Patent ID: 9048768
Filing Date: 2015-06-02
Classification: F03D,F05B,H02P,Y02E

Abstract:
1. A method for controlling an energy generation plant, comprising arrangement of position sensors in a drive train of the energy generation plant, which energy generation plant has at least one mechanical rotor, a drive shaft, a step-up transmission, a generator with a rotor/stator unit and power electronics; detection of rotation angle differences by the position sensors; monitoring the rotation angle increase of the step-up transmission and the overall twisting of the drive train; parallel simulation by an equation system in a central control unit on the basis of a model of the energy generation plant comprising mass and spring damping elements; and generation of nominal values for a current change difference and a phase difference of the current with respect to a generator voltage, the nominal values being used by a current control of the generator to compensate for transient oscillations in the energy generation plant, wherein the model of the energy generation plant takes account of two active elements in the form of a wind power input and electrical power output with passive elements arranged between them, the passive elements including inductances, capacitances, and spring stiffnesses of structural elements.