TESTING OF VERTICAL AXIS WIND TURBINE IN SUBSONIC WIND TUNNEL

A wind turbine is a rotary device that extracts energy from the wind. Any wind turbine comprises of three main components, namely: rotor, generator and structural support. Based on the alignment of their shafts of rotation, two types of turbines are designed – Horizontal Axis Wind Turbines (HAWT) and Vertical Axis Wind Turbines (VAWT). Although the VAWTs have been in use right from 200 BC, only in the recent times the availability of material and construction techniques has made the design attractive again. One such development is the inception of VAWTs with a helical twist. Helical turbines provide steadiness of aerodynamic force and torque, giving a smooth power distribution. In this paper the vertical axis wind turbine with V-type has higher efficiency compared with savonius wind turbine is developed and performances are measured.

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