Abstract
This article proposes a transverse-dislocated magnetic-field modulated brushless contra-rotating machine (TDMFM-BCRM) with multiunit structure for the contra-rotating propulsion system. Compared with the existing contra-rotating machines, it has the advantages of equal and opposite torque at any time, no brushes and no slip rings. The improved three-dimensional (3D) magnetic-field modulation principle by considering multiunit structure of the TDMFM-BCRM is investigated. Then, due to the structural complexity of the TDMFM-BCRM, there are some challenges about its manufacturing. Therefore, the performance of the TDMFM-BCRM adopting different core material combinations including electrical steel (ES) and soft magnetic composite (SMC) material is investigated. Meanwhile, a prototype is manufactured and tested to validate the theoretical analysis, finally more manufacturing methods for the TDMFM-BCRM are comparatively studied.
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