Method and system for controlling switching frequency of a doubly-fed induction generator (DFIG)

摘要

The present subject matter is directed to systems and methods 300 for controlling variable speed generators, particularly converters associated with doubly-fed induction generators (DFIG) 100 to permit use of harmonic attenuating filters 112, 212, 214 that are generally smaller and less costly than previous similar filters. The subject matter provides for controlling line-side 104, 204 and rotor-side converters 106, 206 in such a manner that the frequencies generated by the converters are interleaved in a manner that the filters 112, 212, 214 see a higher switching frequency and thus may be designed based on those higher frequencies, thereby requiring smaller and less expensive components.