Abstract

The conventional direct torque control scheme for induction motor drives is extended to directly control the active power delivered to the grid by a wind turbine driven induction generator. The generator is interfaced to the grid through an AC-AC matrix converter. A constant switching frequency based direct power control scheme with flux and power controllers is proposed. The space vector modulation method is used to synthesize the pulse width modulated output voltages from the matrix converter and to control the power factor of the currents on the grid side. The Model predictive controller is used for controlling the active and reactive power generated from the generator. Simulation for the same is carried out with MATLAB Simulink and the results are analyzed.