System Architecture of a 2 kW Variable speed generator test bed

Apart from quantifying the power curve of a stand alone aero-generator, it is important to characterize the generator. Lab level testing of the generator needs to be carried out to quantify the various losses and evaluating the off-design performance. Therefore, it is necessary to have a versatile test bench to study the generators, indigenously developed at NAL for small wind turbine application. In view of this acute need of a test bench, the design of a Variable Speed Generator Test bed is done. The rating of the generators, that would be tested, is restricted to 2 kW and less

Preliminary studies of the Aero-generator for battery charging application

The present report gives a brief overview of the Indian Small Wind Turbine Market. The macroscopic scenario is presented and aspects such as domestic and foreign marked potentials, barriers, technology needs and the strategies required to boost the small wind turbine sector are presented. NAL’s wind turbine development program, since its establishment in 1959, has been presented and different machines developed at NAL. Finally, NAL’s vision of developing a 500 W class stand alone horizontal axis wind turbine for battery charging is explained. This project would aim at utilizing NAL’s experience and expertise in aerospace domain to develop an indigenous wind turbine system. A variant of this can be considered for urban and military application also. The basic strategy is explained. The report ends with a note committing the realization of a 500 W wind turbine system, whose development would be consumer as well as market driven. The report gives a strategic description of the project and no technical issues have been included. However, subsequently, as NAL progresses along its predefined strategy of developing 500 W wind turbine under the 11th Five Year Plan, the technical and design reports of all the aspects like rotor aerodynamic and structural design, drive-train, generator, tower and controller would be brought up

Procedure for commissioning and operation of the NMITLI 500kW Wind turbine system

The report details procedure for rectification, installation and starting, running and stopping of the turbine. Also details the important points needed to be checked for before and during the running of wind turbine

Field trials of the NMITLI 500 kW Horizontal-Axis Wind Turbine System

After the commissioning of the 500 kW Wind Turbine at the field test station, Sangeeth Wind Farm, Kethanur, Tamil Nadu, preliminary field trials commenced in 2009. The intention of these field trials was to ensure that the runs were smooth and that there were no instabilities in terms of the mechanical integrity of the system. Also, the wind turbine was run to check whether dynamically there were any points of concerns. At the same time, the Data Acquisition System (DAS) was in place and its proper functionality was also to be ensured. Hence, during the 2009 and 2010 wind season, the power curves were measured with the DAS. The present document gives a brief account of the field trials during the 2009 and 2010 wind season