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LM Glasfiber in research project on wind turbine blade laser sensory system

LM Glasfiber, the independent manufacturer of wind turbine blades, is entering into a three-year research project supported by the Danish National Advanced Technology Foundation to develop laser-based wind sensory systems as an integrated part of future wind turbine blades.

The project, which is a joint venture with Risø DTU and NKT Photonics, aims to improve the load control of the wind turbine in operation thus enhancing the efficiency of the turbine and improving its overall reliability.

LM Glasfiber is working on several projects to improve the efficiency of the blades and consequently the overall energy production from the wind turbine. An important part of this is developing ‘intelligent’ blades that measure the wind and either adapt to the current wind conditions or supply data to the wind turbine control system,” says Lars Fuglsang, LM Glasfiber Research Director.

Integrating so called LIDARs (Light Detection And Ranging) into the blade will be an extension of LM Glasfiber’s previous wind turbine blade monitoring technology and the potential for improved yield is impressive, LM Glasfiber says. It is expected that the energy production may be increased by up to 5% over the wind turbine’s 20-year life time.

“Whereas current blade monitoring technologies measure the loads on the blades, integrating LIDARs into the blade enables us to measure the exact wind conditions to which the blades are exposed. So basically, this means that instead of looking in the rear-view mirror and realising what the blade has been exposed to, we will be able to measure the wind real-time and either have the blade or the wind turbine react on this right away.”

It is expected that a prototype of the new application of the LIDAR technology in wind turbines will be available in 2012. LM Glasfiber says it expects to be able to supply its customers with LIDAR-enabled intelligent wind turbine blades by 2014.

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