Fractional-Slot Concentrated-Winding Axial-Flux Permanent-Magnet Machine With Core-Wound Coils

This paper presents the design, finite-element analysis (FEA), and experimental verification of a single-stator double-rotor fractional-slot concentrated-winding axial-flux permanent-magnet machine with core-wound coils. The advantages that are obtained by adopting such coil construction in terms of...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2012-03, Vol.48 (2), p.630-641
Main Authors: De Donato, G., Capponi, F. G., Caricchi, F.
Format: Article
Language:English
Subjects:
Axial-flux permanent-magnet (AFPM) machine
cogging torque
Coils
finite-element analysis (FEA)
fractional-slot concentrated winding (FSCW)
losses
Rotors
Stator cores
Stator windings
Torque
Windings
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Summary:This paper presents the design, finite-element analysis (FEA), and experimental verification of a single-stator double-rotor fractional-slot concentrated-winding axial-flux permanent-magnet machine with core-wound coils. The advantages that are obtained by adopting such coil construction in terms of shorter end-winding connections higher fill factor, and mechanical robustness of the magnetic structure are highlighted. Machine performances both at no load and at rated load are analyzed through static FEA, and a simple index is introduced to compare induced losses in the permanent magnets for various machine configurations. Time-stepped transient FEA is used to validate the index. The construction and experimental testing of a full-scale prototype is described to confirm the expected performances and to characterize the prototype in terms of losses (both at no-load and in loaded conditions), cogging torque, and main machine parameters.
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2011.2182024