Modified Synchronous-Buck Converter for a Dimmable HID Electronic Ballast

Author

Stankovic, Ana Vladan ; Nerone, Louis ; Kulkarni, Prerana

Author_Institution

Dept. of Electr. & Comput. Eng., Cleveland State Univ., Cleveland, OH, USA

Volume

59

Issue

4

fYear

2012

fDate

4/1/2012 12:00:00 AM

Firstpage

1815

Lastpage

1824

Abstract

In this paper, a simple and effective way of increasing the efficiency of a three-stage low-frequency dimmable high-intensity-discharge (HID) electronic ballast is proposed. To increase the efficiency at all dimming levels, a modified synchronous-buck converter operating in a new critical conduction mode is presented. The proposed modified topology of the synchronous-buck converter operates in a soft-switching mode and therefore significantly increases the efficiency of the three-stage low-frequency HID electronic ballast at all dimming levels. Analytical and experimental results for a dimmable 400-W HID lamp are presented.

Keywords

discharge lamps; lamp accessories; power convertors; dimmable HID electronic ballast; high-intensity-discharge electronic ballast; modified synchronous-buck converter; soft-switching mode; Electronic ballasts; Equations; High intensity discharge lamps; Inductors; Resistors; Switches; Dimming; high-intensity-discharge (HID) ballast; lighting; synchronous buck;

fLanguage

English

Journal_Title

Industrial Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0278-0046

Type

jour

DOI

10.1109/TIE.2011.2141094

Filename

5746526