Voltage-frequency control dimming method for T5 fluorescent lamps

Author

Seidel, A.R. ; Bisogno, F.E. ; Alonso, J. Marcos ; Polonski, M. ; Schulz, V.H.

Author_Institution

GEDRE, Univ. Fed. de Santa Maria, Santa Maria, Brazil

fYear

2013

fDate

27-31 Oct. 2013

Firstpage

1189

Lastpage

1194

Abstract

This paper presents a dimmable electronic ballast for T5 fluorescent lamp. A modified dimming method is proposed based on variable DC bus and dedicated IR21592 IC. A combined method of dc link voltage control of resonant inverter, and a fixed phase angle of resonant inverter that is kept constant using the phase-locked loop (PLL) is employed. The electrodes heating is evaluated in order to guarantying the correct lifetime of T5 fluorescent lamp using Sum of Squares (SoS) method. Simulation, mathematical analysis, and experimental results with IR21592 IC were demonstrated for different operation conditions.

Keywords

electrodes; fluorescent lamps; frequency control; lamp accessories; mathematical analysis; phase locked loops; resonant invertors; voltage control; DC link voltage control; PLL; SoS method; T5 fluorescent lamp; dedicated IR21592 IC; dimmable electronic ballast; electrode heating evaluation; fixed angle; mathematical analysis; phase-locked loop; resonant inverter; sum of squares method; variable DC bus; voltage-frequency control dimming method; Electrodes; Electronic ballasts; Integrated circuits; Inverters; Phase locked loops; Radio frequency; Voltage control; control; electronic ballast; fluorescent lamps dimming; integrated circuit; power electronics; power factor correction;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Conference (COBEP), 2013 Brazilian

Conference_Location

Gramado

ISSN

2175-8603

Type

conf

DOI

10.1109/COBEP.2013.6785266

Filename

6785266