Proximity Loss Study In High Speed Flux-Switching Permanent Magnet Machine

High speed flux-switching permanent magnet (FSPM) machines have been identified as key technologies for aerospace and hybrid electric vehicle applications. The open slot geometry, high stator flux densities and high operating frequencies result in high variable cross slot leakage and proximity losse...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2009-10, Vol.45 (10), p.4748-4751
Main Authors: Thomas, A.S., Zhu, Z.Q., Jewell, G.W.
Format: Article
Language:English
Subjects:
Analytical models
Brushless machine
Coils
Conductors
Estimates
Finite element method
Finite element methods
flux-switching
Frequency
Geometry
High speed
Hybrid vehicles
Magnetic analysis
Magnetism
Mathematical analysis
permanent magnet
Permanent magnet machines
Permanent magnets
Proximity
proximity loss
Stators
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Summary:High speed flux-switching permanent magnet (FSPM) machines have been identified as key technologies for aerospace and hybrid electric vehicle applications. The open slot geometry, high stator flux densities and high operating frequencies result in high variable cross slot leakage and proximity losses within the armature windings. The aim of this study is to reduce AC losses in the armature of a high speed FSPM machine by stranding the conductors. The influence of rotor movement across the slot opening is investigated using 2-D finite element analysis. A simple 1-D analytical model is developed and validated by the finite element analysis to accurately estimate the level of proximity losses and then used to determine the optimal number and diameter of conductors.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2009.2021666