Pitch Control Systems Designed to Maximize Availability and Performance
With thousands of pitch control systems in operation worldwide, Emerson offers a proven pitch control system that provides a high degree of availability and reliability for your wind turbines.
Emerson's pitch control system is a standard turnkey solution that fits any three-bladed wind turbine model up to 10 MW. For turbines up to 20 MW and for two-bladed turbines, our pitch control system is customized with load-sharing between more pitch servo motors and blade units for each individual blade.
Cost Competitive, Proven and Certified System Enables High Availability
- Proven platform with more than 3,000 pitch systems in operation
- Highly robust system with a 30-year design life
- Rugged and durable design for extreme climate variations and high altitude; includes IP65 units with seawater resistant housings
- Open system for development and integration of own software in the hub controller
- Open solution enables turnkey or kit-set solutions
- High availability and reliability, fast commissioning, self-test on-the-fly and simple maintenance procedures.
Proven Partner with Expert Support Services
- More than 60,000 wind turbine control systems in operation worldwide
- Includes pitch performance optimization services
- Five-year extended warranty starting from the day of commissioning
- Comprehensive remote and onsite support services
- Certifications for ISO 13849-1, IEC 61400-1, IEC 61400-3, IEC 61400-22, GL 2010, GL 2012 and DNVGL-SE-0441
- Compliant with GB/T 25386 and NB/T 31018
Frequently Asked Questions about Wind Turbine Pitch Control
Pitch control in a wind turbine refers to the system that adjusts the angle of the turbine blades relative to the wind. This adjustment seeks to optimize turbine performance and efficiency by controlling the rotational speed and aerodynamic lift generated by the blades.
Advanced pitch control systems are automated and continuously adjust the blade angles in response to changing wind conditions to optimize turbine performance, while also detecting pitch misalignment.
Wind turbines are typically equipped with either a hydraulic (EHC) pitch system or an electrical pitch system. The electrical pitch system offered by Emerson pitches the rotor blades collectively (CPC) or individually (IPC) to maintain pitch angle and optimum rotor speed. For maximum safety, blades are pitched to feathering position - automatically and autonomously in case of safety system activation.
Our electrical pitch system continuously monitors the communication from the wind turbine controller, and the health of all system components, including servo motor and energy storage, and it ensures the wind turbine is stopped in case the wind turbine control system should fail to keep the turbine operation within the design limits.
The best pitch for a wind turbine blade can vary depending on several factors, including wind speed, blade and turbine design, and specific operational goals. There isn't a one-size-fits-all answer, as the optimal blade pitch angle is dynamic and continuously adjusted based on real-time wind conditions.
Therefore, the best pitch for a wind turbine is not a fixed value but rather a dynamic parameter that is continuously optimized by the turbine's control system. This ensures that the wind turbine operates as efficiently, safely, and reliably as possible under varying wind conditions.
Pitch control adjusts the angle of the turbine blades relative to the wind. This angle is known as the pitch angle. Yaw control adjusts the orientation of the entire wind turbine nacelle to face the wind. Both pitch control and yaw control systems work together to ensure a wind turbine is operating efficiently and reliably towards maximum wind turbine power output.
