Development of a small-signal model for a two-phase three-wire active power filter

Abstract

This paper deals with the development of a small-signal model for a two-phase three-wire active power filter. The proposed structure and its control system are analyzed and discussed. Transfer functions (s-domain) for current and voltage control loops are presented. Validation of proposed models are made by means of comparison among theoretical and simulated AC sweep frequency response of system. In addition, a DC-link voltage control loop simplification, which allows to perform controller design similar to the one used for a single-phase active power filter, is discussed and proposed.