Stability in passivity-based boost converter controller for power factor correction

This paper addresses the control of Boost converters applied for Power Factor Correction in universal-line applications with unknown load, using adaptive nonlinear control based on passivity. The closed loop system stability is discussed based on the analysis of the internal dynamics resulting from the use of the proposed control strategy. The performance of the proposed PFC rectifier is tested on an experimental 630-W universal-line PFC prototype.