DocumentCode :
2382443
Title :
Experimental study on reducing cogging torque and core power loss in axial-flux permanent-magnet machines with slotted winding
Author :
Caricchi, F. ; Capponi, F. Giulii ; Crescimbini, F. ; Solero, L.
Author_Institution :
Dept. of Electr. Eng., Rome Univ., Italy
Volume :
2
fYear :
2002
fDate :
13-18 Oct. 2002
Firstpage :
1295
Abstract :
The axial flux permanent magnet machine (AFPM) topology is suited for direct-drive applications, and due to their enhanced flux weakening capability AFPMs having slotted winding are the most promising candidate for use in wheel-motor drives. In consideration of that, this paper deals with an experimental study devoted to investigate a number of technical solutions to be used in AFPMs having a slotted winding in order to achieve substantial reduction of cogging torque and power loss in the stator core. To conduct such an experimental study, a laboratory machine was purposely built incorporating facilities that allow easy-to-achieve off-line modifications of the overall magnetic arrangement at the machine air gaps, such as magnet skewing, angular shifting between rotor discs and accommodation of either PVC or Somaloy wedges for closing the slot openings. The paper discusses experimental results and gives guidelines for the design of AFPMs with improved performance.
Keywords :
air gaps; losses; magnetic cores; magnetic flux; motor drives; permanent magnet motors; rotors; stators; torque; PVC; Somaloy wedges; angular shifting; axial-flux permanent-magnet machines; cogging torque reduction; core power loss reduction; direct-drive applications; enhanced flux weakening capability; machine air gaps; magnet skewing; magnetic arrangement; rotor discs; slot openings closing; slotted winding; stator core; technical solutions; wheel-motor drives; Forging; Laboratories; Machine windings; Magnetic cores; Magnetic flux; Permanent magnet machines; Stator cores; Stator windings; Topology; Torque;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
ISSN :
0197-2618
Print_ISBN :
0-7803-7420-7
Type :
conf
DOI :
10.1109/IAS.2002.1042725
Filename :
1042725
Link To Document :
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