Title :
A new modular flux-switching permanent magnet drive for large wind turbines
Author :
Ditmanson, Chester ; Hein, Peter ; Kolb, Stefan ; Molck, Joaquin ; Bernet, Steffen
Author_Institution :
Lehrstuhl Leistungselektron., Elektrotech. Inst., Tech. Univ. Dresden, Dresden, Germany
Abstract :
A new modular drivetrain for large wind turbines currently under development is presented. The electromechanical drivetrain has a direct-drive configuration with a modular flux-switching permanent magnet generator. The full-power converter consists of 12 parallel back-to-back 2L-VSC converter modules. A novel method of modulation is used to improve harmonic quality while maintaining a low switching frequency. Benefits of the new design include simplified manufacturing and transport, increased system availability due to fault-tolerance and redundance, and avoidance of an LCL filter. Measurements results are shown from a 500kW test rig.
Keywords :
electric drives; fault diagnosis; permanent magnet generators; power supply quality; power transmission (mechanical); wind turbines; back-to-back 2L-VSC converter modules; direct-drive configuration; electromechanical drivetrain; fault redundance; fault tolerance; full-power converter; harmonic quality; modular drivetrain; modular flux-switching permanent magnet drive; modular flux-switching permanent magnet generator; power 500 kW; switching frequency; system availability; wind turbines; Control systems; Generators; Rotors; Stator windings; Wind turbines; Windings;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2013 IEEE
Conference_Location :
Denver, CO
DOI :
10.1109/ECCE.2013.6646798
