Integral-Proportional plus Resonant Controller in the Synchronous Reference Frame for Converters in Applications in Wind Power Generation Systems

In this work, a method for tuning Proportional Integral plus Resonant controllers (PI+Res) is shown, this method is based in the utilization of a more complete model of the converter, which includes the dynamics of the filters in the signal measurement and conditioning system, as well the time delay introduced by the A/D conversion and the delay produced by the PWM modulation. This controller was implemented on a grid side converter to eliminate the current harmonics produced by the non-linear characteristics of this type of inverters and those produced by the interaction of the inverter with voltage harmonics. The main characteristic of this controller is its implementation on the synchronous reference frame (dq) which allows to compensate the pairs of frequencies 1+6k and 1-6k by each resonant controller.