New Numerical Integration Routine for the Nonorthogonal PEEC Approach

This contribution focuses on special aspects regarding numerical integration routines for nonorthogonal PEEC cells. By using averaged orthogonal subelements in the numerical integration routine, the slow convergence caused by the singularities is avoided and consequently, a fast evaluation of the self terms is enabled. The approach is verified by a spiral planar coil with a wire of circular cross section. Here, the current density is computed by the proposed algorithm and compared with FEM results showing a good agreement.