Fuentes de alimentación eléctrica para el estudio y uso eficiente de lámparas excimer DBD
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Fecha
2014Autor(es)
Flórez Rubio, David MagínPublicador
Pontificia Universidad Javeriana
Facultad
Facultad de Ingeniería
Programa
Doctorado en Ingeniería
Título obtenido
Doctor en Ingeniería
Tipo
Tesis/Trabajo de grado - Monografía - Doctorado
COAR
Tesis de doctoradoCompartir este registro
Citación
Documentos PDF
Título en inglés
Power supplies for the study and efficient use of DBD excimer UV lampsResumen
Con el objetivo de proporcionar una fuente de alimentación para el estudio de las lámpras excimer de descarga de barrera dieléctrica (DBD), se ha diseñado e implementado un convertidor en modo de corriente que permite un ajuste preciso de la potencia inyectada en este tipo de lámparas.
Abstract
With the aim to provide a scientific tool for the enhancement of the Dielectric Barrier Discharge (DBD) Excimer Lamps (Excilamp) performance, a current-mode converter that allows an accurate adjustment of the electrical power injected into one of those lamps, is designed and implemented. With the proposed converter, the current supplied to the lamp has a square shape, controlled by means of three parameters: amplitude, duty cycle and frequency, which provides full control of the lamp electrical power. Implementation is made considering a step-up transformer interfacing the high-voltage lamp with the converter. Experiments demonstrate the operating principle of this converter, including UV power measurements for a DBD XeCl Excilamp. The capabilities of the converter are used to analyze the lamp behavior under different combinations of these three parameters, illustrating its capabilities for finding the optimal operating point. Then a series-resonant inverter for the supply of DBD) excilamp is proposed. In order to effectively control the lamp power, the operating mode of this converter combines discontinuous current-mode and soft-commutation (ZCS), obtaining as well low electromagnetic emissions, and reduced switching losses. The mathematical relationships obtained from state plane analysis, are validated with simulations and experimental results. Finally, several topologies of DBDs power supplies are compared analytical and experimentally to elucidate the advantages of each approach. After this work, one of the perspectives is the application of the square-shape supply in the performance study of other types of DBD excilamps and DBD reactors.
Palabras clave
Descarga con barrera dieléctrica (DBD)Fuente de corriente
Convertidor resonante
Ultravioleta (UV)
Lámpara excimer
Keywords
Dielectric barrier discharge (DBD)Current source
Resonant converter
Ultraviolet (UV)
Excimer lamp
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