Passivity-Based Controller for Nonideal DC-to-DC Boost Converter

Abstract

This paper presents the design of a passivity-based controller for a nonideal DC-DC boost converter containing parasitic terms (NPBC). The PBC for the ideal case converter circuit leads to current and voltage offsets which are not tolerated in high-performance systems. All results have been obtained by simulation on both state-space averaging model and using the more realistic hybrid system model. The NPBC functions by keeping the prescribed inductor current at the desired value irrespective of the output load. With an appropriate computation of the equilibrium point in an adaptive manner, also shown in the paper, the capacitor voltage can be robustly controlled.