Performance analysis of fractional slot wound PM-motors for low speed applications

Salminen, P.; Niemelä, Markku; Pyhonen, J.; Mantere, J.

doi:10.1109/ias.2004.1348540

Cited by 54 publications

(23 citation statements)

References 2 publications

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“…These lead to unwanted parasitic effects, such as torque ripple, through stator MMF and permeance variation interaction. The harmonic content derives from the winding factors of particular winding patterns, which in turn depend on the number of poles and the stator tooth number [15]. Harmonic analysis of FSCW MMF waves and analysis of their effects on PMSM performance is detailed in [16].…”

Section: Cogging 2 Stator Mmf and Permeance Interaction 3 Stator MMmentioning

confidence: 99%

“…If < 1 the winding is a fractional slot concentrated winding. The FSCW can be split into two grades, depending upon n in a fractional q [15]; Grade I if n is even, which implies asymmetrical flux over a pole and Grade 2 if n is odd where symmetry exists over the pole. The grade of the winding affects the winding factors of the winding and thus directly affects the MMF harmonics and therefore the airgap field harmonics.…”

Section: Applicable Winding Harmonicsmentioning

confidence: 99%

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A Seminumerical Finite-Element Postprocessing Torque Ripple Analysis Technique for Synchronous Electric Machines Utilizing the Air-Gap Maxwell Stress Tensor

2014

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Section: Cogging 2 Stator Mmf and Permeance Interaction 3 Stator MMmentioning

confidence: 99%

Section: Applicable Winding Harmonicsmentioning

confidence: 99%

A Seminumerical Finite-Element Postprocessing Torque Ripple Analysis Technique for Synchronous Electric Machines Utilizing the Air-Gap Maxwell Stress Tensor

2014

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“…FSCW can then be split into Grade I and Grade II windings, based upon whether the denominator n, in eq. (4) is even or odd [21]. The grade determines the harmonic ordinates of the winding, dictating the winding factors and MMF harmonic spectra, which are calculated analytically.…”

Section: Disadvantages Of the Topologymentioning

confidence: 99%

Application of Fractional-Slot Concentrated Windings to Synchronous Reluctance Motors

Spargo

Mecrow

Widmer

et al. 2015

IEEE Trans. on Ind. Applicat.

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Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. show that the fractional slot-concentrated wound machine can exhibit a higher efficiency and torque density when compared to conventional synchronous reluctance and the induction motor and the electromagnetic model is validated through testing of a prototype machine with thermal results also reported. Despite the many benefits, high torque ripple and low power factor reduce the topologies desirability and are identified as an area of further research.

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“…The magnet form that was angularly balanced and asymmetrically placed was employed in order to reduce the cogging torque at the lower wind speeds in the PMSG. At the same time, the surfaces facing the stator sheets of the PMSG magnets were shaped in herringbone form for minimum cogging torque [8][9][10][11][12][13][14]. The cross-sectional view of the rotor, the stator, and the bedding of the PMSG is given in Figure 5.…”

Section: The Pmsg Of the Mwtmentioning

confidence: 99%

“…One of the methods of cogging torque reduction is based on the configuration of the stator slot number and the number of pole pairs. This results in the use of the fractional-slot stator winding [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Design, application, and power performance analyses of a micro wind turbine

Mamur¹

2015

Turk J Elec Eng & Comp Sci

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Abstract:In this study, design, implementation, and power performance analyses of a micro wind turbine (MWT) system are presented. An original permanent magnet synchronous generator (PMSG) that reduced cogging torque was employed as a generator in the MWT. A novel blade form offering better performance at low wind speeds was also utilized for the MWT blades. Power performance analyses of the MWT were carried out for different wind regimes by truck testing. Performance coefficient, cut-in, and cut-out of the MWT were determined as 27.7%, 2.7 m/s, and 20 m/s at the end of the truck testing, respectively. Moreover, a new supervisory control and data acquisition (SCADA) program based on a programmable logic controller was written to measure the electrical power of the MWT, and hence the analyses of the MWT were easily fulfilled through the SCADA.

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Performance analysis of fractional slot wound PM-motors for low speed applications

Cited by 54 publications

References 2 publications

A Seminumerical Finite-Element Postprocessing Torque Ripple Analysis Technique for Synchronous Electric Machines Utilizing the Air-Gap Maxwell Stress Tensor

A Seminumerical Finite-Element Postprocessing Torque Ripple Analysis Technique for Synchronous Electric Machines Utilizing the Air-Gap Maxwell Stress Tensor

Application of Fractional-Slot Concentrated Windings to Synchronous Reluctance Motors

Design, application, and power performance analyses of a micro wind turbine

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