This work deals with the additional losses minimization in the Roebel bar windings of high power synchronous generators. In order to solve this problem, in the paper is presented a strips-method that provides a high accuracy estimation of the elementary currents through the strand conductors. According to this method, the cross section of each strand in N parallel-strips with the slot basis was divided, so that the strip-current density could be considered as a constant. The aim of the paper is to analyze the computing-method errors and the influence of the strips number on these errors.

Keywords: High power synchronous machines, Roebel bar windings, Optimization.