Detailed study of the magnetic circuit in a longitudinal flux permanent-magnet synchronous linear generator

We present the results of a theoretical study of the magnetic circuit of a longitudinal flux permanent-magnet synchronous linear generator. In our study, we used a coupled field and circuit model solved by a time-stepping finite-element technique to analyze the machine. We investigated the effects o...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2005-09, Vol.41 (9), p.2490-2495
Main Authors: Danielsson, O., Leijon, M., Sjostedt, E.
Format: Article
Language:English
Subjects:
Circuits
Coupled mode analysis
Coupling circuits
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Finite element
Finite element methods
Flux
Generators
Geometry
linear synchronous
Magnetic analysis
magnetic circuit
Magnetic circuits
Magnetism
Materials science
Mathematical analysis
Other topics in materials science
permanent-magnet generators
Physics
Shape
Stators
Steel
Steels
Synchronous
Synchronous generators
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Summary:We present the results of a theoretical study of the magnetic circuit of a longitudinal flux permanent-magnet synchronous linear generator. In our study, we used a coupled field and circuit model solved by a time-stepping finite-element technique to analyze the machine. We investigated the effects of different permanent-magnet shapes and sizes, as well as different stator steel geometries. We noted a significant difference in performance for different magnet shapes. Our results also illustrate how small changes, on a millimeter scale, will affect the flux path, and thereby the overall performance of the machine, highlighting the importance of stator steel geometry.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2005.855449