We discuss the effect of electromagnetic de-coupling in integral eddy currents analysis. The error introduced by neglecting a part of the mutual inductance is quantified, and we introduce a reliable error estimate for such a de-coupled system. The quality of the estimate is tested on a practical case. The error estimate introduced here can be used for automatic block partitioning in order to increase the convergence speed of iterative inversion procedures for inductance matrices.
Bottura et al. (Mon,) studied this question.