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Alternatives for leakage reduction in a novel claw-pole electrically magnetized synchronous machine

Martinez-Munoz, D and Alaküla, Mats LU (2004) Second International Conference on Power Electronics, Machines and Drives, PEMD 2004 In IEE Conference Publication 1. p.386-391
Abstract
The leakage characteristics of a novel claw-pole electrically magnetized synchronous machine are discussed in this paper. The novelty of the machine is that the magnetizing coils are placed in magnetically conducting end-plates, thus eliminating the need of slip-rings in the rotor. A previous study comparing this machine with a permanent magnet alternative showed a 20% higher leakage in the electrically magnetized machine, and 15% lower torque. Using 3D finite element simulations, an in-depth study of the leakage paths in this machine has been carried out, together with an assessment of the solutions that contribute to reduce the leakage. It is shown that the output torque can be improved by up to 113% by combining different types of... (More)
The leakage characteristics of a novel claw-pole electrically magnetized synchronous machine are discussed in this paper. The novelty of the machine is that the magnetizing coils are placed in magnetically conducting end-plates, thus eliminating the need of slip-rings in the rotor. A previous study comparing this machine with a permanent magnet alternative showed a 20% higher leakage in the electrically magnetized machine, and 15% lower torque. Using 3D finite element simulations, an in-depth study of the leakage paths in this machine has been carried out, together with an assessment of the solutions that contribute to reduce the leakage. It is shown that the output torque can be improved by up to 113% by combining different types of permanent magnets around the claw-poles. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Torque response, Permanent magnet machines, Leakage, Claw-poles
in
IEE Conference Publication
volume
1
pages
386 - 391
publisher
Institution of Electrical Engineers
conference name
Second International Conference on Power Electronics, Machines and Drives, PEMD 2004
external identifiers
  • scopus:17044373919
ISSN
0537-9989
ISBN
0-86341-383-8
language
English
LU publication?
yes
id
a1756220-6c77-4a94-bf80-0677e1e8adad (old id 613983)
alternative location
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1348950
date added to LUP
2007-11-29 13:36:15
date last changed
2017-01-01 07:00:47
@inproceedings{a1756220-6c77-4a94-bf80-0677e1e8adad,
  abstract     = {The leakage characteristics of a novel claw-pole electrically magnetized synchronous machine are discussed in this paper. The novelty of the machine is that the magnetizing coils are placed in magnetically conducting end-plates, thus eliminating the need of slip-rings in the rotor. A previous study comparing this machine with a permanent magnet alternative showed a 20% higher leakage in the electrically magnetized machine, and 15% lower torque. Using 3D finite element simulations, an in-depth study of the leakage paths in this machine has been carried out, together with an assessment of the solutions that contribute to reduce the leakage. It is shown that the output torque can be improved by up to 113% by combining different types of permanent magnets around the claw-poles.},
  author       = {Martinez-Munoz, D and Alaküla, Mats},
  booktitle    = {IEE Conference Publication},
  isbn         = {0-86341-383-8},
  issn         = {0537-9989},
  keyword      = {Torque response,Permanent magnet machines,Leakage,Claw-poles},
  language     = {eng},
  pages        = {386--391},
  publisher    = {Institution of Electrical Engineers},
  title        = {Alternatives for leakage reduction in a novel claw-pole electrically magnetized synchronous machine},
  volume       = {1},
  year         = {2004},
}