Currents distribution analysis in nontransposed elementary conductors of a full-scale model bar

This paper deals with analysis of strand currents distribution in a model bar with non-transposed subconductors. The strand currents distribution are calculated with an analytical method (strips method) and are compared with the measured values using a full scale model bar test setup. The calculated results are close to the measured values of the strand currents and confirm the effectiveness of the strips method providing a good estimation of both strand currents and additional losses in winding bars (including Roebel bars) of high power electrical machines.