F - Mech Eng,Light,Heat,Weapons – 03 – D
Patent
F - Mech Eng,Light,Heat,Weapons
03
D
F03D 11/00 (2006.01) G01B 15/06 (2006.01)
Patent
CA 2725360
The invention relates to the detection of bending deflection of a wind turbine blade with the aim of providing early detection of the risk of the blade striking in particular the tower of the wind turbine. For this purpose an arrangement for the wind turbine is proposed which comprises a radio transmitter and a linear antenna array assigned to the radio transmitter. The radio transmitter is mounted on the blade tip and emits a signal S e.g. continuously. The antenna array is mounted on the rotor of the wind turbine in a co-rotating manner and receives the signal S. On the basis of the transit times of the signal from the rotor to the individual antennas of the array, the position of the radio transmitter relative to the array can be determined. In the event of blade deflection, e.g. if a high wind load is present, the relative position changes, which can be detected by means of the arrangement according to the invention.
Gierlich Roland
Huettner Joerg
Ziroff Andreas
Aktiengesellschaft Siemens
Smart & Biggar
LandOfFree
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