Disain, Analisa dan Simulasi Dinamik Passive Blade Pitch Control untuk Turbin Angin Kapasitas 10 KW

Abstract

Small wind turbines utilize various mechanisms to regulate and to limit the rotor speed. One of these mechanisms is by altering the blade pitch angle when the wind speeds increase. Passive Blade Pitch Control applies centrifugal force of rotating masses (flyweight) to produce enough moment and to spin blade on its longitudinal axis. This mechanism involves a spring to vary the value of pitch angle and to produce the return moment, and a damper component to reduce the vibration effects. This final project presents an initial study in designing and analyzing Passive Blade Pitch Control for 10 KW-wind turbine using geometrical data of rotor system from PT. Rotary Corp. The optimum controlling parameters were obtained when the steady state of angular velocity was 200 rpm and the displacement of pitch angle was 8 degrees. Deriving equation of motion, modeling and linearization were also performed in order to get a good system performance. The analyzed system was assumed as a rigid system with one degree of freedom. Electrical load torque and pitching moment were neglected. Computer Aided Design (SolidWorks) was used to model system, and then simulated in SimMechanics and visualNastran environment to verify the calculated results from the derived equation of motion and model. Key words : Wind Turbine, Power, Pitch Angle, Passive Blade Pitch Control, Centrifugal Force.