Title :
Microcontrolled electronic gear for low wattage metal halide (MH) and high-pressure sodium (HPS) lamps
Author :
Có, Márcio A. ; Resende, Cassius Z. ; Simonetti, Domingos S L ; Vieira, J.L.F. ; Almeida, Paulo C A
Author_Institution :
Electr. Eng. Dept., Fed. Univ. of Espirito Santo, Brazil
Abstract :
This paper presents an electronic control gear for HID lamps that operates with a low frequency current inverter to drive the lamp, a DC-DC buck converter to control the current and the power of the lamp and a power factor pre-regulator based on discontinuous conduction mode boost converter. All signals of the power stages are provided by a dedicated microcontroller. An overview of the lamp operation phases and the strategies to avoid acoustic resonance are mentioned. A 70 W prototype without acoustic resonance and stroboscope effect was implemented. The approach can be easily extended for other rated power.
Keywords :
DC-DC power convertors; electric current control; invertors; lamp accessories; lighting control; metal vapour lamps; microcontrollers; power control; sodium; 220 V; 60 Hz; 70 W; DC-DC buck converter; HID lamps; acoustic resonance avoidance; current control; discontinuous conduction mode boost converter; high-pressure sodium lamps; lamp operation phases; low frequency current inverter; low wattage metal halide lamps; microcontrolled electronic gear; microcontroller; microprocessor control; power control; power factor pre-regulator; Buck converters; DC-DC power converters; Drives; Electrical ballasts; Frequency conversion; Gears; High intensity discharge lamps; Inverters; Reactive power; Resonance;
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
Print_ISBN :
0-7803-7420-7
DOI :
10.1109/IAS.2002.1043787
