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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Journal ArticleDOI
Overview of Electric Motor Technologies Used for More Electric Aircraft (MEA)
TL;DR: The analysis suggests that the dual (or triple) three-phase PMAC motor drive may be a favored choice for general aerospace applications, striking a balance between necessary redundancy and undue complexity, while maintaining a balanced operation following a failure.
Journal ArticleDOI
Performance Comparison Between Surface-Mounted and Interior PM Motor Drives for Electric Vehicle Application
TL;DR: A comparison between interior PM and surface-mounted PM (SPM) motors is carried out, in terms of performance at given inverter ratings, showing that the two motors have similar rated power but that the SPM motor has barely no overload capability, independently of the available inverter current.
Journal ArticleDOI
Analysis of Air-Gap Field Modulation and Magnetic Gearing Effects in Switched Flux Permanent Magnet Machines
Zhongze Wu,Zi-Qiang Zhu +1 more
TL;DR: In this paper, the authors analyzed the magnetic gearing effect in SFPM machines with different stator/rotor pole combinations, winding configurations, and stator lamination segment types by a simple magnetomotive force-permeance model, and validated by finite element (FE) analysis.
Journal ArticleDOI
2-D Exact Analytical Model for Surface-Mounted Permanent-Magnet Motors With Semi-Closed Slots
TL;DR: In this article, an analytical subdomain model is presented to compute the magnetic field distribution in surface-mounted permanent magnet motors with semi-closed slots, which accurately accounts for armature reaction magnetic field and mutual influence between the slots.
Journal ArticleDOI
Advanced High-Power-Density Interior Permanent Magnet Motor for Traction Applications
Ayman El-Refaie,James Pellegrino Alexander,Steven Galioto,Patel Bhageerath Reddy,Kum-Kang Huh,Peter de Bock,Xiochun Shen +6 more
TL;DR: In this paper, the authors provide details of the design, analysis, and testing of an advanced interior permanent magnet (PM) machine that was developed to meet the FreedomCAR 2020 specifications.
References
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Journal ArticleDOI
Permanent magnet brushless machines with unequal tooth widths and similar slot and pole numbers
TL;DR: In this paper, a comparative study of three-phase permanent magnet brushless dc motors with similar slot and pole numbers is presented, with reference to conventional brushless DC machines in which the ratio of the slot number to pole number is usually 3 : 2.
Journal ArticleDOI
Parasitic effects in PM machines with concentrated windings
F. Magnussen,H. Lendenmann +1 more
TL;DR: In this article, both traditional and modular concentrated windings are analyzed, as well as double-layer and single-layer windings for ripple torque minimization in permanent magnet machines.
Proceedings Article
Investigation on Pole-Slot Combinations for Permament Magnet Machines with Concentrated Windings
Florence Libert,Juliette Soulard +1 more
TL;DR: In this paper, the authors investigated pole-slot combinations for permament magnet machines with concentrated windings, and found that the results showed that the magnet machines performed well.
Journal ArticleDOI
Experimental verification of optimal flux weakening in surface PM machines using concentrated windings
TL;DR: Comparisons between analytical, finite element analysis (FEA), and experimental results are presented that confirm the ability of fractional-slot concentrated winding SPM machines to achieve their high-speed operating objectives.
Journal ArticleDOI
Flux switching motors for automotive applications
TL;DR: In this paper, a new class of brushless motor is presented as an alternative to the permanent magnet brushed motor used in the automotive industry, which is a very simple motor to manufacture and coupled with a power electronic controller requiring only two power semiconductor switches.
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