Title :
A high power factor electronic ballast employing a quadratic forward topology
Author :
Morais, A.S. ; Coelho, E.A.A. ; Farias, V.J. ; de Freitas, L.C. ; Oliveira, J.C. ; Vieira, J.B., Jr.
Author_Institution :
Fac. de Engenharia Eletrica, Univ. Fed. de Uberlandia, Brazil
Abstract :
This paper presents high power factor electronic ballast used in fluorescent lamps. This topology has been obtained by combining a quadratic forward converter and an inverter topology. This topology is different from others because the quadratic forward converter is designed to provide a quadratic dependence on duty cycle and have an elevator transformer with high turn ratio, it provides low output voltage referred to input side.
Keywords :
fluorescent lamps; invertors; lamp accessories; power convertors; power factor; power factor correction; transformers; duty cycle; electronic ballast; elevator transformer; fluorescent lamps; inverter topology; power factor; quadratic forward converter; quadratic forward topology; turn ratio; Capacitors; Circuit topology; Diodes; Electronic ballasts; Fluorescent lamps; Frequency; Inductors; Low voltage; Reactive power; Switches;
Conference_Titel :
Industrial Electronics Society, 2003. IECON '03. The 29th Annual Conference of the IEEE
Print_ISBN :
0-7803-7906-3
DOI :
10.1109/IECON.2003.1280033
