FILTERING METHOD FOR THE ALTERNATING CURRENT SIDE OF A POWER CONVERSION SYSTEM, AND POWER CONVERSION SYSTEM

摘要

A filtering method for the alternating current side of a power conversion system by a filter circuit, and system that includes the filter circuit. Said filter circuit includes a filter capacitor circuit and a damping circuit connected to the filter capacitor circuit. Upon determining that the power conversion system operates under steady state conditions, the damping circuit of the filter circuit is caused to present a first impedance value for the current that flows through said damping circuit, and upon determining that the power conversion system is operating under transient state conditions, said damping circuit is caused to present a second impedance value for said current.