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Pulse operation of HPS lamps in high-frequency modulation
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| Author(s) |
VILELA JoãO; PERIN Arnaldo |
| Abstract |
This paper presents a control technique which permits supplying HPS lamps without using inductive, capacitive or resistive elements; the current through the lamp is established by the resistance of the plasma present inside the discharge tube. The lamp was supplied in a pulsating manner at high-frequency by means of peak current control in order to stabilize the plasma’s temperature and, consequently, its conductivity. The pulses modulated at low-frequency provide improved color rendering index and correlated color temperature for the light emitted by standard HPS lamps. The current stabilization technique was implemented using the Full-Bridge converter and experimental results demonstrate this technique. |
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| Filename: | 0408 |
| Filesize: | 262.4 KB |
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| Type |
Members Only |
| Date |
Last modified 2006-02-14 by System |
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