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This paper focuses on the 3-D effects associated with rotor step-skews performed in permanent magnet-assisted synchronous reluctance machines (PMA SynRMs). It analyzes and quantifies these effects via comparisons between 2-D and 3-D finite-element analyses (FEA) of skewed and unskewed machines. The 3-D phenomena manifested in the skewed PMA SynRM are identified into end-effects and axial interactions...
In this paper two different concentrated coil configurations for radial flux air-cored permanent magnet (RFAPM) machines are analysed and evaluated against a RFAPM machine that utilises overlapping coils. The comparative analysis of the different machines are done analytically. The analytical results are compared with finite element analysis results of simplified linearised equivalent models for the...
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