Mechanical design considerations of a double stage axial-flux PM machine

Author

Mbidi, D.N. ; Van der Westhuizen, K. ; Wang, R. ; Kamper, M.J. ; Blom, J.

Author_Institution

Dept. of Electr. Eng., Stellenbosch Univ., South Africa

Volume

1

fYear

2000

fDate

2000

Firstpage

198

Abstract

This paper evaluates the mechanical design and construction of a 300 kW, double-stage, axial-flux permanent magnet (AFPM) machine. Finite element simulations were used to determine the severity of the attraction force between the rotor discs. The huge attraction force also caused problems during machine assembly, because the closer the discs are brought in, the larger the force. The results obtained from the simulations suggested an increase in yoke thickness in order to withstand the attraction force on it. The simple lumped parameter thermal model was established to evaluate the effectiveness of the air-cooling, which is compared with measurements taken on a prototype AFPM machine

Keywords

cooling; finite element analysis; machine theory; permanent magnet machines; rotors; thermal analysis; 300 kW; air-cooling effectiveness; double stage axial-flux PM machine; finite element simulations; lumped parameter thermal model; machine assembly; mechanical design considerations; rotor discs; yoke thickness; Air gaps; Assembly; Iron; Magnetic cores; Magnetic materials; Permanent magnets; Prototypes; Stator cores; Stator windings; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2000. Conference Record of the 2000 IEEE

Conference_Location

Rome

ISSN

0197-2618

Print_ISBN

0-7803-6401-5

Type

conf

DOI

10.1109/IAS.2000.881075

Filename

881075