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
Fractional-slot concentrated-windings: A paradigm shift in electrical machines
TL;DR: Fractional-slot concentrated-winding (FSCW) synchronous permanent magnet (PM) machines have been gaining a lot of interest over the last few years as discussed by the authors.
Proceedings ArticleDOI
Thermal management and cooling of windings in electrical machines for electric vehicle and traction application
TL;DR: In this paper, the authors classify thermal management and cooling methods to provide a guideline for high torque density electrical machine design for a better winding thermal management, such as impregnation material with high thermal conductivity, and advanced direct winding.
Journal ArticleDOI
Study of Direct-Drive Permanent-Magnet Synchronous Generators With Solid Rotor Back Iron and Different Windings
TL;DR: In this paper, the tradeoff between torque and the power factor, loss distribution, current, torque, and PM demagnetization characteristics under a short-circuit fault and the steady temperature rise are investigated and compared using finite-element analyses.
Journal ArticleDOI
Design and Analysis of a Five-Phase Fault-Tolerant Permanent Magnet Synchronous Motor for Aerospace Starter-Generator System
Yiguang Chen,Bo Liu +1 more
TL;DR: A novel five-phase fault-tolerant permanent magnet synchronous motor (FTPMSM) is designed for aerospace starter-generator (SG) system and simulation results show that the mutual inductance of different phase windings are almost zero, and the motor has good fault-Tolerant capability.
Journal ArticleDOI
On-Load Voltage Distortion in Fractional Slot Surface-Mounted Permanent Magnet Machines Considering Local Magnetic Saturation
Di Wu,Zi-Qiang Zhu +1 more
TL;DR: In this paper, the effect of on-load voltage distortion in fractional slot surface-mounted permanent magnet machines was investigated with the aid of frozen permeability method, and the mechanism of this phenomenon was investigated based on a 12-slot/8-pole model as an example.
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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Synthesis of high performance PM motors with concentrated windings
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