Voltage-frequency control dimming method for T5 fluorescent lamps

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

Power Electronics Conference（2013）

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摘要

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.

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关键词

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,phase-locked loop,resonant inverter,sum of squares method,variable dc bus,voltage-frequency control dimming method,control,electronic ballast,fluorescent lamps dimming,integrated circuit,power electronics,power factor correction

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