Journal ArticleDOI
Fractional-Slot Concentrated-Windings Synchronous Permanent Magnet Machines: Opportunities and Challenges
TLDR
This paper will cover the theory and design of FSCW synchronous PM machines, achieving high-power density, flux-weakening capability, comparison of single- versus double-layer windings, fault-tolerance rotor losses, parasitic effects, compared of interior versus surface PM machine, and various types of machines.Abstract:
Fractional-slot concentrated-winding (FSCW) synchronous permanent magnet (PM) machines have been gaining interest over the last few years. This is mainly due to the several advantages that this type of windings provides. These include high-power density, high efficiency, short end turns, high slot fill factor particularly when coupled with segmented stator structures, low cogging torque, flux-weakening capability, and fault tolerance. This paper is going to provide a thorough analysis of FSCW synchronous PM machines in terms of opportunities and challenges. This paper will cover the theory and design of FSCW synchronous PM machines, achieving high-power density, flux-weakening capability, comparison of single- versus double-layer windings, fault-tolerance rotor losses, parasitic effects, comparison of interior versus surface PM machines, and various types of machines. This paper will also provide a summary of the commercial applications that involve FSCW synchronous PM machines.read more
Citations
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Proceedings ArticleDOI
Comparative thermal analysis of IPMSMs with integral-slot distributed-winding (ISDW) and fractional-slot concentrated-winding (FSCW) for electric vehicle application
TL;DR: In this paper, the thermal properties of fractional-slot concentrated-winding (FSCW) interior permanent magnet synchronous motors (IPMSMs) are investigated for electric vehicle (EV) applications.
Eddy-current losses in the solid back-iron of permanent magnet machines with concentrated fractional pitch windings
Polinder,Hoeijmakers,Scuotto +2 more
TL;DR: In this article, the eddy-current losses in the back-iron of PM machines with concentrated fractional-pitch stator windings were calculated. But the correlation between the model and the measurements is not perfect, some important conclusions can be drawn.
Proceedings ArticleDOI
Investigation of additional AC losses in tooth-coil winding PMSM with high electrical frequency
TL;DR: In this paper, the impact of the number of stator winding parallel strands on the additional AC losses distribution in the slot where this winding is located is analyzed. And the thermal condition (which impacts the life time of the insulation) of the winding is analyzed with different number of parallel strands.
Journal ArticleDOI
Three-phase current injection method for mitigating turn-to-turn short-circuit fault in concentrated-winding permanent magnet aircraft starter generator
TL;DR: A 24-slot, 16-pole FSCW-PMSG with spoke-type rotor topology is designed to confirm the ability of inhibiting turn-to-turn SC current without the risk of irreversible demagnetisation, and results are presented, verifying the effectiveness of the three-phase current injection control in restraining the turn- to- turn SC current for F SCW PMSG in an acceptable range.
Proceedings ArticleDOI
Analysis and comparison of axial-flux permanent-magnet brushless-DC machines with fractional-slot concentrated-windings
TL;DR: In this paper, axial-flux permanent magnet machines (AFPMMs) with fractional-slot concentrated-windings for brushless-DC operation are compared to study the effect of layer numbers, pole/slot combinations, and tooth widths on cogging torque, fault tolerance, and BLDC operation.
References
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Journal ArticleDOI
Synthesis of high performance PM motors with concentrated windings
Jerome Cros,Philippe Viarouge +1 more
TL;DR: In this article, the authors present a synthesis of the structures of three-phase machines with concentrated windings, and a comparative analysis of the performances of the original and traditional structures is performed by using a field calculation software.
Journal ArticleDOI
Field-weakening performance of brushless synchronous AC motor drives
Wen L. Soong,T.J.E. Miller +1 more
TL;DR: In this article, the theoretical and practical limitations to the field-weakening performance of surface permanent magnet, synchronous reluctance and interior permanent magnet motors when driven from an inverter with a limited volt-ampere rating were examined.
Journal ArticleDOI
Design considerations for fractional-slot winding configurations of synchronous machines
TL;DR: In this article, the authors presented some design considerations for synchronous machines characterized by a fractional number of slots per pole per phase, which is a smooth torque, due to the elimination of periodicity between slots and poles.
Proceedings ArticleDOI
Winding factors and Joule losses of permanent magnet machines with concentrated windings
F. Magnussen,Chandur Sadarangani +1 more
TL;DR: In this article, the authors describe methods for designing high performance permanent magnet machines with concentrated windings, including both single and double-layer configurations of concentric windings and verify their theory using FEM analysis.
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