Active dynamic damping of torsional vibrations by H∞-Control

For wind energy conversion process, high load peaks result from the stochastic fluctuation of the wind. Those load peaks propagate in the power train of the electro mechanical drive system to the power grid and at the same time excite torsion oscillations. For smoothing the load peaks as well as damping the torque oscillations a novel torque control was designed. The new torque control is based on the H∞-Control and was compared to standard control methods such as PID control.