Abstract
A novel partitioned-primary hybrid-excited flux-switching linear machine with dual-PM (DP-PPHEFSLM) is proposed and investigated in this paper, which possesses many merits, i.e., high thrust density, improved space utilization, flexible flux control capability, robust secondary, etc. Unlike conventional single-primary hybrid-excited topologies, this proposed topology separates armature windings and field windings into two different parts of the partitioned-primary, with each part placed with sandwiched or buried PMs. It solves the problem of crowded primary in conventional structures due to greatly increased armature and field slot areas. Besides, the thrust density is further increased and the secondary normal force can be reduced by skillfully employing dual-PM structure. Firstly, the topology, operation principle and viable slot/pole combinations of the proposed machines are elaborately addressed. Based on 2-D finite-element method (FEM), the proposed machines are globally optimized using genetic algorithm. Then, the electromagnetic performances are further investigated. By these 2-D FEM predicted results, the proposed DP-PPHEFSLMs are manifested having not only superior thrust density, but also satisfactory flux-adjusting capability.
Published Version
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