Title :
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
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;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on
Conference_Location :
Bologna
Print_ISBN :
0-7803-1328-3
DOI :
10.1109/IECON.1994.397781
