Datta. S. Chavan

Assessment of flicker owing to turbulence in a wind turbine placed on a hill using wind tunnel

This paper bequeaths particulars of impact of turbulence on the flicker produced in the wind turbine which is sited on that surface. This is achieved in a laboratory wind tunnel with small models of hills with different slopes and wind turbine. Different shapes of models of hills placed in a laboratory wind tunnel. Wind turbines are tested for those conditions. The paper provides an empirical model to find flicker in terms of hill topography. The exquisiteness of the model is that, it is expedient to sundry types hills on which the turbine is sited. Validation of model is carried out with comparative graphs revealed with readings recorded on a turbine in tunnel.

Computation of flicker as a result of turbulence in a wind turbine sited on a green building using wind tunnel

Paper presents a newfangled empirical model to figure, flicker, instigated in the horizontal axis, upwind turbine, due to wind turbulence, in continuous operation. Postulations, boundary curbs and limitations of the model are also depicted. In the proposed model, wind turbulence, number of blades, blade length and tower height are echoed. The exquisiteness of the model is that, it is expedient to range of heights of structures on which the turbine is sited. Validation of model is carried out with comparative graphs revealed after vigorous experimentation on a turbine in a tunnel with various heights of models of buildings.

Computation of flicker due to vertical wind shear in a wind turbine sited on a hill using wind tunnel

In the paper empirical model of flicker initiated in a wind turbine sited on a hill is established. Paper offers ins and outs of impact of various shapes of hills on vertical wind shear and consequently on the flicker produced in the wind turbine which is sited on that surface. In the model vertical wind shear, length of the turbine blade, tower height, slope of the hill are reverberated. The exquisiteness of the model is that, it is expedient to sundry types of hills on which the turbine is sited. Postulations, boundary curbs and limitations of the model are also depicted.

A novel Neem based supercapacitor and its modeling using artificial neural network

The emergence of supercapacitors as an environment friendly energy storage device has generated a lot of interest in industry and academia. Carbon used in this device for making of electrodes can be derived from biomass. This study tries to use dried Neem leaves as a precursor to produce activated carbon. This carbon is then used to develop supercapacitors which are found to have high specific capacitance. The specific capacitance was then modelled using artificial neural network for various input parameters like temperature of activation and percentage of Neem based activated carbon.

Prediction of power yield from wind turbines for hilly sites

In this paper the site survey is done for four sites in Pune India. The electrical power is predicted for each site for different tower heights of the wind turbine. Different lengths of blades of turbine are also considered for power prediction. This method involves site survey using anemometers. This method involves low cost and less manpower.

Modeling of flicker in wind turbine on a green building due to vertical wind shear

Paper confers a newfangled empirical model to figure, flicker, instigated in the horizontal axis, upwind turbine, due to vertical wind shear, in continuous operation. Postulations, boundary curbs and limitations of the model are also depicted. In the proposed model, vertical wind shear, number of blades, blade length and tower height are echoed. The elegance of the model is that, it is expedient to range of heights of buildings on which the turbine is sited. Substantiation of model is carried out with comparative graphs revealed after fervent experimentation on a turbine in a tunnel with various heights of models of buildings.

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.