Analytical comparison of conventional and modified winding for high speed bearingless permanent magnet synchronous motor applications

Abstract

A Bearingless high speed drive force generation is based on the superposition of two fields of different pole pairs differing by ± 1. This paper presents a comparison of electromagnetic properties between the conventional double distributed winding topology of bearingless motors with a non-conventional design, relevant for two pole bearingless drives. It will focus especially on the design equations, on the optimisation and its specific properties.