A 250 W high pressure sodium lamp high power factor electronic ballast using an ac chopper

A novel high pressure sodium lamp (HPS) electronic ballast topology with high power factor (HPF) is presented. Instead of using a power factor correction (PFC) stage, an ac chopper is capable of achieving a HPF and of supplying high frequency current to the lamp. Due to its output characteristic the...

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Bibliographic Details
Published in2005 European Conference on Power Electronics and Applications pp. 9 pp. - P.10
Main Authors Sincero, G.C.R., Franciosi, A.S., Perin, A.J.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2005
Subjects
AC/AC converter
Choppers
Circuit topology
Current supplies
electronic ballast modulation strategy
Electronic ballasts
Frequency modulation
Lamps
Power factor correction
Reactive power
soft switching
Switching converters
Voltage
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Summary:A novel high pressure sodium lamp (HPS) electronic ballast topology with high power factor (HPF) is presented. Instead of using a power factor correction (PFC) stage, an ac chopper is capable of achieving a HPF and of supplying high frequency current to the lamp. Due to its output characteristic the lamp current presents a low frequency modulation at the voltage source frequency and the consequences of this operation are discussed. Afterwards, different converter topologies, bi-directional switches and modulation strategies for the ac-ac converter are presented. Finally, experimental results of a prototype for 250 W HPS lamps are discussed
ISBN:9075815093
9789075815092
DOI:10.1109/EPE.2005.219295