Title :
Pulse Modulated High-Pressure-Sodium Arc
Author :
Vilela, João A., Jr. ; Perin, Arnaldo J.
Author_Institution :
Power Electron. Inst., Fed. Univ. of Santa Catarina, Florianopolis
Abstract :
This paper presents the current stabilization technique for driving a HPS lamp at a pulsed high frequency without serially connected passive elements. The current is stabilized through the thermal inertia of the lamp plasma. 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
Keywords :
arc lamps; bridge circuits; passive networks; power convertors; pulse modulation; stability; color rendering index; color temperature correlation; current stabilization technique; full-bridge converter; lamp plasma; passive elements; pulse modulation high-pressure-sodium arcs; thermal inertia; Conductivity; Current control; Frequency; Lamps; Plasma density; Plasma temperature; Pulse modulation; Pulsed power supplies; Switches; 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.2005.1581827
