A high power factor electronic ballast of projector lamps with variable frequency control

Chun An Cheng, Tsorng Juu Liang, Chia Ming Chuang, Jiann Fuh Chen

Research output: Contribution to journalConference articlepeer-review

15 Citations (Scopus)

Abstract

A variable-frequency electronic ballast to shorten the projector lamp startup transition with feature of power factor correction is proposed in this paper. The circuit topology is composed of a boost converter as 1st stage and a half-bridge series-resonant parallel-load inverter together with a single-stage step-up igniter as 2nd stage. A 120W prototype was built to test and verify the characteristics of the proposed projector lamp ballast at start-up and steady state conditions. It was found that start-up time was reduced by nearly 50% and a high power factor above 0.98 could be achieved. In addition, the power converter is designed to operate at zero-voltage-switching to reduce power losses. Experimental results show good performance, verifying the functionality of the proposed ballast.

Original languageEnglish
Pages (from-to)213-219
Number of pages7
JournalPESC Record - IEEE Annual Power Electronics Specialists Conference
Volume1
Publication statusPublished - 2002 Jan 1
Event2002 IEEE 33rd Annual Power Electronics Specialists Conference (PESC) - Cairns, Australia
Duration: 2002 Jun 232002 Jun 27

All Science Journal Classification (ASJC) codes

  • Modelling and Simulation
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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