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This paper presents the concept of a novel hybrid-excitation machine. This machine is of the parallel excitation type and has rotor poles in which both PMs and wound-excitation co-exist to produce the total no load magnetomotive force; for this reason it is named mixed-pole hybrid-excitation machine. Due to its parallel excitation nature, the machine has excellent flux linkage regulation properties...
The circumferential cooling system, which provides highly effective, integrated but low-cost motor cooling, is introduced. This work is focussed particularly on magnetic effects, which arise from the special construction of the stator core. An explanation for the existence of inter-laminar flux is given and equations for the prediction of its absolute value are derived. Two approaches, an analytical...
This paper presents a gearless wheel motor drive system specifically designed for fuel cell electric and hybrid electric vehicle propulsion application. The system includes a liquid-cooled axial flux permanent-magnet machine designed to meet the direct-drive requirements. The machine design implements techniques to increase the machine inductance in order to improve machine constant power range and...
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