Embedded Emulater Controller for Induction Generator

With faster rate of depletion of fossil fuels the world has now started to greatly depend on renewable sources of energy. Wind energy is undoubtedly one of the most effective weapons to handle the situation. In this paper efforts have been taken to optimize the wind energy generation by induction generator using an embedded based controller. This paper involves a controller design which amalgamates two key functions viz. automatic voltage regulation and frequency control .The automatic voltage regulator is incorporated with the help of flux control. The proposed controller regulates the excitation current of the induction generator to regulate the generated three phase voltage. The reactive power balance of the system can be maintained within tolerable limits by using VAR condensers which is switched accordingly by the embedded controller. The frequency control can be implemented by adjusting the wind turbine pitch according to the wind inrush by measuring the wind speed. The controller provides control pulses to actuate stepper motor suitably which drives the blade to orient itself appropriately .A simulation model is also developed to illustrate this control strategy. The wind is simulated by considering the average wind characteristics.