Permanent Power Generating Wind Turbine with Doubly Fed Asynchronous Generator and Storage Unit, Modelling and Simulation

This paper deals with the design, analysis and simulation of wind turbine associated with a storage unit to generate a constant active power through the grid for all wind conditions. Variable speed wind turbine with a doubly fed induction generator which allows a large speed variation and so a large range of wind is employed. Associated with an inverter controlled with power reference, it is possible to adjust the injected power in the grid. The long duration storage unit connected to the DC bus allows producing a constant active power for all wind conditions. During strong wind the generator provides energy to the network and refills the storage unit and during insufficient wind the storage unit will compensate the lack of energy. The study deals with mainly the modelling of the mechanic and aerodynamic part of the wind turbine and the control of the rectifier-inverter in order to control the active and reactive powers for all wind and turbine speed conditions