Title :
Designing dimmable electronic ballast with frequency control
Author :
Moo, Chin S. ; Cheng, Hung L. ; Chen, Horn N. ; Yen, Hau C.
Author_Institution :
Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan
Abstract :
This paper provides a guideline for designing a frequency controlled dimmable electronic ballast for the fluorescent lamp. The design equations are derived based on a power-dependent lamp model. The dimming characteristics of a fluorescent lamp by frequency control can be predicted by incorporating the lamp model into the electronic ballast. The circuit parameters are designed by considering both the starting voltage and the filament power during the dimming operation. An electronic ballast with the half-bridge series-resonant parallel-load inverter is used as an example for illustrating the design procedure. The calculated results are verified by experimental tests on a laboratory prototype circuit
Keywords :
bridge circuits; equivalent circuits; fluorescent lamps; frequency control; invertors; lamp accessories; lighting control; resonant power convertors; circuit parameters; design equations; design procedure; dimmable electronic ballast design; dimming characteristics; equivalent circuit; filament power; fluorescent lamp; frequency control; half-bridge series-resonant parallel-load inverter; power-dependent lamp model; starting voltage; Circuit testing; Electronic ballasts; Equations; Fluorescent lamps; Frequency control; Guidelines; Inverters; Laboratories; Predictive models; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1999. APEC '99. Fourteenth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-5160-6
DOI :
10.1109/APEC.1999.750441
