GENERAL-ANALYSIS OF HARMONIC TRANSFER THROUGH CONVERTERS

Harmonic transfer from de-side to ac-side and vice-versa through a thr ee-phase bridge converter is treated by using space vectors. The depen dency of the relative frequency of a harmonic and its sequence (positi ve/negative) is illustrated. It is shown that the derived relationship s are valid for both voltage-source and current-source converters. The reby, the relationships for the frequency transformation through conve rters are also valid for both voltage and current harmonics. The analy tical method is validated by digital simulations with EMTP.