A NEW VECTOR ELEMENT IN THE VOLUME INTEGRAL-EQUATION METHOD FOR NONLINEAR MAGNETOSTATICS

To calculate nonlinear magnetostatics a new vector element in the volu me integral equation has been developed. The magnetization vector in a n element is expressed by using co- and contra-variant vectors corresp onding to the each surface of the hexahedron element. To accelerate th e conversion process, the iteration procedure has been divided into in itialization and convergence parts. The method has been applied to TEA M workshop problem 13 of IEEE. Its calculated results agree with the m easured data within 2%, indicating the method provides good accuracy.