Abstract
This paper presents a numerical and experimental analysis of the patent of a device to be used in vertical-axis wind turbines (VAWTs) under extreme wind conditions. The device consists of two hemispheres interconnected by a set of conveniently implemented variable section ducts through which the wind circulates to the blades. Furthermore, the design of the cross-section of the ducts allows the control of the wind speed inside the device. These ducts are intended to work as diffusers or nozzles, depending on the needs of the installation site. Simulations were performed for the case of high-speed external wind, for which the ducts act as diffusers to reduce wind speed and maintain a well-functioning internal turbine. Four different patent designs were analyzed, focusing on turbine performance and generated power. The results indicate that the patent allows the generation of electric power for a greater range of wind speeds than with a normal wind turbine. The results support that this patent may be a good alternative for wind power generation in geographic areas with extreme weather conditions or with maintained or strong gusty wind. Experimental tests were carried out on the movement of the blades using the available model. Finally, the power curve of the model of this wind turbine was obtained.
Highlights
In the current state of the global energy market, there is a great need to continue developing renewable energy, reducing dependence on fossil fuels and avoiding emissions of greenhouse gases, as well as to benefit from the other advantages of this type of energy
This paper presents a numerical and experimental analysis of the patent of a device to be used in vertical-axis wind turbines (VAWTs) under extreme wind conditions
Simulations were performed for the case of high-speed external wind, for which the ducts act as diffusers to reduce wind speed and maintain a well-functioning internal turbine
Summary
In the current state of the global energy market, there is a great need to continue developing renewable energy, reducing dependence on fossil fuels and avoiding emissions of greenhouse gases, as well as to benefit from the other advantages of this type of energy. There are many experimental [17,18,19,20,21,22,23,24] and theoretical or numerical [25,26,27,28,29,30,31,32,33,34,35,36] investigations These works show the interest that exists for these types of wind turbines, and they open up a wide range of possibilities for actual use [37] in large, medium, and small electricity generation facilities. As has been previously noted, the use of these kinds of systems is not feasible in locations with extreme winds unless wind-tenable structural and productive conditions can be provided In this regard, there is a low number of patents related to covers for wind turbines, and none are specified to work with strong winds.
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