The Effect of The Blade Pitch Angle of a Small-Scale Vertical Axis Wind Turbine on its Energy Output and Starting Performance

Abstract

This study investigates the effect of blade pitch angle on energy output and start-up performance in a small-scale vertical-axis wind turbine. The angle of the blade pitch is an important design factor in wind turbines since it directly affects the aerodynamic forces. Therefore, different pitch angles can alter the turbine's efficiency and its ability to start operating independently. A small-scale wind turbine designed in a laboratory environment was used in the study. Experiments were conducted at three different blade pitch angles under constant wind conditions. Energy output was calculated by measuring the voltage and current values produced. Initial performance was evaluated based on the turbine's start-up time. Additionally, the results show a pitch angle increase of 5 to 10.72 degrees, which improves the efficiency of the system. Pitch angle increases from 5 to 10.72 degrees, increasing power output. The power output and the system's associated power efficiency both dropped between 10.72 and 20 degrees.