Studies on Stack Type Wind Turbine

Abstract

A high-speed wind turbine was made in which multi-blade portion and two-blade portion were attached on the same shaft to get excellent motive power. Based on the value obtained from the separate portion tests, the pitch angle to be used in multi-blade portion was decided to be 17 degrees as the starting performance was the most excellent, and 7 degrees was also employed because of its high output power on the two-stage stack type. Experiments turbine were performed in the combinations of above mentioned angles under the same condition of average wind velocity as the single phase experiment.