Molas NL - Nacelle Wind LiDAR
- 2,000 units have been deployed on wind turbines
- Cost Effective - Under massive production
- Robust Design - more than 5 years lifetime
- Increase the performance of wind turbines - AEP increase, load reduced, and turbine lifetime increased
Molas NL is a nacelle wind lidar which is independently developed by Nanjing Movelaser for wind power customers’ intelligent application solutions. It is a remote sensing laser device which can be installed above the wind turbine nacelle. It uses a coherent detection system based on the principle of laser Doppler frequency shift to achieve an accurate measurement of the wind vector field from the top of the nacelle to the front tens of to several hundred meters ahead of turbine rotor.
Molas NL measures and records wind data information of 400 m in front of wind turbines. After it’s connected to the main control system of the wind turbine, it can realize the functions in a variety of automated operating scenarios such as yaw control, load optimization, power curve test and so on.
Measurement Parameters
Measuring distance | 50-400m |
Measure the number of Ranges | 10 |
Sampling frequency | 4Hz |
Wind speed measurement accuracy | 0.1m/s |
Wind direction measurement accuracy | 0.5° |
Wind speed measurement range | 0~50m/s |
Wind direction measurement range | -90°~90° |
General Parameters
Power Supply | 240V |
Weight | <35kg(Optical head) <25kg(Digital storage unit) |
Range of working temperature | -40℃ ~ 60℃ |
Survival temperature range | -40℃ ~ 65℃(Power off) -45℃ ~ 65℃(Power on) |
Working humidity range | 0% to 100% |
Protection level | IP65(In-flight equipment) IP66(Off-board equipment) |
Anti-corrosion grade | ISO C5 |
Eye safety | IEC / EN 60825-1 ANIS Z136-1 |
Communication method | customizable |
Download the Full specification of Molas NL.
Certification and Calibration Reports of Molas NL Nacelle Wind LiDAR
DNV-GL Load Reduction Certificate
Molas NL working together with EFARM algorithm has been certified by DNV-GL that the loads on tower, blades were significantly reduced comparing to the baseline.
Windguard AEP Increase Certificate
Molas NL nacelle wind lidar working together with EFARM algorithm has been certified by Windguard that the AEP improvement of wind turbine
Molas NL Nacelle Wind LiDAR Project Example
Project Information:
- Project Name: National Radio Qinghai Gonghe Wind Farm
- Project capacity: 450,000 kilowatts
- Project model: GW121/2000
- Number of EFarm configurations: 225
AEP Increas of the wind turbine - Power Curve Comparison
Power generation increased by more than 3%
Load Reduction - Rotor Speed Deviation Comparison of EFarm on and off
The standard deviation of the speed has dropped significantly, which indicates expected control and load reduction effect has been achieved.