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Renewable NRG Systems has supplied a Wind Iris nacelle-mounted LIDAR system to turbine maker Northern Power Systems Corp. (NPS) for the purpose of performing power curve testing and validation of the NPS 100 wind turbine platform.

Wind Iris is manufactured by Avent Lidar Technology, a joint venture between U.S.-based Renewable NRG Systems and France-based Leosphere. The product uses pulsed LIDAR technology to measure horizontal wind speed and direction at distances of 40 to 400 meters upwind of the turbine.

According to Renewable NRG Systems, the data compiled by the Wind Iris will allow NPS to determine the impact of different upgrades on wind turbine power performance. Additionally, it will enable NPS to accurately characterize how the turbine anemometer and vane measurements are influenced by the rotation of the blades and the structure, known as the nacelle transfer function.

NPS has deployed the Wind Iris on the Point Lookout project in Hempstead, N.Y., where one of the NPS 100's is located. After testing is complete, NPS plans to redeploy the Wind Iris for product testing at additional sites, including Burke Mountain in East Burke, Vt., and Rock of Ages in Graniteville, Vt.



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