Magnetic Field Distribution in Solid Metallic Structures in the Vicinity of Current Carrying Conductors, and Associated Eddy-Current Losses

The analysis of the magnetic field distribution in conducting slabs in the presence of current carrying conductors and the calculation of eddy-current losses is presented. Integral expressions of field quantities have been developed for filamentary current sources and loss formulae established. A new approach to minimization and division of losses between composite shields is described. The equations are solved on a digital computer for different cases. Curves are plotted for several applications for practical use. An optimum thickness of shield for minimum power loss is also established.