Single Stage High Power Factor Electronic Ballast for HID Lamps Using Differential Connection

This paper presents an electronic ballast topology for HID lamps using differential connection of DC/DC converters. The integration of power factor correction, lamp power control and inverter stages results in a single-stage electronic ballast that supplies the lamp with a low frequency symmetrical...

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Bibliographic Details
Main Authors: Cervi, M., Marchesan, T.B., Alvarez, J.M.A., do Prado, R.N.
Format: Conference Proceeding
Language:English
Subjects:
Acoustic waves
Circuit topology
DC-DC power converters
Electronic ballasts
Frequency
High intensity discharge lamps
Inverters
Power control
Power factor correction
Reactive power
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Description
Summary:This paper presents an electronic ballast topology for HID lamps using differential connection of DC/DC converters. The integration of power factor correction, lamp power control and inverter stages results in a single-stage electronic ballast that supplies the lamp with a low frequency symmetrical square voltage waveform, which avoids both the acoustic resonance phenomenon excitation and the lamp restarting. The ballast consists of a buckboost power factor correction converter and two bidirectional flyback converters connected to the lamp in a differential way. These converters are combined using only two switches that share the same source reference, thus resulting in a simple control circuit.
ISSN:0197-2618
2576-702X
DOI:10.1109/IAS.2009.5324799