nan Himanshu

Research test set up for wind turbine models

This paper gives details of wind turbine test set up. It is an in house test set up to test wind turbine models. With the help of this test set up wind turbine blades can be tested. Various models of wind turbine towers can be tested. Wind turbine power quality parameters can be tested. This is a mobile wind turbine test set up.

Impact of vertical wind shear on wind turbine performance

This is paper presents significance of vertical wind shear. Voltage flicker that may be initiated in the output of the horizontal axis upwind wind turbine located at any given site for a given tower height and blade length. Vertical wind shear is one of the important parameters which instigate voltage flicker in wind turbine output voltage. In this paper diverse origins of flicker, places where wind shear occurs, computation of wind shear, general impacts of wind shear, impact of wind shear on wind turbine output is discussed.

Deicing of wind turbine blade by high frequency dielectric heating fabricating blade as a capacitor

In this paper wind turbine blade is formed as a capacitor. The ice accumulated on the wind turbine blade is removed by dielectric heating. High frequency supply is used for heating. The metallic plates are embedded in the wind turbine blades when the blade is being manufactured. The metallic plates are separated by the insulation medium. The plates are completely coverd by the insulating material. This construction also enhances the strength of the wind turbine blade due to reinforcement by the metallic plate. The supply is given to the blade capacitor when the ice is accumulated. The ice is sensed by ice sensor. The supply to the capacitor may be given by the battery bank. The wind turbine is stopped when the ice is being removed by dielectric heating. The area below the wind turbine is vacated. The human beings and animals are not allowed to go near the turbine as the ice may fall below and the person or animal may be injured due to ice.

Application of wind rose for wind turbine installation

In a conventional wind rose only wind frequency, magnitude, and direction of wind for a particular site is given. But in this paper vertical wind shear is also represented in a wind rose for eight directions. In that diagram minimum vertical wind shear and maximum vertical wind shear for a particular site is represented. For calculation power exponent law is also used. Representation of vertical wind shear in a wind rose is the research component in this paper. The wind rose for vertical wind shear may be useful to predict the flicker initiated in the wind turbine. in this research readings are taken at different sites like Parwati hill, Jambhulwadi lake and Taljai hill in the Pune city. The wind rose of vertical wind shear for one of the sites is given.

Sixth order model of wind turbine voltage flicker considering vertical wind shear

Diverse models of voltage flicker are established by researchers. Each model has its own disadvantage. In this paper analysis of various models is done. The models consist of various wind turbine parameters like wind turbine tower height, surface roughness of the region, building height if the turbine is mounted on a building or hill height and slope of the hill on which the turbine is mounted. Sixth order model is most appropriate for wind turbine output voltage flicker.