DocumentCode
1433855
Title
Direct control of air-gap flux in permanent-magnet machines
Author
Hsu, John S.
Author_Institution
Oak Ridge Nat. Lab., TN, USA
Volume
15
Issue
4
fYear
2000
fDate
12/1/2000 12:00:00 AM
Firstpage
361
Lastpage
365
Abstract
A new field weakening and adjustment technology for PM machines by direct control of air-gap fluxes is introduced. This new technology requires no current decomposition by the inverter eliminating the need for a position sensor. Demagnetization, which normally occurs during field weakening, does not occur with this new method. The field-weakening ratio can reach 10:1 or higher. This technology is robust and particularly useful for, but not limited to, electric vehicle drives and PM generators
Keywords
air gaps; demagnetisation; machine control; magnetic flux; magnetic variables control; motor drives; permanent magnet generators; permanent magnet motors; PM generators; air-gap flux; demagnetization; direct control; electric vehicle drives; field weakening; field-weakening ratio; permanent-magnet machines; position sensor; Air gaps; DC motors; Demagnetization; Electric vehicles; Government; Magnetic flux; Pulse width modulation; Robustness; Torque control; Voltage control;
fLanguage
English
Journal_Title
Energy Conversion, IEEE Transactions on
Publisher
ieee
ISSN
0885-8969
Type
jour
DOI
10.1109/60.900493
Filename
900493
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