Patent ID: 9397599
Filing Date: 2016-07-19
CPC Classification: F03D,G01R,H02J,H02P,Y02E

Claim Text:
1. A harmonic predictor for a wind farm comprising at least two wind turbines, each having a generator with a converter for generating electrical energy, wherein a limit for the harmonic component generated by the wind farm is determined, the harmonic predictor comprising: a calculation module that calculates a complex mean value over at least one period of the harmonic component of one of the wind turbines and determines a first equivalent vector therefrom, an iteration module that successively connects the calculation module to at least one other of the wind turbines to form at least one second equivalent vector, and a summing module that sums the equivalent vectors to form a total vector and compares the total vector with the harmonic limit, wherein the determining of an equivalent vector comprises calculating a mean value of a real part of the harmonic component of the respective wind turbine and calculating a mean value of an imaginary part of the harmonic component of the respective wind turbine.