Title :
A novel two-stage electronic ballast for metal-halide-type HID lamps
Author :
Cheng, Chun-An ; Cheng, Yuan-Min
Author_Institution :
I-Shou Univ., Kaohsiung
fDate :
Oct. 30 2007-Nov. 2 2007
Abstract :
This paper presents a novel two-stage, high-power-factor electronic ballast for metal-halide (MH)-type high-intensity-discharge (HID) lamps. The ballast comprises of a boundary-conduction-mode (BCM)-operated buck-boost-flyback converter to achieve input current shaping and a half-bridge-type inverter to supply the lamp with low-frequency square-wave sources. The features of the proposed ballast are high power factor (>0.99), low total-harmonic-distortion (THD) of input ac-current, cost-effective and acoustic-resonance-free. Operational principles and experimental results of the proposed ballast for one 70-W MH-type HID lamp operating at 400 Hz switching frequency with HOV-rms input ac-voltage are presented.
Keywords :
discharge lamps; harmonic distortion; invertors; lamp accessories; power convertors; boundary-conduction-mode; buck-boost-flyback converter; half-bridge-type inverter; high-power-factor electronic ballast; input current shaping; low-frequency square-wave sources; metal-halide-type HID lamps; metal-halide-type high-intensity-discharge lamps; total-harmonic-distortion; two-stage electronic ballast; Bridge circuits; Buck converters; Electronic ballasts; Frequency; High intensity discharge lamps; IEC standards; Power factor correction; Pulse width modulation inverters; Resonance; Voltage; Acoustic resonance; Electronic ballast; High-intensity-discharge lamp;
Conference_Titel :
TENCON 2007 - 2007 IEEE Region 10 Conference
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-1272-3
Electronic_ISBN :
978-1-4244-1272-3
DOI :
10.1109/TENCON.2007.4429030
