A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous Machine

To find the temperature rise for high power density yokeless and segmented armature (YASA) axial flux permanent magnet synchronous (AFPMSM) machines quickly and accurately, a 3D lumped parameter thermal model is developed and validated experimentally and by finite element (FE) simulations on a 4 kW...

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Main Authors: Abdalla Hussein Mohamed, Ahmed Hemeida, Alireza Rashekh, Hendrik Vansompel, Antero Arkkio, Peter Sergeant
Format: Article
Language:English
Published: MDPI AG 2018-03-01
Series:Energies
Subjects:
Online Access:http://www.mdpi.com/1996-1073/11/4/774
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author Abdalla Hussein Mohamed
Ahmed Hemeida
Alireza Rashekh
Hendrik Vansompel
Antero Arkkio
Peter Sergeant
author_facet Abdalla Hussein Mohamed
Ahmed Hemeida
Alireza Rashekh
Hendrik Vansompel
Antero Arkkio
Peter Sergeant
author_sort Abdalla Hussein Mohamed
collection DOAJ
description To find the temperature rise for high power density yokeless and segmented armature (YASA) axial flux permanent magnet synchronous (AFPMSM) machines quickly and accurately, a 3D lumped parameter thermal model is developed and validated experimentally and by finite element (FE) simulations on a 4 kW YASA machine. Additionally, to get insight in the thermal transient response of the machine, the model accounts for the thermal capacitance of different machine components. The model considers the stator, bearing, and windage losses, as well as eddy current losses in the magnets on the rotors. The new contribution of this work is that the thermal model takes cooling via air channels between the magnets on the rotor discs into account. The model is parametrized with respect to the permanent magnet (PM) angle ratio, the PM thickness ratio, the air gap length, and the rotor speed. The effect of the channels is incorporated via convection equations based on many computational fluid dynamics (CFD) computations. The model accuracy is validated at different values of parameters by FE simulations in both transient and steady state. The model takes less than 1 s to solve for the temperature distribution.
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spelling doaj.art-1f66d30706be4968b3f1a9f2b5904ab92022-12-22T03:58:44ZengMDPI AGEnergies1996-10732018-03-0111477410.3390/en11040774en11040774A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous MachineAbdalla Hussein Mohamed0Ahmed Hemeida1Alireza Rashekh2Hendrik Vansompel3Antero Arkkio4Peter Sergeant5Department of Electrical Machines, Metals, Mechanical Constructions and Systems, Ghent University, 9052 Ghent, BelgiumDepartment of Electrical Power and Machines, Cairo University, Giza 12613, EgyptDepartment of Flow, Heat and Combustion Mechanics, Faculty of Engineering and Architecture, Ghent University, B-9000 Ghent, BelgiumDepartment of Electrical Machines, Metals, Mechanical Constructions and Systems, Ghent University, 9052 Ghent, BelgiumAalto University, Department of Electrical Engineering and Automation, P.O. Box 13000, FI-00076 Espoo, FinlandDepartment of Electrical Machines, Metals, Mechanical Constructions and Systems, Ghent University, 9052 Ghent, BelgiumTo find the temperature rise for high power density yokeless and segmented armature (YASA) axial flux permanent magnet synchronous (AFPMSM) machines quickly and accurately, a 3D lumped parameter thermal model is developed and validated experimentally and by finite element (FE) simulations on a 4 kW YASA machine. Additionally, to get insight in the thermal transient response of the machine, the model accounts for the thermal capacitance of different machine components. The model considers the stator, bearing, and windage losses, as well as eddy current losses in the magnets on the rotors. The new contribution of this work is that the thermal model takes cooling via air channels between the magnets on the rotor discs into account. The model is parametrized with respect to the permanent magnet (PM) angle ratio, the PM thickness ratio, the air gap length, and the rotor speed. The effect of the channels is incorporated via convection equations based on many computational fluid dynamics (CFD) computations. The model accuracy is validated at different values of parameters by FE simulations in both transient and steady state. The model takes less than 1 s to solve for the temperature distribution.http://www.mdpi.com/1996-1073/11/4/774YASAAFPMSMLPTNthermal modelaxial flux machinesFEM
spellingShingle Abdalla Hussein Mohamed
Ahmed Hemeida
Alireza Rashekh
Hendrik Vansompel
Antero Arkkio
Peter Sergeant
A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous Machine
Energies
YASA
AFPMSM
LPTN
thermal model
axial flux machines
FEM
title A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous Machine
title_full A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous Machine
title_fullStr A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous Machine
title_full_unstemmed A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous Machine
title_short A 3D Dynamic Lumped Parameter Thermal Network of Air-Cooled YASA Axial Flux Permanent Magnet Synchronous Machine
title_sort 3d dynamic lumped parameter thermal network of air cooled yasa axial flux permanent magnet synchronous machine
topic YASA
AFPMSM
LPTN
thermal model
axial flux machines
FEM
url http://www.mdpi.com/1996-1073/11/4/774
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