Loss minimization in high-speed Permanent Magnet Synchronous Machines with tooth-coil windings

Uzhegov, Nikita; Pyrhönen, Juha; Shirinskii, Sergey

doi:10.1109/iecon.2013.6699601

Cited by 18 publications

(7 citation statements)

References 18 publications

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“…The advantages of this topology are the simple rotor and stator construction and assembly process, a high efficiency and power factor, a sinusoidal back-EMF shape, and a short axial protrusion length of the end windings. The short end windings allow to achieve a short rotor length, which, in turn, increases the maximum rotational speed [12,13].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Materials for High-Speed PMSMS Having a Tooth-Coil Topology

Uzhegov¹,

Efimov-Soini²,

Pyrhönen³

2016

PIER M

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In this paper, materials frequently used in high-speed (HS) electrical machines are assessed. High-speed permanent magnet synchronous machines with a special tooth-coil topology serve as an example for the assessment. The lamination and rotor sleeve materials are compared taking into account their price, per unit losses, resistivity, and other factors. The resulting tables provide the electrical machine designer with a means to enhance the HS machine performance at low costs.

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Section: Introductionmentioning

confidence: 99%

Assessment of Materials for High-Speed PMSMS Having a Tooth-Coil Topology

Uzhegov¹,

Efimov-Soini²,

Pyrhönen³

2016

PIER M

Self Cite

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“…Figure 1 shows the obtained curve, which characterizes the decrease in the power density and efficiency as a power change function. The curve is based on the analysis of promising developments and industrially produced HSPM of the aviation systems [6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23]. Figure 1 shows that the minimum achieved energy density of commercial high-speed SG of the UAVs is 0.32-0.33 kg/kW at the power below 5 kW.…”

Section: Research Landscapementioning

confidence: 99%

“…In conditions of difficult heat removal from the rotor, these losses can lead to overheating of permanent magnets and failure of the entire SG. In [10][11][12][13][14][15][16][17][18][19][20][21][22], to determine the losses in permanent magnets, their crushing in the axial direction is used. The preliminary calculations show that the loss reduction is approximately 150-200% by crushing the permanent magnets from the one sector length of 50 mm to the one sector axial length of 5 mm.…”

Section: Machine Design and Optimizationmentioning

confidence: 99%

Design, Optimization and Initial Testing of a High-Speed 5-Kw Permanent Magnet Generator for Aerospace Application

Исмагилов¹,

Vavilov²,

Miniyarov³

et al. 2017

PIER C

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Abstract-The article presents a new topology of the high-speed synchronous electrical machines with permanent magnets with the tooth-coil windings with a stator magnetic core made of amorphous alloys for prospective unmanned aerial vehicles. This is a multidisciplinary design algorithm with optimization elements, which are proposed to design such machines. Based on the proposed algorithm, calculations of several topologies were performed by using computer simulation methods. In addition, the analysis of the rotor dynamics as part of the turbojet engine of the unmanned aerial vehicle and the calculations of the mechanical rotor strength were performed. To minimize the eddy-current losses in permanent magnets, the multicriteria optimization of the slotted zone was carried out by using genetic algorithms. A cooling system was proposed, and thermal calculations were performed. To verify the proposed design algorithm and to evaluate the efficiency of the amorphous alloy, a full-sized 5 kW experimental sample with a rotational speed of 60,000 rpm was created. Results can be used to create new promising UAVs and to design electrical machines for other industrial applications.

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“…Using this setup, the rotor was accelerated to 21,000 rpm and its temperature was measured. We measured energy losses at this temperature, and then, based on the dimensions and the rotor speed determined the coefficient of air-rotor friction using expression (1).…”

Section: Evaluating the Effectiveness Of Our Hsempm And Experimental mentioning

confidence: 99%

“…An important component of SAF, affecting both functioning of SAF and the energy efficiency is its power generator or the motor-generator [1].…”

Section: Introductionmentioning

confidence: 99%

Improving the Efficiency of Electrical High-RPM Generators With Permanent Magnets and Tooth Winding

Исмагилов¹,

Vavilov²,

Karimov³

2018

PIER M

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Abstract-This paper solves the problem of minimizing losses in the stator magnetic core of high-speed electric machines with the use of amorphous iron. A fundamentally new technology for manufacturing of a stator magnetic core from segments of amorphous steel is developed by the authors. The feature of the new stator design is the possibility to use technological ducts located inside the stator as cooling ducts. This aspect significantly improves the heat dissipation from the active zone of the stator and, accordingly, minimizing temperature. The efficiency of this solution was studied using two power generators of 100 kW and 200 kW and rotational speeds of 60,000 rpm and 45,000 rpm respectively in the software complex Ansys Maxwell. Harmonic compositions of currents and voltages, flux density distributions in active elements of the generator in various operating modes were studied: under load, in a three-phase short-circuit and at idle. Also, the obtained data were compared with analogous models of an electrogenerator made of electrical steel. The results of the study showed the operability and effectiveness of the proposed technology. Based on the results of the research, a prototype of the stator magnetic core made from amorphous iron was created. Losses in the generator were experimentally measured. Also the results of experimental studies of aerodynamic losses are presented.

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Loss minimization in high-speed Permanent Magnet Synchronous Machines with tooth-coil windings

Cited by 18 publications

References 18 publications

Assessment of Materials for High-Speed PMSMS Having a Tooth-Coil Topology

Assessment of Materials for High-Speed PMSMS Having a Tooth-Coil Topology

Design, Optimization and Initial Testing of a High-Speed 5-Kw Permanent Magnet Generator for Aerospace Application

Improving the Efficiency of Electrical High-RPM Generators With Permanent Magnets and Tooth Winding

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