Title :
A new dimmable 70 W electronic ballast for high pressure sodium lamps
Author :
Cavalcante, Fabiana Da Silveira ; Brbi, I.
Author_Institution :
Power Electron. Syst. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland
Abstract :
This paper introduces a dimmable electronic ballast for HPS lamps which uses a new strategy to implement the variation of the lamp´s power, based on the variation of the switches´ duty cycle. The complete operating principle, theoretical analysis and relevant equations are presented in this paper. The experimental results of a 70 W electronic ballast operating at 33 kHz switching frequency are also presented.
Keywords :
bridge circuits; invertors; lamp accessories; lighting control; metal vapour lamps; sodium; switching circuits; 280 V; 33 kHz; 70 W; dimmable electronic ballast; duty-cycle variation; half-bridge inverter topology; high pressure sodium lamps; switching frequency; Circuit topology; Diodes; Electronic ballasts; Equations; Inductors; Inverters; Lamps; Power electronics; Switches; Voltage;
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.2002.1043786
