NDLI: Effect of stator shifting on harmonic cancellation and flux weakening performance of interior PM machines equipped with fractional-slot concentrated windings for hybrid traction applications

Content Provider	IEEE Xplore Digital Library
Author	Reddy, P.B. Kum-Kang Huh El-Refaie, A.
Copyright Year	2012
Description	Author affiliation: Electrical Propulsion Systems Laboratory, General Electric Global Research Center, Niskayuna, NY 12309 USA (Kum-Kang Huh) \|\| Electrical Machines Laboratory, General Electric Global Research Center, Niskayuna, NY 12309 USA (Reddy, P.B.; El-Refaie, A.)
Abstract	Electrical drive systems, which include electrical machines and power electronics, are a key enabling technology for advanced vehicle propulsion systems that reduce the petroleum dependence of the ground transportation sector. To have significant effect, electric drive technologies must be economical in terms of cost, weight, and size while meeting performance and reliability expectations. Interior Permanent Magnet (IPM) with fractional-slot concentrated-windings have been shown to be good candidates for hybrid traction applications. One of the key challenges is the additional stator mmf sub- and super-harmonic components that lead to higher losses in the rotor as well as saturation effects. This paper tries to address this issue by looking into the concept of stator shifting to cancel out the harmonics in fractional slot concentrated windings, while also considering the flux weakening performance under such effects. The novel aspects of the paper will be highlighted in the introduction section. The concept of stator shifting will be explained, the effect of varying the shift angle on the various harmonic components and winding factors will be investigated. Various designs, arising out of single layer and double winding layer 10-pole, 12-slot configuration along with double winding layer 16-pole, 18-slot configuration (targeting the FreedomCAR specifications), with varied shift angles are evaluated. The comparison between these designs in terms of their power density, efficiency and torque ripple is presented.
Starting Page	525
Ending Page	533
File Size	1515417
Page Count	9
File Format	PDF
ISBN	9781467308021
e-ISBN	9781467308038
e-ISBN	9781467308014
DOI	10.1109/ECCE.2012.6342776
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-09-15
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system measurements Density measurement Windings Stator windings Rotors Concentrated winding Harmonic-cancellation Interior permanent magnet Fractional slot Harmonic analysis Stator shifting
Content Type	Text
Resource Type	Article

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Generalized Approach of Stator Shifting in Interior Permanent-Magnet Machines Equipped With Fractional-Slot Concentrated Windings

Comparison of interior and surface PM machines equipped with fractional-slot concentrated windings for hybrid traction applications

Comparison of interior PM machines with concentrated and distributed stator windings for traction applications

Comparison of Interior and Surface PM Machines Equipped With Fractional-Slot Concentrated Windings for Hybrid Traction Applications

Effect of number of layers on performance of fractional-slot concentrated-windings interior permanent magnet machines

Unsaturated and saturated saliency trends in fractional-slot concentrated-winding interior permanent magnet machines

Integer-slot vs fractional-slot concentrated-winding axial-flux permanent magnet machines: Comparative design, FEA and experimental tests

Effect of Number of Layers on Performance of Fractional-Slot Concentrated-Windings Interior Permanent Magnet Machines

Scalability characteristics of magnetic circuit model for fractional-slot concentrated winding IPM machines

Effect of stator shifting on harmonic cancellation and flux weakening performance of interior PM machines equipped with fractional-slot concentrated windings for hybrid traction applications

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