Setting the preheating and steady-state operation of electronic ballasts, considering electrodes of hot-cathode fluorescent lamps
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Data
2007-05-01
Autores
Wakabayashi, Fabio Toshiaki
Gomes de Brito, Moacyr Aureliano
Ferreira, Castellane Silva
Canesin, Carlos Alberto
Título da Revista
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Editor
Institute of Electrical and Electronics Engineers (IEEE)
Resumo
This paper presents a new methodology for the adjustment of the preheating process and steady-state operation of electronic ballasts intended for hot-cathode fluorescent lamps. The classical series-resonant parallel-loaded half-bridge inverter is the power stage analyzed in this paper. In addition, the preheating process is based on the imposition of a constant rms current through the electrodes, in order to provide a proper value of the R-h/R-c ratio before the lamp start. According to the proposed methodology, it is possible to set suitable operating points for, the electronic ballast, considering optimal conditions for the lamps electrodes. Therefore, the proposed methodology for setting the preheating and steady-state operation is a complete platform to the design of electronic ballasts for hot-cathode fluorescent lamps.
Descrição
Palavras-chave
electrodes filaments, electronic ballasts, fluorescent lamp model, preheating process, R-h/R-c ratio
Como citar
IEEE Transactions on Power Electronics. Piscataway: IEEE-Inst Electrical Electronics Engineers Inc., v. 22, n. 3, p. 899-911, 2007.