Abstract
In this paper, the authors propose three robust non-linear controllers based on a second order sliding mode technique named super-twisting method which can be applied into work bench for research related to wind system. The main control scheme is proposed to control the electromagnetic torque and stator power factor of a wound rotor induction generator connected to a local electrical network and mechanically coupled with a DC-motor whose velocity is controlled applying feedback linearization technique and super-twisting algorithm; it is known that the DC-motor can be emulate the operation of the wind turbine. Finally, a grid side converter controller is proposed to regulate the DC link bus located between to power converters connected in “back to back” standard configuration, applying linearization by block control and super-twisting algorithm. The performance of the designed controllers for the DC motor-WR induction generator group is validated through real time implementation.
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