Abstract
This paper describes the performance and power augumentation effect of three-bladed wind turbine. Three sets of blade were tested. The blade had the same geometry and configuration, but were different on the way of arranging airfoil sections. One of them is tapered blade which consists 4 kind of aerofoil section and twisted, the others are slant arranged aerofoil of it. The performance data are given and relationship between the performance, and the flow behavior around the blade obtained by use of LDV is investigated.
