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This paper proposed a novel internal model control (IMC) - PID design based pitch angle controller for a wind farm. The studied system consists an equivalent aggregated model of squirrel cage induction generator (SCIG) driven by aggregated horizontal axis wind turbine connected to a 120 kV utility grid. The linearized model of wind turbine generator (WTG) unit using linear analysis Toolbox (MATLAB/SIMULINK)...
The variation in wind speed causes the variation in the real/reactive power transfer of Squirrel Cage Induction Generators (SCIGs) based wind energy system (WES) connected to the grid resulting in fluctuations in the grid voltage and frequency. The SCIG based wind energy systems have to rely upon the mechanical pitch angle control of their wind turbines to smoothen out power fluctuations. This paper,...
In the present paper identification of power quality events using inverse properties of Stockwell Transforms has been carried out. Identification of power quality problems using the classic Stockwell Transforms though is able to determine both sudden and gradual changes in the signal. However, for some typical cases the signatures are not unique and thereby lead to misinterpretation of the power quality...
Accurate identification of domestic nonlinear loads using Hartley Stockwell transform has been proposed in this paper. The method uses the scalable cas window as its kernel which dilates and translates with the time varying function and hence results in very high time and frequency resolution. Hartley S-transform produces unique signatures for each type of nonlinear load. The proposed method is more...
In the present paper HVDC fault analysis using Stockwell Transforms is carried out. Stockwell Transform is utilized for the real time prediction of the disturbance as it accurately determines the sudden changes in the signal. The method uses the scalable Gaussian window which dilates and translates the time varying function and hence the prediction is very accurate. The presented technique has been...
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