Title :
Electronic ballast for HID lamps with high frequency square waveform to avoid acoustic resonances
Author :
Ponce, M. ; López, A. ; Correa, J. ; Arau, J. ; Alonso, J.M.
Author_Institution :
Dept. de Electron., Centro Nacional de Investigacion y Desarrollo Tecnologico, Cuernavaca, Mexico
Abstract :
This paper presents a driver for an HID lamp based on the application of a high frequency current square waveform through the lamp with the goal of avoiding acoustic resonances. The proposed ballast is fed from a 12 V DC input voltage and is intended to be used in systems supplied from nonconventional sources, such as back-up batteries, photovoltaic generators and automotive applications. In order to initiate the discharge in the lamp, a specially designed igniter supplied from the 12 V DC voltage is used to apply high voltage ignition peaks to the lamp. Experimental results obtained from a laboratory prototype for a 70 W metal halide lamp supplied at 30 kHz are also shown to evaluate the possibilities of the proposed topology
Keywords :
DC-AC power convertors; acoustic resonance; equivalent circuits; field effect transistor switches; invertors; lamp accessories; metal vapour lamps; power MOSFET; power semiconductor switches; switching circuits; 12 V; 30 kHz; 70 W; HID lamp electronic ballasts; acoustic resonance prevention; automotive applications; back-up batteries; circuit topology; discharge initiation; discharge lamp driver; high frequency square waveform; metal halide lamp; photovoltaic generators; Acoustic applications; Acoustic waves; Batteries; Driver circuits; Electronic ballasts; Frequency; High intensity discharge lamps; Photovoltaic systems; Resonance; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.912439
