US 6,921,985 B2
Low voltage ride through for wind turbine generatorsGeneral
US 6,921,985 B2
Low voltage ride through for wind turbine generators
Tech Center:
2800 Semiconductors/Memory, Circuits/Measuring and Testing, Optics/Photocopying, Printing/Measuring and Testing
Examiner:
Darren Schuberg
Art Unit:
2834 Electrical Circuits and Systems
Inventors:
Wilhelm Janssen; Henning Luetze; Andreas Buecker; Till Hoffmann; Ralf Hagedorn
Assignee:
Priority:
01/24/03
Filed:
01/24/03
Granted:
07/26/05
Expiration:
05/06/23
Abstract
A wind turbine. The wind turbine includes a blade pitch control system to vary a pitch of one or more blades and a turbine controller coupled with the blade pitch control system. A first power source is coupled with the turbine controller and with the blade pitch control system to provide power during a first mode of operation. Uninterruptible power supplies coupled to the turbine controller and with the blade pitch control system to provide power during a second mode of operation. The turbine controller detects a transition from the first mode of operation to the second mode of operation and causes the blade pitch control system to vary the pitch of the one or more blades in response to the transition.
Cooperative Patent Classification (CPC)
H02H02J2300/28H02P2101/15H02JF03D7/0284F03DY02E10/76Y02EF05B2270/10711F05B