Title :
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
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;
Conference_Titel :
Power Electronics Conference (COBEP), 2013 Brazilian
Conference_Location :
Gramado
DOI :
10.1109/COBEP.2013.6785266
