Iron Loss Reduction in an Interior PM Automotive Alternator

This paper examines the iron loss characteristics of a high-flux interior permanent-magnet machine. The machine was designed as a concept demonstrator for a 6-kW automotive alternator and has a wide field-weakening range. Initial experimental results revealed a high iron loss during field-weakening...

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Bibliographic Details
Published in:IEEE transactions on industry applications 2006-11, Vol.42 (6), p.1478-1486
Main Authors: Zivotic-Kukolj, V., Soong, W.L., Ertugrul, N.
Format: Article
Language:English
Subjects:
Alternator
Alternators
Automotive engineering
field weakening
finite-element analysis (FEA)
interior permanent-magnet (PM) machines
Iron
iron loss
Loss measurement
Magnets
Power generation
Power measurement
Rotors
Stators
Velocity measurement
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Summary:This paper examines the iron loss characteristics of a high-flux interior permanent-magnet machine. The machine was designed as a concept demonstrator for a 6-kW automotive alternator and has a wide field-weakening range. Initial experimental results revealed a high iron loss during field-weakening operation. Finite-element analysis was used to investigate the cause of the high iron losses and to predict their magnitude as a function of speed. The effects of changes in the machine design were examined in order to reduce iron losses and hence improve the machine performance
ISSN:0093-9994
1939-9367
DOI:10.1109/TIA.2006.882660