A New Partitioned Stator Machine with Halbach Permanent Magnet Array

The partitioned stator (PS) machine allows the windings and permanent magnets (PMs) to separate, avoiding the crowded space in the stator. In this paper, a new PS-PM consequent-pole machine is proposed, in which Halbach PM array is designed. For evaluation, the proposed PS-PM machine is compared with two existing PS-PM machines, namely the consequent-pole one and the switched-flux PM machine, based on the back-EMF, average torque and cogging torque. By using the finite-element analyses, the results reveal that among three PS-PM machines, the proposed one has the highest average torque, and the lowest torque ripple.