The effects of curvature on axial flux machine cores

Hewitt, Andrew (2005) The effects of curvature on axial flux machine cores. [Thesis (PhD/Research)]

Text (Introductory Pages)

Download (106Kb)
Text (Whole Thesis)

Download (2234Kb)


This work is an investigation into the curvature related potential for flux to flow in the radial direction in the back-iron of laminated axial flux machine cores. Analytical and numerical models are presented. Analysis based on these models has shown that, in practical axial flux machines, the radial component of the flux density can be neglected with respect to the flux density distribution in the core back-iron. It has also been found that if the core permeability, core conductivity and number of poles are sufficiently high then power loss due to curvature related cross-lamination flux is negligible compared to normal eddy current losses. A closed form expression to predict losses due to curvature related radial flux is also presented. This expression allows axial flux machine designers to make quick assessment of the need to consider these losses when designing axial flux machines.

Statistics for USQ ePrint 1437
Statistics for this ePrint Item
Item Type: Thesis (PhD/Research)
Item Status: Live Archive
Additional Information: Doctor of Philosophy (PhD) thesis. Transferred from ADT 28/11/2006.
Faculty / Department / School: Historic - Faculty of Engineering and Surveying - No Department
Supervisors: Ahfock, Tony
Date Deposited: 11 Oct 2007 00:43
Last Modified: 01 Aug 2016 02:28
Uncontrolled Keywords: axial flux machine cores, curvature, laminated, magnetic flux, permeance matrix
Fields of Research : 09 Engineering > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified

Actions (login required)

View Item Archive Repository Staff Only