Predictive control of wind turbines by considering wind speed forecasting techniques

Narayana, Mahinsasa, Putrus, Ghanim, Jovanovic, Milutin and Lung, P. S. (2009) Predictive control of wind turbines by considering wind speed forecasting techniques. In: 44th International Universities Power Engineering Conference, 1-4 September 2009, Glasgow, Scotland.

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Abstract

A wind turbine system is operated such that the points of wind rotor curve and electrical generator curve coincide. In order to obtain maximum power output of a wind turbine generator system, it is necessary to drive the wind turbine at an optimal rotor speed for a particular wind speed. A Maximum Power Point Tracking (MPPT) controller is used for this purpose. In fixed-pitch variable-speed wind turbines, wind-rotor parameters are fixed and the restoring torque of the generator needs to be adjusted to maintain optimum rotor speed at a particular wind speed for optimum power output. In turbulent wind environment, control of variable-speed fixed-pitch wind turbine systems to continuously operate at the maximum power points becomes difficult due to fluctuation of wind speeds. In this paper, wind speed forecasting techniques will be considered for predictive optimum control system of wind turbines.

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