2.65 MHz self-oscillating electronic ballast with constant lamp-current control for metal halide lamp

Ray-Lee Lin, Zhi Qiang Wang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

This paper presents the 2.65 MHz self-oscillating electronic ballast with constant-lamp-current control for metal halide lamp. To avoid the inherent acoustic-resonance problem of metal halide lamps, the switching frequency is chosen to be above 1 MHz. Furthermore, in order to satisfy higher magnitudes of maximum EMI limitation at frequencies in between 2.5 MHz to 3.0 MHz, the ballast's switching-frequency level was selected to be 2.65 MHz, which falls within the frequency range "chimney," for RF lighting systems, such as electrodeless fluorescent lamps. The conventional self-oscillating electronic ballast is disadvantageous because the lamp-current varies according to the input voltage. This difference in lamp-current causes poor quality of illumination for the lamp. In order to solve this issue for the self-oscillating electronic ballast, the constant-lamp-current control circuit is proposed to provide constant lamp-current. Finally, a 20 W self-oscillating ballast with the proposed constant lamp-current control for metal halide lamp is implemented in order to demonstrate the ability to avoid the acoustic-resonance and to provide constant levels of lamp current.

Original languageEnglish
Title of host publication37th IEEE Power Electronics Specialists Conference 2006, PESC'06
DOIs
Publication statusPublished - 2006 Dec 1
Event37th IEEE Power Electronics Specialists Conference 2006, PESC'06 - Jeju, Korea, Republic of
Duration: 2006 Jun 182006 Jun 22

Publication series

NamePESC Record - IEEE Annual Power Electronics Specialists Conference
ISSN (Print)0275-9306

Other

Other37th IEEE Power Electronics Specialists Conference 2006, PESC'06
CountryKorea, Republic of
CityJeju
Period06-06-1806-06-22

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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