A novel single-stage off-line converter with PFC and fast output voltage regulation

Author

O´Sullivan, D. ; Egan, M.G. ; Willers, M.

Author_Institution

PEI Technol., Univ. Coll. Cork, Ireland

Volume

1

fYear

2000

fDate

6/22/1905 12:00:00 AM

Firstpage

445

Abstract

A single-stage, isolated, low cost, LC resonant based power supply circuit incorporating power factor correction and fast output voltage regulation is proposed. Advantages of this topology include soft switching of power devices, output voltage holdup and control loop simplicity. The recently introduced rectifier compensated fundamental mode approximation (RCFMA) method is used to provide an accurate yet simple analysis of the circuit. This approximation is extended to provide a small signal model of the converter which is used to design the control loop. Results from a 5 V, 20 A prototype are presented

Keywords

AC-DC power convertors; closed loop systems; control system analysis; control system synthesis; harmonic distortion; power conversion harmonics; power factor correction; power supplies to apparatus; rectifying circuits; resonant power convertors; switching circuits; voltage control; 20 A; 5 V; LC resonant based power supply circuit; control loop design; control loop simplicity; fast output voltage regulation; output voltage holdup; power devices; power factor correction; rectifier compensated fundamental mode approximation; small signal model; soft switching; Circuit analysis; Circuit topology; Costs; Power factor correction; Power supplies; RLC circuits; Rectifiers; Resonance; Signal design; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 2000. APEC 2000. Fifteenth Annual IEEE

Conference_Location

New Orleans, LA

Print_ISBN

0-7803-5864-3

Type

conf

DOI

10.1109/APEC.2000.826141

Filename

826141