Wind power generation air dynamic brake

Are aerodynamic braking systems effective to control wind turbine rotor speed?

The aerodynamic braking systems are effective to control the wind turbine rotor speed . There limited research work conducted on wind turbine braking systems. The importance of a wind turbine braking system for the wind turbine is described in this paper. This system has been installed as the addition to a general control system.

What braking system does a wind turbine use?

Hence it is essential to have an effective braking system to slow down rotational speed of the rotor during the higher wind velocity. Though mechanical braking system and aerodynamic braking system are the part of the wind turbine, the aerodynamic braking is primary braking system of the wind turbine.

What are the different types of aerodynamic braking systems?

The important aerodynamic braking systems are pitchable tips, tip vanes, spoilers, flip-tip, and ailerons. The active pitch control i.e. pitchable tips is a primary and effective aerodynamic braking system. It provides more precise control of the wind turbine.

Can chordwise spacing aerodynamic braking system be implemented in large scale wind turbines?

This chordwise spacing aerodynamic braking system can be implemented in large scale wind turbines in future. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. Data will be made available on request.

What is the optimum length of a wind turbine braking system?

The newer kind of aerodynamic braking system for wind turbine has been analyzed both normally and experimentally. In the computational work the length of the slot has been optimized. The 10% of the span length i.e. 0.1R is found as the optimum length. It is concluded that there is no variation in the torque generated at the lower wind velocity.

What is the difference between mechanical and aerodynamic brake system?

As shown in Fig.1, the mechanical brake system is normally placed on the high-speed shaft, consisting of a brake disc and a number of calipers driven by a hydraulic system. The aerodynamic brake system uses the pitch control to feather the blades aligned with wind direction so as to brake the rotation.