DocumentCode
2973350
Title
A new concept for weight reduction of large direct drive machines
Author
Shrestha, G. ; Polinder, H. ; Bang, D.J. ; Ferreira, J.A. ; McDonal, A.S.
Author_Institution
Electr. Power Process./ DUWIND, Delft Univ. of Technol., Delft
fYear
2008
fDate
6-9 Sept. 2008
Firstpage
1
Lastpage
6
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 machine. The weight of the rotor using the new concept is compared to a rotor designed with conventional methods. The comparison of a 5 MW generator rotor structural material shows about 45% reduction of weight of the rotor.
Keywords
finite element analysis; machine bearings; magnetic bearings; permanent magnet generators; rotors; turbogenerators; wind turbines; direct drive generators; large direct drive machines; magnetic bearings; permanent magnet radial flux machine; power 5 MW; rotor weight; weight reduction; wind turbine generator; wind turbines; Magnetic levitation; Permanent magnets; Rails; Rotors; Stators; Thermal force; Thermal stresses; Torque; Wheels; Wind turbines;
fLanguage
English
Publisher
ieee
Conference_Titel
Electrical Machines, 2008. ICEM 2008. 18th International Conference on
Conference_Location
Vilamoura
Print_ISBN
978-1-4244-1735-3
Electronic_ISBN
978-1-4244-1736-0
Type
conf
DOI
10.1109/ICELMACH.2008.4800206
Filename
4800206
Link To Document