Power quality monitoring and control for DFIG wind generation

As wind power is growing towards becoming a major utility source, it is urgent to guarantee the reliable operation of wind power systems. The power quality monitoring system for wind turbine based on vibration analysis is studied. The rotor imbalance is successfully detected by using machine vibration analysis. Moreover, the systematic control design of the proposed vibration suppression by means of a rotor side inverter controller is explored and discussed. The real wind speed data of three different cases from the ERCOT system were used as input to test the performance and capabilities of the control scheme. The simulation results of the generator output show the effectiveness of this proposed rotor side inverter controller. It effectively reduces the oscillation of power output of the DFIG wind turbine.