A BIFRED converter with a wide load range

Author

Willers, M.J. ; Egan, M.G. ; Murphy, J.M.D. ; Daly, S.

Author_Institution

Dept. of Electr. Eng. & Microelectron., Univ. Coll. Cork, Ireland

Volume

1

fYear

1994

fDate

5-9 Sep 1994

Firstpage

226

Abstract

In this paper, the boost integrated flyback rectifier energy DC-DC (BIFRED) power converter which incorporates power factor correction, output voltage hold-up and input-to-output isolation is examined. The particular problem of high bulk capacitor voltage at light loads is addressed and it is shown how this may be resolved if the boost and flyback sections of the power converter are allowed to operate discontinuously. The criteria for ensuring correct operation in the discontinuous mode are investigated. It is shown that operating in this mode places no restrictions on the minimum load and simplifies the control loop design

Keywords

DC-DC power convertors; circuit testing; control system analysis; control system synthesis; load (electric); network analysis; network synthesis; power factor correction; rectifying circuits; voltage control; BIFRED; boost integrated flyback rectifier energy DC-DC power converter; bulk capacitor voltage; control loop design; discontinuous mode operation; input-to-output isolation; light load; load range; minimum load; output voltage hold-up; power factor correction; Bandwidth; Capacitors; Circuits; DC-DC power converters; Power factor correction; Power harmonic filters; Rectifiers; Switches; Topology; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on

Conference_Location

Bologna

Print_ISBN

0-7803-1328-3

Type

conf

DOI

10.1109/IECON.1994.397781

Filename

397781