysteresis curves of practical core materials. The Everett function of various core materials was measured using a microcomputer- controlled hysteresis tracer and a mathematical for- mulation of the function was obtained. The formula can predict the hysteresis curves of the materials with good accuracy.
