TY - JOUR
T1 - Air inlet/outlet arrangement for rotor cooling application of axial flux PM machines
AU - Fawzal, A. S.
AU - Cirstea, R. M.
AU - Woolmer, T. J.
AU - Dickison, M.
AU - Blundell, M.
AU - Gyftakis, K. N.
PY - 2018/2/5
Y1 - 2018/2/5
N2 - The maximum power and torque of a Permanent Magnet (PM) machine may be limited by its magnets’ temperature. An operational temperature above the magnets’ threshold may cause demagnetization, particularly under abnormal conditions. For Axial Flux Permanent Magnet (AFPM) machines, the PMs are mounted on its rotor, therefore, one way to regulate the PM temperature is via an appropriate rotor cooling method. Selective designs of air inlet and outlet arrangement have been studied by the Computational Fluid Dynamics (CFD) analysis to assess and compare their flow and cooling capabilities. The new cooling designs were then implemented on a Yokeless and Segmented Armature (YASA) machine for flow experimental validation. Additionally, the cooling performance after the design implementation is analysed via CFD. This paper's proposed cooling method is expected to lead to lower magnet temperatures, thus increased reliability, output power and efficiency.
AB - The maximum power and torque of a Permanent Magnet (PM) machine may be limited by its magnets’ temperature. An operational temperature above the magnets’ threshold may cause demagnetization, particularly under abnormal conditions. For Axial Flux Permanent Magnet (AFPM) machines, the PMs are mounted on its rotor, therefore, one way to regulate the PM temperature is via an appropriate rotor cooling method. Selective designs of air inlet and outlet arrangement have been studied by the Computational Fluid Dynamics (CFD) analysis to assess and compare their flow and cooling capabilities. The new cooling designs were then implemented on a Yokeless and Segmented Armature (YASA) machine for flow experimental validation. Additionally, the cooling performance after the design implementation is analysed via CFD. This paper's proposed cooling method is expected to lead to lower magnet temperatures, thus increased reliability, output power and efficiency.
KW - Axial flux machine
KW - CFD
KW - Heat transfer
KW - Permanent magnet machines
KW - Rotor cooling
UR - http://www.scopus.com/inward/record.url?scp=85037665102&partnerID=8YFLogxK
UR - https://pureportal.coventry.ac.uk/en/publications/air-inletoutlet-arrangement-for-rotor-cooling-application-of-axia
U2 - 10.1016/j.applthermaleng.2017.11.121
DO - 10.1016/j.applthermaleng.2017.11.121
M3 - Article
AN - SCOPUS:85037665102
SN - 1359-4311
VL - 130
SP - 1520
EP - 1529
JO - Applied Thermal Engineering
JF - Applied Thermal Engineering
ER -