Integral formulation for losses computation in tripolar submarine cables with shield wires, moisture barriers and armor

Method–of–Moments (MoM) is coupled with PEEC in order to compute Joule and hystheresis losses in the armor, shields and moisture barriers of a submarine tripolar cable. The large size and complex structure of the linear algebraic system resulting from the problem discretization demands for a suitably tailored solver. We describe a block–Gauß–Seidel preconditioner for Krylov subspace methods that allows for a matrix–free solver implementation, resulting in a dramatic reduction of computation time and memory requirements w.r.t. other brute–force modeling approaches.