Study of copper losses in the stator windings and PM eddy-current losses for PM synchronous machines taking into account influence of PWM harmonics

An accurate estimation of losses becomes more and more important in the design process of permanent-magnet (PM) synchronous machines (PMSM). This estimation is also a key issue of thermal design. Therefore, the study of losses (in particular non-conventional losses) is of great importance. In this paper, the authors present a calculation of the stator windings and PMs losses for different types of fed (i.e., sinusoidal and no sinusoidal current supply). The authors investigate using 2-D finite-element method (FEM): the effect of conductors´ segmentation on the copper losses.