A combined electromagnetic and thermal optimisation of an aerospace electric motor

Gilson, G. M.; Raminosoa, Tsarafidy; Pickering, Simon; Gerada, Chris; Hann, David

doi:10.1109/icelmach.2010.5607893

Cited by 16 publications

(7 citation statements)

References 18 publications

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“…The optimization of the fin extension , fin pitch and the number of fins which are illustrated in Fig. 1, are the main ways to increase the natural cooling performance [24][25][26][27][28][29]. The key design objective must be to maximize the rate of the heat dissipation, while minimizing the weight and volume of the cooling fins.…”

Section: A Natural Passive Coolingmentioning

confidence: 99%

“…In this paper, a detailed analysis of the active type cooling: the natural [21][22][23][24][25][26][27][28], forced air [29][30][31][32][33][34][35][36][37][38][39][40][41][42], forced liquid and phase change types [18,[66][67][68], are reviewed in Section II. On this basis, a comprehensive summary of the convection methods as applicable to the automotive traction motors cooling contexts have been provided with the advantages and disadvantages of each method being compared.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Cooling of Automotive Traction Motors: Schemes, Examples, and Computation Methods

Gai

Kimiabeigi

Chong

et al. 2019

IEEE Trans. Ind. Electron.

209

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This paper presents a comprehensive overview of the latest studies and analyses of the cooling technologies and computation methods for the automotive traction motors. Various cooling methods, including the natural, forced air, forced liquid and phase change types, are discussed with the pros and cons of each method being compared. The key factors for optimizing the heat transfer efficiency of each cooling system are highlighted here. Furthermore, the real life examples of these methods, applied in the latest automotive traction motor prototypes and products, have been set out and evaluated. Finally, the analytical and numerical techniques describing the nature and performance of different cooling schemes have been explained and addressed. This paper provides guidelines for selecting the appropriate cooling methods and estimating the performance of them in the early stages of their design. Index Terms-Automotive applications, cooling, traction motors, thermal analysis, numerical analysis. NOMENCLATURECross section area of heat path (m 2 ). , Linear current density (kA/m). , Inlet and outlet cross section areas (m 2 ). Specific heat capacity (J/kg). Diameter (m). , Friction loss factor (dimensionless). Gravitational attraction force (m/s 2 ). Grashof number (dimensionless). Fin extension (m). ℎHeat transfer coefficient (W/m 2 K). ℎLatent heat (kJ/kg). Loss coefficient (dimensionless).

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Section: A Natural Passive Coolingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cooling of Automotive Traction Motors: Schemes, Examples, and Computation Methods

Gai

Kimiabeigi

Chong

et al. 2019

IEEE Trans. Ind. Electron.

209

View full text Add to dashboard Cite

show abstract

“…Empirical relationships are limited to the specific geometries of a given machine [6]. Flow resistance networks in conjunction with correlations [7][8][9][10][11][12] provide an improved modelling technique, but are not able to provide the detail required to accurately predict the important surface heat transfer which dictates the conduction paths within the important solid windings and laminations [6,13]. Experimental testing of surface heat transfer is expensive and discrete so does not allow a full understanding of the heat transfer at the surfaces [14].…”

Section: Introductionmentioning

confidence: 99%

Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management

Connor

Pickering

Gerada

et al. 2013

IET Electric Power Applications

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This paper is the first in a series dedicated to investigating the airflow and thermal management of electrical machines. Due to the temperature dependent resistive losses in the machine"s windings, any improvement in cooling provides a direct reduction in losses and an increase in efficiency. This paper focuses on the airflow which is intrinsically linked to the thermal behaviour of the machine as well as the windage power consumed to drive the air through the machine. A full CFD model has been used to analyse the airflow around all major components of the machine. Results have been experimentally validated and investigated. At synchronous speed the experimentally tested mass flow rate and windage torque were under predicted by 4% and 7% respectively by the CFD. A break-down of torque by component shows that the fan consumes approximately 87% of the windage torque.

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“…where, , N, d, k and ∆ are maximum flux-density, the number of minor loops, thickness of the lamination material, a constant which will be chosen between k = 0.6-0.7, and the flux reversal associated with a given minor loop, respectively [13,14]. Rotor eddy-current loss becomes the dominant loss mechanism, contributing 83% of the total loss [15].…”

Section: Losses Calculation Of the Arwmmentioning

confidence: 99%

Losses Calculation of an Aerospace Retraction Wheel Motor with Regarding to Electromagnetic-Field Analysis Investigation

Asef¹,

Perpiñá²

2016

JEPE

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A 3-D FEA (finite element analysis) transient and steady-state design proposal for high-speed with Nd-Fe-Br (reversible) magnets in aerospace application will be examined under design considerations of n = 12,000 rpm, short-duty, sinusoidal drive, low cogging, high efficiency at peak torque, and etc. for an ARWM (aerospace retraction wheel motor). In construction, the PMs (permanent magnets) fixed on the rotor core which is surface-mounted magnets retained by a carbon-fiber bandage. Redundant windings, resistant to fault propagation have accounted. Besides, an axial water-jacket housing without end-cap cooling has involved. All performed characteristic performances of the correlated ARWM will verify by comparison through 2-D and 3-D FEA results. In this paper, design process has dealing with determination of various kinds of losses such as electromagnetic and mechanical losses. In terms of both classified losses, copper, stator back iron, stator tooth, PM, rotor back iron, air-friction and sleeve losses were calculated. The 3-D end-winding effects were included in the modeled ARWM by the authors.

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A combined electromagnetic and thermal optimisation of an aerospace electric motor

Cited by 16 publications

References 18 publications

Cooling of Automotive Traction Motors: Schemes, Examples, and Computation Methods

Cooling of Automotive Traction Motors: Schemes, Examples, and Computation Methods

Computational fluid dynamics modelling of an entire synchronous generator for improved thermal management

Losses Calculation of an Aerospace Retraction Wheel Motor with Regarding to Electromagnetic-Field Analysis Investigation

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