IP65 Certified Nacelle Mounted Lidar Providing 70m to 750m Range NL750 and Optical Head Weight Limited to 17.5 Kilograms

Product Description:

The Molas NL series represents an advanced nacelle wind lidar system, independently developed by our company and specifically engineered for intelligent wind power applications. Utilizing laser technology for remote sensing, this device is installed on top of the wind turbine nacelle. It employs a coherent detection mechanism based on the laser Doppler frequency shift principle. By emitting laser pulses and interpreting the backscattered signals from atmospheric aerosols, the lidar provides highly accurate vector wind field measurements at distances varying according to model: from 50 m to 200 m for the NL200, 400 m for the NL400, 500 m for the NL500, and from 70 m up to 750 m for the NL750, all positioned ahead of the rotor plane.

Supporting up to ten concurrent measurement layers with a data refresh rate of 4 Hz, the Molas NL series achieves outstanding precision, boasting a wind speed accuracy of 0.1 m/s and a wind direction accuracy within ±0.5°. This enables the system to effectively capture rapid and dynamic changes in wind conditions. The solution offers four distinct beam configurations: all models maintain a horizontal angle of 30°, while the vertical angle differs—25° or 10° for the NL200, and 10° for the NL400, NL500, and NL750 models—thereby optimizing spatial coverage to suit a variety of turbine designs and site requirements.

Integration with the main turbine control system is streamlined through multiple industrial communication protocols, such as Profibus DP, Modbus TCP, Modbus RTU, and CANOPEN. This ensures seamless connectivity and enables sophisticated feed-forward control strategies. By supplying real-time wind preview data, the Molas NL lidar empowers turbines to proactively adjust pitch and yaw before the wind reaches the rotor blades. As a result, significant reductions in both extreme and fatigue loading are achieved, alongside improvements in annual energy production (AEP). Beyond feed-forward control, the system also serves critical roles in yaw misalignment correction, power curve verification as a replacement for traditional met masts, wake detection and analysis, and the intelligent cooperative control of wind turbine fleets.

Designed to perform reliably in harsh environments, the Molas NL series features an IP67-rated optical head and an IP65-rated data processing unit. Its corrosion protection corresponds to ISO C5 standards, making it well-suited for offshore, onshore, and high humidity or salt-spray conditions. The operational temperature range extends from -40 °C to +60 °C, with survival capabilities of -40 °C to +65 °C during power outages and -45 °C to +65 °C while powered. The system withstands survival wind speeds up to 75 m/s and can operate at altitudes as high as 3,500 meters. Lightweight design enhances installation ease: the optical head weighs no more than 17.5 kg, and the data processing unit weighs up to 3.6 kg, which helps reduce crane requirements and costs.

With its durable construction, exceptional accuracy, and flexible connectivity options, the Molas NL series transcends traditional wind measurement tools. It stands as a foundational element for smart wind farm management, enabling operators to achieve superior efficiency, lower maintenance expenses, and gain a sustainable competitive advantage within the renewable energy sector.

Features:

Our system features true front wind measurement, ensuring precise and accurate wind data collection directly from the source. It supports real-time data transmission as well as local storage, allowing seamless access and backup of critical information.

The device offers exceptional accuracy, with measurements precise up to 0.1 meters per second and 0.5 degrees. Coupled with a high sampling rate, it ensures that even rapid changes in wind conditions are captured effectively.

Designed to monitor multiple distance layers, the system covers a large range, providing comprehensive environmental insights over varying altitudes. This multi-layer capability enhances the depth and reliability of the data gathered.

Utilizing a four-beam three-dimensional measurement approach, the equipment delivers thorough and multidimensional wind analysis. Its intelligent configuration allows for optimized performance tailored to specific operational needs.

Additionally, the system is easy to maintain, minimizing downtime and ensuring continued operation with minimal effort. It boasts high applicability across different scenarios and industries, along with strong compatibility to integrate smoothly with existing setups.

Technical Parameters:

Applications:

Blade Load Analysis involves evaluating the forces and stresses experienced by the turbine blades during operation. This process is crucial to ensure the structural integrity and longevity of the blades under various wind conditions.

The Power Curve Test is conducted to determine the relationship between wind speed and the electrical power output of a turbine. This test helps in assessing the turbine's performance and efficiency in converting wind energy into usable power.

Wake Analysis focuses on studying the airflow patterns behind a wind turbine. Understanding wake effects is important for optimizing turbine placement and minimizing performance losses in wind farms.

Yaw Correction refers to the adjustment of the turbine's orientation relative to the wind direction. Proper yaw control maximizes energy capture and reduces mechanical stress on turbine components.

Intelligent Farm Group Control involves coordinated management of multiple turbines in a wind farm. Through advanced algorithms and real-time data, the system optimizes overall farm output and operational efficiency.