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Design of Electronic Ballast with Piezoelectric Transformer for Cold Cathode Fluorescent Lamps

To minimize the size of the electronic ballast, a half-bridge load- resonant inverter with a cascading Rosen-type piezoelectric transformer (PT) is designed for cold cathode fluorescent lamps (CCFLs). The electrical characteristics of the PT are investigated to obtain a higher voltage gain by adapting the load impedance to the interposed network. The circuit parameters are selected under the considerations of (1) the minimum inductor size, (2) the higher circuit efficiency, (3) the rated current of the PT, and (4) the stable lamp operation.
The electronic ballasts are designed for operating the lamp at the rated lamp power and with dimming control by asymmetrical pulse-width-modulation (APWM),respectively. Laboratory circuits are assembled and, experimental tests are carried out to validate the theoretical analyse

Identiferoai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0610102-110006
Date10 June 2002
CreatorsHsieh, Hsien-Kun
ContributorsTsorng-Juu Liang, Chih-Chiang Hua, Jiann-Fun Chen, Jia-You Lee, Chin-Sien Moo
PublisherNSYSU
Source SetsNSYSU Electronic Thesis and Dissertation Archive
LanguageCholon
Detected LanguageEnglish
Typetext
Formatapplication/pdf
Sourcehttp://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0610102-110006
Rightscampus_withheld, Copyright information available at source archive

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