. 185 Downloads.AbstractThe present study is about pitch control system of a small wind turbine using hinge mechanism. Small wind turbines generally apply stall control method or breaking equipment over the rated wind speed by reason of price or efficiency. However we perform pitch control applying the hinge mechanism which is simpler than that of medium and large size wind turbines. The hinge mechanism is a kind of linkage.
It is composed of a rotation motion part, a linear motion part and a connection part. Pitch angle is controlled by the rotation parts which are connection to blades. In order to determine relationship between the hinge links and pitch angle, kinematic analysis is performed. Also, we derive design specifications of the actuator which drives the hinge mechanism by the Jacobian analysis. Simulation using MATLAB analyses forces and velocities of the hinge type pitch control system.
![Wind Wind](/uploads/1/2/5/4/125480504/720667461.jpg)
Challenges in Pitch Control. Pitch controls are in the hub of the wind turbine where each blade requires a pitch actuator. To repair or service a pitch controller, technicians must usually travel to a remote site, climb 260 to 525 ft (80 to 160 m), unless the turbine comes equipped with a lift or small elevator. The pitch system is the most critical safety subsystem of the wind turbine, at the same time, the pitch system is critical for optimizing the power production. DEIF Wind Power Technology develops high quality standard solutions to optimise turbine pitch control and designs dedicated products to complete pitch solutions such as the pitch drive.
Finally, as applying it to a 20 kW small wind turbine, the performances are evaluated by wind tunnel test.