Impact of Blade Length on the Horizontal Wind Turbine Output Power and Torque

Power plants using fossil fuel are always used to meet the needs of the load at any time. However fossil fuels can cause air pollution. An alternative that can be used to reduce fossil energy is renewable energy source type of wind power plant (WPP). Currently WPP is only limited to reducing the use of fossil fuels and it has not been able to replace fossil energy sources. Because the power generated by WPP is still small capacity. For this reason, it is necessary to carry out continuous research on WPP to increase output power. This paper aims to determine the impact of the horizontal wind turbine blade length to output power and torque. In the method, the length of the turbine blade is varied, so there is also a change in the sweep area value. The effect of swept area, wind speed, turbine rotation speed, and Cp on the output power and torque is presented in curve. The results of the simulation are the highest power and torque at the blade length of 5 m. The highest power obtained is 69.74 kW, and the highest turbine torque is 66.9 kN.m. The longer the turbine blade, the higher the wind turbine power and torque.