Title :
Proposal of a hysteresis controller with constant switching frequency
Author :
Galelli, Marcos Tadeu ; da Silva Vilela, Mhcio ; Coelho, Ernane Antonio Alves ; Vieira, João Batista, Jr. ; De Freitas, Luiz Carlos ; Farias, Valdeir José
Author_Institution :
Power Electron. Res. Group, Uberlandia Fed. Univ., Brazil
Abstract :
This paper introduces a new control technique for power factor correction in ac-dc converters. It combines the advantages of conventional hysteresis control strategy and the prominent characteristics of constant switching frequency. This is possible because the hysteresis bandwidth can be adjusted to provide fixed switching frequency. The operating principles, theoretical analysis and results on a single-phase boost converter are presented to validate the proposal.
Keywords :
AC-DC power convertors; harmonic distortion; hysteresis; power factor correction; switching convertors; ac-dc converters; constant switching frequency; hysteresis control strategy; power factor correction; single-phase boost converter; AC-DC power converters; Circuits; Hysteresis; Power system harmonics; Proposals; Pulse width modulation; Switches; Switching frequency; Topology; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2005. APEC 2005. Twentieth Annual IEEE
Print_ISBN :
0-7803-8975-1
DOI :
10.1109/APEC.2005.1453276
