Affiliations: [a] Jiangsu Engineering Research Center on Meteorological Energy Using and Control, Nanjing University of Information Science {&} Technology, Nanjing, Jiangsu, China | [b] Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Nanjing University of Information Science {&} Technology, Nanjing, Jiangsu, China | [c] Faculty of Automation, Huaiyin Institute of Technology, Huai'an, Jiangsu, China
Correspondence:
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Corresponding author: Yongjuan Cao, Nanjing University of Information Science {&} Technology, Nanjing 210044, Jiangsu, China. Tel.: +86 18952067352; E-mail:[email protected]
Abstract: This paper presents an analytical solution of the
magnetic field in a coreless stator axial-flux permanent magnet (AFPM)
machine, including axial, radial and circumferential components of the
air-gap flux density. Based on the three-dimensional (3-D) analytical field
solution, the paper also presents the analytical analysis of axial
electromagnetic force of the rotor discs using Maxwell stress tensor method.
The effect of some sizes on the axial electromagnetic force is analyzed. For
the verification, 3-D finite element method (FEM) is accomplished to analyze
the magnetic field and electromagnetic force. The solution and calculation
are useful in design and optimization of coreless stator AFPM machines.
Keywords: Coreless stator axial-flux permanent-magnet (AFPM), electromagnetic force, magnetic field analytical solution, Maxwell stress tensor
