Renewable NRG Systems has supplied a Wind Iris nacelle-mounted Lidar system to Northern Power Systems Corp. (NPS) for the purpose of performing power curve testing and validation of the NPS 100 wind turbine platform.
The Wind Iris will be used to measure the free stream wind speed ahead of the turbine, where the blocking effect is minimal. 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 the company to accurately characterise how the turbine anemometer and vane measurements are influenced by the rotation of the blades and the structure, known as the nacelle transfer function (NTF). NPS has deployed the Wind Iris on the Point Lookout project in Hempstead, NY 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.
