Design, Prototyping, and Analysis of a Low Cost Axial-Flux Coreless Permanent-Magnet Generator

This paper presents the design, prototyping, and analysis of a relatively small and cheap axial-flux three-phase coreless permanent-magnet generator. The excitation of the machine is done by rectangular flat shaped neodymium-iron-boron magnets. A two-dimensional model of the machine is analyzed with finite-element software to obtain the machine parameters. One special feature of the constructed generator is in the design and prototyping of nonferromagnetic holders to counteract centrifugal forces acting on magnets, especially at high speeds. By implementing the nonferromagnetic holders, one can expect to construct high-speed axial-flux permanent-magnet generators at low cost.

[1]  M.J. Kamper,et al.  Optimal design of a coreless stator axial flux permanent-magnet generator , 2005, IEEE Transactions on Magnetics.

[2]  F. Crescimbini,et al.  PERFORMANCE OF CORELESS-WINDING AXIAL-FLUX PERMANENT-MAGNET GENERATOR WITH POWER OUTPUT AT 400 Hz - 3000 rev/min , 1997 .

[3]  Maarten J. Kamper,et al.  Two-dimensional Cartesian air-gap element (CAGE) for dynamic finite-element modeling of electrical machines with a flat air gap , 2002 .

[4]  Antero Arkkio,et al.  Losses in high-speed asynchronous motors , 1994 .

[5]  Rong-Jie Wang.  Design aspects and optimisation of an axial field permanent magnet machine with an ironless stator , 2003 .

[6]  M.J. Kamper,et al.  Calculation of eddy current loss in axial field permanent-magnet machine with coreless stator , 2004, IEEE Transactions on Energy Conversion.

[7]  T. Lipo,et al.  AXIAL FLUX PERMANENT MAGNET DISC MACHINES: A REVIEW , 2004 .

[8]  F. Crescimbini,et al.  Performance of coreless-winding axial-flux permanent-magnet generator with power output at 400 Hz-3000 rev/min , 1997, IAS '97. Conference Record of the 1997 IEEE Industry Applications Conference Thirty-Second IAS Annual Meeting.

[9]  S. E. Abdollahi,et al.  Analytical Modeling of Axial Air Gap Solid Rotor Induction Machines Using a Quasi-Three-Dimensional Method , 2007, IEEE Transactions on Magnetics.

[10]  Jacek F. Gieras,et al.  Axial Flux Permanent Magnet Brushless Machines , 2005 .

[11]  Jacek F. Gieras,et al.  Permanent magnet motor technology : design and applications , 1996 .