Abstract. Vertical Axis Wind Turbine (VAWT) is relatively simple to implement in urban areas on ground or/and building-roofs, the development of appropriate design of VAWT will open new opportunities for the large-scale acceptance of these machines. The primary objective of this research was to design and modeling of a small-scale VAWT, …

According to the alignment of the rotational axis, wind turbines can be categorized as either horizontal-axis wind turbines (HAWTs) or vertical-axis wind turbines (VAWTs). At present, HAWTs are globally adopted for electricity generation in both onshore and offshore large-scale commercial wind power units [4], [5].

Vertical axis wind turbine (VAWT) is a turbine in which the rotor axis is in the vertical direction. Since the rotor axis is in the vertical direction, these turbines need not be pointed into the wind to be effective make them advantageous for the usage on sites where the wind direction is highly variable. They are significantly quieter than ...

There are two primary types of wind turbines: horizontal axis wind turbine (HAWT) and vertical axis wind turbine (VAWT), which differ in their axis of rotation. A VAWT has blades that revolve around a vertical axis, in contrast to the other type of wind turbine, which has blades that rotate around a horizontal axis ( Ahmad et al., 2022c, Ahmad ...

The vertical axis wind turbine consists of an upper rotor and a lower rotor, with each rotor containing two NACA0021 blades connected by brackets. The two rotors rotate in opposite directions, with a disk generator attached between them and a floating platform at the bottom of the turbine.

Furthermore, Horizontal Axis Wind Turbine (HAWT) is relatively ineffective in urban situations and face local resistance due to noise, aesthetic, visual and public safety concerns [13]. Alternatively, Vertical Axis Wind Turbine (VAWT) has been predicted as a potential solution for the implementation of WTs in urban and semi-urban areas [14 ...

With perpendicular-to-the-earth blades that circle a tower—merry-go-round style—a lone vertical axis turbine harvests energy from the wind differently, but not more efficiently, than its horizontal brethren. A single vertical turbine has an efficiency in the range of 35 to 40 percent (though vertical turbine researchers are sure that number ...

Vertical Axis Wind Turbines (VAWTs) represent a unique form of power-generating technology. Historically, they have been relegated to fulfilling a small niche market in commercially available wind turbines due to their "yaw-less" design. Current VAWT designs lag behind their Horizontal Axis Wind Turbine (HAWT) counterparts in …

The Floating Axis Wind Turbine (FAWT), proposed by Akimono [115], consists of a vertical axis wind turbine with a variable inclination angle [118]. The floater could rotate with the turbine to guarantee stability and buoyancy, and the turbine axis tilts to balance the thrust force. The tilt angle is settled at 30°at nominal power.

Vertical axis wind turbine offer economically viable energy solution for remote areas away from the integrated grid systems. In order to spread the use of VAWT, the problems associated with various configurations, i.e. poor self-starting and low initial torque, low coefficient of power, poor building integration should be overcome.