Wakabayashi, Fabio Toshiaki [UNESP]Canesin, Carlos Alberto [UNESP]2014-05-272014-05-272004-11-29PESC Record - IEEE Annual Power Electronics Specialists Conference, v. 5, p. 4043-4049.0275-9306http://hdl.handle.net/11449/67953An electronic ballast for multiple tubular fluorescent lamps is presented in this paper. The proposed structure features high power-factor, dimming capability, and soft-switching to the semiconductor devices operated in high frequencies. A Zero-Current-Switching - Pulse-Width-Modulated (ZCS-PWM) SEPIC converter composes the rectifying stage, controlled by the instantaneous average input current technique, performing soft-commutations and high input power factor. Regarding the inverting stage, it is composed by a classical resonant Half-Bridge converter, associated to Series Parallel-Loaded Resonant (SPLR) filters. The dimming control technique employed in this Half-Bridge inverter is based on the phase-shift in the current processed through the sets of filter + lamp. In addition, experimental results are shown in order to validate the developed analysis.4043-4049engElectronic ballastsHigh power factor (HPF)PreregulatorsTotal harmonic distortion (THD)DiodesElectric currentsElectric potentialElectric rectifiersIgnitionIntegrated circuitsNatural frequenciesPhase shiftSemiconductor devicesSwitchingFluorescent lampsTrabalho apresentado em evento10.1109/PESC.2004.1355191WOS:000224587600667Acesso aberto2-s2.0-87442233516427185658143370