DocumentCode :
2404295
Title :
Dynamic analysis of frequency-controlled electronic ballasts
Author :
Yin, Yan ; Zane, Regan ; Erickson, Robert ; Glaser, John
Author_Institution :
Colorado Power Electron. Center, Colorado Univ., Boulder, CO, USA
Volume :
1
fYear :
2002
fDate :
13-18 Oct. 2002
Firstpage :
685
Abstract :
This paper presents analytical tools aimed at improving and simplifying the development of frequency-controlled dimming electronic ballasts. A modified phasor transformation is proposed that converts a frequency-modulated signal into an equivalent time-varying phasor. The proposed transformation is applied to develop a complete small-signal phasor model of the LCC resonant ballast, which explicitly models the effect of the frequency modulation on the envelopes of the outputs. A Spice-compatible implementation of the model is presented that facilitates AC analysis of the ballast in addition to envelope transient simulation, and is verified through comparison of experimental and simulation results. A closed-form solution of the control-to-output current transfer function for the ballast-resistor system is presented, along with key observations of the pole locations and low-frequency gain that facilitate simple and intuitive compensator design. Finally a design example for the feedback controller is given to verify the theoretical analysis.
Keywords :
SPICE; compensation; feedback; frequency control; lamp accessories; lighting control; transfer functions; AC analysis; LCC resonant ballast; Spice-compatible implementation; ballast-resistor system; closed-form solution; compensator design; control-to-output current transfer function; dynamic analysis; envelope transient simulation; equivalent time-varying phasor; feedback controller; frequency modulation; frequency-controlled dimming electronic ballasts; frequency-modulated signal; low-frequency gain; modified phasor transformation; pole locations; small-signal phasor model; Adaptive control; Analytical models; Closed-form solution; Control systems; Electronic ballasts; Frequency conversion; Frequency modulation; Resonance; Transfer functions; Transient analysis;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Industry Applications Conference, 2002. 37th IAS Annual Meeting. Conference Record of the
Conference_Location :
Pittsburgh, PA, USA
ISSN :
0197-2618
Print_ISBN :
0-7803-7420-7
Type :
conf
DOI :
10.1109/IAS.2002.1044172
Filename :
1044172
Link To Document :
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