가변 피치형 부유식 수직축 풍력발전기의 발전효율에 관한 연구

Abstract

This thesis is for the research of generating efficiency of the vertical axis and variable-pitch floating wind turbine. This new concept wind turbine is designed to have variable pitch angles while the rotor blade is rotating with the direction of the wind. For the most efficient wind turbine design, I analyzed output characters from the integration between the blade's variable-pitch range, fixed pitch angle, external force of ocean environment and the wind turbine through a wind tunnel test using 2-dimensional basin as well as the floating wind turbine test using the ocean engineering basin. Also, when evaluating for the mechanical efficiency (disregarding the electric efficiency) of the wind turbine, I performed a mechanical power measuring test of torque and the RPM of the generator's pivot