DocumentCode
1515365
Title
Structural Flexibility: A Solution for Weight Reduction of Large Direct-Drive Wind-Turbine Generators
Author
Shrestha, Ghanshyam ; Polinder, Henk ; Bang, Deok-je ; Ferreira, Jan Abraham
Author_Institution
Delft Univ. of Technol., Delft, Netherlands
Volume
25
Issue
3
fYear
2010
Firstpage
732
Lastpage
740
Abstract
This paper looks into a new concept for reducing the structural weight of large direct-drive generators used in wind turbines. The concept uses magnetic bearings to position the rotor of the generator. The use of magnetic bearings allows structural flexibility in the generator. The weight of the rotor using the new concept is compared to the weight of a rotor designed with conventional methods. For a 5-MW generator, the result is that the structural weight of the rotor reduces by 45%.
Keywords
electric drives; magnetic bearings; turbogenerators; wind turbines; large direct-drive wind-turbine generators; magnetic bearings; power 5 MW; rotor position; structural flexibility; weight reduction solution; Composite materials; Costs; Design methodology; Magnetic levitation; Magnetic materials; Rails; Rotors; Stators; Wheels; Wind turbines; Direct drive; flexibility; generator; magnetic bearing; permanent magnet; structural design; wind turbine;
fLanguage
English
Journal_Title
Energy Conversion, IEEE Transactions on
Publisher
ieee
ISSN
0885-8969
Type
jour
DOI
10.1109/TEC.2010.2048713
Filename
5484469
Link To Document