Title:
MONITORING DEVICE FOR PITCH SYSTEMS OF WIND ENERGY SYSTEMS
Document Type and Number:
WIPO Patent Application WO/2009/146848
Kind Code:
A3
Abstract:
The invention relates to a wind energy system having a rotor (12), a generator being driven by the same for generating electric energy, wherein the rotor has at least one blade (14) that can be adjusted by a pitch device (2), and wherein the pitch device (2) comprises an energy supply unit having a battery (21) and an actuator (3) and a controller (4). The invention provides a load module (5), which switches the actuator (3) between the operating mode and the testing mode, wherein the actuator (3) produces a predefined load for the battery (21) in the testing mode. In this manner a high and reproducible load, which is not dependent upon environmental conditions, may be applied without any additional effort with regard to hardware in order to be able to carry out a stress test of high informative value in a simple and quick manner, even during ongoing operation.
Inventors:
LETAS HEINZ-HERMANN (DE)
PETERS MATTHIAS (DE)
PETERS MATTHIAS (DE)
Application Number:
PCT/EP2009/003842
Publication Date:
October 21, 2010
Filing Date:
May 29, 2009
Export Citation:
Assignee:
REPOWER SYSTEMS AG (DE)
LETAS HEINZ-HERMANN (DE)
PETERS MATTHIAS (DE)
LETAS HEINZ-HERMANN (DE)
PETERS MATTHIAS (DE)
International Classes:
G01R31/36; H02J9/06
Foreign References:
| EP1739807A2 | 2007-01-03 | |||
| DE202006018866U1 | 2007-03-01 | |||
| DE2043660A1 | 1972-03-09 | |||
| DE10261491A1 | 2004-07-01 | |||
| GB1175119A | 1969-12-23 | |||
| US3529230A | 1970-09-15 | |||
| US20060273783A1 | 2006-12-07 |
Attorney, Agent or Firm:
GLAWE DELFS MOLL (Hamburg, DE)
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