Power and load optimization with spinner wind measurement
The project investigated the possibility of a 1-5% improvement in wind turbine operating economy through wind measurement in front of the rotor using a spinner anemometer rather than conventional wind measurements behind the rotor.
The project objectives are to improve wind turbine efficiency by 1-5% by the use of an innovative spinner anemometer. The project will assess, optimize and quantify the advantages by having wind measurements in front of the rotor compared to existing technology, where wind speed and wind direction are measured behind the rotor on the nacelle. It is expected that a significant improvement of yaw control and an increased power output can be attained, and that the loads can be decreased. On large wind turbines the spinner can be used as an integrated part of the wind measurement. The aerodynamics on the spinner surface is used for an accurate integrated measurement of wind direction, flow inclination angle and wind speed. The method can be used to optimize yaw control and improve conditions for power performance verification, and thus reduce economic risks
A spinner anemometer with specially designed 1D sensors was tested in a large-scale wind tunnel and subsequently mounted on a 3.6 MW wind turbine. The project did not succeed in performing all planned measurements, but subsequently an enhanced prototype was developed with an algorithm installed in the actual instrument to be commercially tested in wind turbines of different makes.
Key figures
Category
Participants
| Partner | Subsidy | Auto financing |
|---|---|---|
| Siemens A/S |
Contact
P.O. Box 49
DK-4000 Roskilde, Denmark
www.risoe.dtu.dk
Friis Pedersen, Troels , 46774677, trpe@risoe.dtu.dk
Øvr. Partnere: Siemens
