Windar Photonics Wind Sensor. Great at Control

Windar Photonics Wind Sensor

Version 1.0 2012 Contents Imagine Being Able to Predict the Wind 5-6 Wind Sensors in a New Light 7-8 You Harvest the Wind Better from the Top 9-10 Result of a Bright Idea 11-12 Windar Photonics, Wind Sensor

Result of A Bright Idea Imagine being able to predict the wind. With the Windar Photonics Wind Sensor you can.

Imagine Being Able 5-6 to Predict the Wind From the top of the nacelle, the precise wind direction and wind speed are measured 70 metres out in front of the blades. Researchers in the wind industry envision tomorrow s wind turbines as smart machines, capable of maximizing power production and minimizing dynamic load according to changes in the oncoming wind. This requires that each turbine is equipped with an instrument that can obtain accurate and timely knowledge of the wind inflow. Wind LIDARs, which use laser beams to remotely probe the flow of aerosols are the right sensor for this task. The successful introduction of wind LIDARs can be attributed to their ability to accurately measure wind speed and direction, remotely. Predicting the Wind From the top of the wind turbine, wind speed and direction are measured accurately while still a long way from the blades. The wind turbine then receives data about the wind that is coming its way, and can adapt in advance. This means that power production can be stepped up, and wear-and-tear on the wind turbine is reduced. Gain More Power You can expect a 3 to 5% increase in power and at least 10% less stress on the vital components of the wind turbine. Depending on the price of power, your investment in the wind sensor could pay for itself within 12 to 24 months. In subsequent years, you can reap the cash benefits of the additional power, decreased wear-and-tear and fewer stoppage days. Your Benefits of the Wind Sensor Our LIDAR wind sensor is an add-on to existing wind sensors and provides the basis for: The successful introduction of wind LIDARs can be attributed to their ability to accurately measure wind speed and direction, remotely. Reduce yaw misalignment Optimize pitch system Reduce loads Precise wind data in front of the turbine Increased lifetime, decreased downtime

Wind Sensors in 7-8 a New Light Our wind sensor measures the wind using laser light. The principle known as LIDAR was invented back in the 1970s. But we have finetuned the technology and replaced expensive light sources with a less expensive and much more affordable laser. We have filed a patent for the use of LIDAR. The result is a wind sensor unlike any other, which is well worth putting on all wind turbines. What is LIDAR? How light can measure the wind LIDAR stands for Light Detection And Ranging. The light emitted by the wind sensor is reflected by small particles in the air: pollen, dust and water droplets. By measuring how these windborne particles move, we are able to calculate how the wind is moving. That, in simple terms, is the principle behind LIDAR wind sensing. Power Versus Yaw The compact design of the box allows it to be placed right next to other wind sensors and is easily installed. Purely Optical, Nothing Mechanical Inside the compact design, there are no mechanical parts to wear out or break down. It is controlled entirely by electrical signals and can withstand extreme conditions at the top of a wind turbine. This means a minimum of maintenance. Our wind sensor is designed to operate maintenance-free for 18 months, and thus follows the servicing cycle of the wind turbine. Proof of Concept Back in 2010, the LIDAR system underwent a proof-of-concept verification test. This test was conducted at a distance of 80 metres, with the LIDAR system measuring towards the cup anemometer. It is a generally accepted fact that most wind turbines suffer from yaw misalignment to a greater or lesser extent. Various tests including the Risø test below have verified that there is a relatively large power reduction factor for each degree of yaw misalignment on a wind turbine. Facts About the Wind Sensor Compact and aerodynamic design No mechanical moving part Low maintenance Innovative and cost effective Monitored system with five control flags Add-on to existing wind sensors Brings wind data every second

You Harvest the Wind 9-10 Better from the Top Data Every Second The LIDAR wind sensor emits two laser beams horizontally and far out into the air in a radius of 60 degrees. The exact speed and direction of the wind are thus recorded for a large field in front of the blades. And every second, data about the wind is transmitted to the wind turbine to enable it to adjust and harvest the wind optimally. The preferred position is on the cooling tower or on the pedestal alongside the other wind sensors. But we are able to deliver the LIDAR system mounted on legs if there is no room on the cooling tower. Functional Specifications Laser Source CW - Continuosus Wave Laser Power Supply 24 VDC, 20 Amp Operating Wavelength, I 1550 nm (Eye Safety Class 1) Optical Head (mm) 300 x 200 x 150 [L x W x H] Wind Speed Range 2 < v 30 m/s Control Unit (mm) 300 x 300 x 120 [L x W x H] Wind Speed Resolution 0,2 m/s (Lidar Beam line-of-site) Optical Head Weight 8 kg Wind Direction Range - 30 < ФH < +30 Wind Direction Resolution Direction accuracy ~ 1 Control Unit Weight Cable Length 15 kg 10 metres Inside the compact design, there are no mechanical parts to wear out or break down. It is controlled entirely by electrical signals and can withstand extreme conditions at the top of a wind turbine Sensing Range, Z 0 Probed Length Data Output Rate Operating Temperature Interface 70 m (line-of-sight); 60 m (horizontally for = 30 ) 9,5 meters at line-of-sight 1 Hz -40 C to +55 C RS485 IP-Class IP65 Data Output: Wind speed each second [m/s] Relative wind direction each second [mdeg] Line-of-sight wind speed each second [m/s] Elevation and roll - optical head - each second [mdeg) Laser error

Result of a Bright 11-12 Idea A Bright Idea Windar Photonics A/S is a young, foreward-looking spin-off company from the Risø DTU research environment. In 2005, a research scientist had a bright idea for how to make wind sensing with LIDAR. Three years later, a breakthrough came for a new system of measuring the wind accurately over long distances. With a robust private equity behind it, Windar Photonics first saw the light of day in 2008. Since then, a team of innovative employees has joined the company, working to make wind turbines all over the world more effective. Windar Photonics aim to be the most preferred provider of cost efficient and reliable LIDAR systems for wind turbines. Windar Photonics are customer focused and are always visible, available and in direct dialogue with customers. With a robust private equity behind it, Windar Photonics first saw the light of day in 2008. Since then, a team of innovative employees has joined the company, working to make wind turbines all over the world more effective. Windar Photonics will keep introducing the latest LIDAR technology for the wind industry at a very competitive price.

Contact Mita-Teknik Denmark (HQ) Mita-Teknik Håndværkervej 1 DK-8840 Rødkærsbro Denmark Tel: +45 8665 8600 Fax: +45 8665 9290 mail@mita-teknik.com www.mita-teknik.com Contact Windar Photonics Denmark (HQ) Windar Photonics Helheshøj Allé 16-18 DK-2650 Taastrup Denmark Tel: +45 4676 7688 www.windarphotonics.com Windar Photonics, Wind Sensor