Friday 22 September 2017
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1 months ago

MATHEMATICAL MODELLING OF POWER OUTPUT IN A WIND ENERGY CONVERSION SYSTEM


The developments of wind energy systems have enabled an efficient production and use of wind energy. Three widely used control schemes for wind energy systems are Pitch control, Rotor resistance control and Vector control. A traditional wind energy system consists of a stall regulated or pitch control turbine connected to a synchronous generator through gearbox. The synchronous generator operates at fixed speed and one of the earliest rotor control schemes was the rotor resistance control. The speed of an induction machine is controlled by the external resistance in the rotor circuit. The drawback of the above methods is the inability of wind turbine to capture at low wind speeds. This paper develops a model which maximizes wind energy output. This model asses the effects of friction coefficient and the height of wind above ground(given by the height of turbine from the ground i. e the hub height) on power output. The study considers an already existing model, that is the turbine model in which

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