Electrical Machines for High Speed Applications with a Wide Constant-Power Region Requirement

Gerada, David; Borg-Bartolo, David; Mebarki, Abdeslam; Micallef, Christopher; Brown, Neil L.; Gerada, Chris

doi:10.11142/jicems.2012.1.3.274

Cited by 8 publications

(7 citation statements)

References 13 publications

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“…The rotor surface temperature was estimated at 300ºC using the thermal model similar to that described in [16] as detailed in [4] and correlations given in [17][18][19]. The input iron and copper losses are reported in Table I.…”

Section: ) Rotor Structural Evaluationmentioning

confidence: 99%

Design and Initial Testing of a High-Speed 45-kW Switched Reluctance Drive for Aerospace Application

Bartolo

Degano

Espina

et al. 2017

IEEE Trans. Ind. Electron.

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173

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Abstract-This paper presents innovative research towards the development of a 45 kW high speed switched reluctance drive as an alternative starter-generator for future aero-engines. To perform such a function the machine had to be designed with a very wide constant power-speed range. During enginestart/motoring mode, a peak torque demand of 54 Nm at 8 krpm was met, whilst in generating mode, 19.2-32 krpm, the machine was designed to deliver a constant power of 45 kW. The key enabling feature of the design lies in the novel rotor structure developed so as to allow for such a wide speed range. The results presented, are those measured during the initial testing phase and validate the system design and performance in the low-speed region with the machine operated in starting-mode. The measured machine power density is at 9.8 kW/ltr, whilst the global system efficiency is at 82%.

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Section: ) Rotor Structural Evaluationmentioning

confidence: 99%

Design and Initial Testing of a High-Speed 45-kW Switched Reluctance Drive for Aerospace Application

Bartolo

Degano

Espina

et al. 2017

IEEE Trans. Ind. Electron.

Self Cite

173

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“…Therefore, 8p/ 9s SMPM machine with double layer (concentrated) winding is considered for the rest of this work. It is well known [12,13] that such slot/pole combination presents high rotor losses due to the harmonic-rich components for the armature reaction field. This indicates a topology whose performance is very sensitive to the air gap thickness dimension and attention must therefore be given to this aspect [12].…”

Section: Electrical Motor Selectionmentioning

confidence: 99%

Design and optimization of a high power density machine for flooded industrial pump

Al-Timimy¹,

Degano²,

Giangrande³

et al. 2016

2016 XXII International Conference on Electrical Machines (ICEM)

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A note on versions:The version presented here may differ from the published version or from the version of record. If you wish to cite this item you are advised to consult the publisher's version. Please see the repository url above for details on accessing the published version and note that access may require a subscription.For more information, please contact eprints@nottingham.ac.uk Φ Abstract --This paper presents the design optimization procedure of a high power-density, permanent magnet synchronous machine for industrial pump applications. The designed machine drives an electric, oil flooded pump. In order to achieve higher torque-density, a fractional slot machine (8 poles, 9 slots) with double layer (concentrated) winding has been selected after a preliminary trade-off study, which considered several slot/pole combinations and winding configurations. The developed machine provides low torque ripple and short end windings, which contribute to lower axial length and higher efficiency. The electromagnetic performances have been evaluated by using finite element method and the lamination geometry has been optimized through a genetic. The final results are presented highlighting the achieved design targets.Index Terms-PMSM, high power density machine, finite element method, Genetic Algorithm (GA) optimization.

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“…Concentrated windings (tooth-wound coils) offer lower motor length for the same core length and lower copper losses. However, due to the large MMF harmonic content they can produce a large amount of parasitic losses at high speeds and high electrical frequencies [9,10]. Due to the constraints on envelope dimensions of the machine (stack length), a double-layer configuration is preferred to single-layer windings due to its shorter end windings, lower torque ripple, losses and more sinusoidal back-EMF [2,9].…”

Section: B Winding Configurationsmentioning

confidence: 99%

“…Therefore, the 8p/9s SMPM machine with double layer (concentrated) winding has been considered for the rest of this work. It is well known [9,10] that such a slot/pole combination presents high rotor losses due to the harmonicrich components for the armature reaction field. This indicates a topology whose performance is very sensitive to the air gap thickness dimension and attention must therefore be given to this aspect [10].…”

Section: Thermal Considerationsmentioning

confidence: 99%

Trade-off analysis and design of a high power density PM machine for flooded industrial pump

Al-Timimy

Calzo

et al. 2016

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society

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Abstract-This paper presents the trade-off analysis and design of a high power-density machine for industrial pump applications. The developed permanent magnet synchronous machine drives an electric, oil flooded pump. Different slot/pole combination and winding configuration have been investigated in order to identify the optimal combination that satisfies the electromagnetic and thermal constraint while keeping the losses as small as possible. Several strategies such as the use of the Cobalt iron material for the stator core lamination and the adoption of Halbach array have been investigated in this work to improve the performance capabilities of the designed machine. The electromagnetic performances have been evaluated by using a finite element method. Thermal behaviour has been determined using a lumped parameter network. The outcome of the thermal analysis helped to identify the optimal cooling configurations. The final results are presented highlighting the achieved design targets.

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Electrical Machines for High Speed Applications with a Wide Constant-Power Region Requirement

Cited by 8 publications

References 13 publications

Design and Initial Testing of a High-Speed 45-kW Switched Reluctance Drive for Aerospace Application

Design and Initial Testing of a High-Speed 45-kW Switched Reluctance Drive for Aerospace Application

Design and optimization of a high power density machine for flooded industrial pump

Trade-off analysis and design of a high power density PM machine for flooded industrial pump

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