Title :
Fluorescent Lamp Model based on Equivalent Resistances, Considering the Effects of Dimming Operation
Author :
Wakabayashi, Fabio T. ; Dantas, Fausto D. ; Pinto, João Onofre P ; Canesin, Carlos A.
Author_Institution :
Campus of Ilha Solteira, UNESP
Abstract :
This paper presents a new methodology for the determination of fluorescent lamp models based on equivalent resistances. One important feature of the proposed methodology is concerned with the inclusion of the filaments into the model, considering the effects of dimming operation on the equivalent resistances. The classical series-resonant parallel-loaded half-bridge inverter is used as the power stage of the ballast. Moreover, the variation of the inverter´s switching frequency is the dimming technique assumed for the analyses. Results obtained with a F32T8 lamp indicate that the accuracy of the model is very satisfactory. Thus, the lamp models obtained with the proposed methodology have the potential to serve as an important tool for ballast designers, considering the necessity for evaluating the lamp/ballast compatibility, according to issues concerned to the operating conditions of the electrodes´ filaments
Keywords :
bridge circuits; fluorescent lamps; lamp accessories; resonant invertors; switching convertors; F32T8 lamp; ballast designers; dimming operation; electrode filaments; equivalent resistances; fluorescent lamp model; inverter switching frequency; series-resonant parallel-loaded half-bridge inverter; Design optimization; Digital simulation; Electrical resistance measurement; Electrodes; Electronic ballasts; Fluorescent lamps; Inverters; Switching frequency; Temperature; Voltage;
Conference_Titel :
Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th
Conference_Location :
Recife
Print_ISBN :
0-7803-9033-4
DOI :
10.1109/PESC.2005.1581772