Design of Passivity Based Robust Control of AC / DC Power Converter for Power Factor Improvement and Voltage Regulation

Abstract

In this work an Interconnection-and-Damping Assignment Passivity-based control (IDA-PBC) for a full-bridge rectifier is investigated. The controller design takes advantage of the generalized state space averaging (GSSA) modeling technique to convert the quoted nonstandard problem (in actual variables) into a standard regulation one (in GSSA variables). The transient behavior of the system, along with the controller is obtained through computer simulation. The closed-loop system performance fulfils unity power factor in the AC mains and output DC voltage regulation. In particular, the technique is shown to be effective and robust with respect to load variations.