Effect of Using Different Types of Magnet Wires on the AC Losses of Electrical Machine Windings

In high speed electrical machines, one of the main challenges that can be faced is the high frequency conduction losses in the machine windings due to both skin and proximity effects. This paper studies the effect of using different types of magnet wires on the AC losses of the electric machine windings. Using finite element modelling (FEM), the conductors are subdivided into multiple strands to calculate the losses in each conductor and in each layer. Further, aiming at loss minimization, different arrangements are introduced and compared at a wide range of frequencies. Moreover, recommendations are provided based on the obtained results and comparison.