Performance improvement of a high-speed permanent magnet excited synchronous machine by flux-barrier design

Abstract

Due to their high power density and high overall efficiency permanent magnet excited synchronous machines are beneficial to be applied in traction drives of full electric or hybridelectric vehicles with limited installation space. To improve the performance, additional flux-barriers can be inserted to the rotor of the machine. In this paper, the effects of different flux-barrier positions and sizes are systematically studied. Command variables for the improvement are average torque, torque ripple, total harmonic distortion of the back-emf, iron losses and efficiency.

Complete and accurate modular numerical computation scheme for multi‐coupled electric drive systems

“…The goal of these simulations is to refine the geometry of the machine due to better performance and to analyse specific impacts. An example of the analyses of such specific impacts is the effects of flux barriers that are described in [25] or the effect of cutting edges onto the electromagnetic behaviour, which is described in Section 4 and the scientific publications [26,27]. In the refinement process of the machine geometry, individual machine parameters or combinations of them are iteratively varied to find the best possible parameter combination for the given specification.…”