New soft-switching inverter for high efficiency electronic ballast with simple structure

E. C. NHO Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, P.O. Box 150, Chongryang, Seoul, 130-650, South Korea

K. H. JEE Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, P.O. Box 150, Chongryang, Seoul, 130-650, South Korea

G. H. CHO Department of Electrical Engineering, Korea Advanced Institute of Science and Technology, P.O. Box 150, Chongryang, Seoul, 130-650, South Korea

Abstract

A new electronic ballast is proposed for a fluorescent lamp using a high frequency inverter having zero-voltage and zero-current mixed switching poles to regulate the fluorescent lamp light power for high efficiency and long lamp life. The inverter circuit satisfies almost all of the requirements for starting, dimming and high light-output operation of the fluorescent lamp with a simpler scheme compared with the conventional electronic ballasts. Simulations and experiments are carried out for a FL40 fluorescent lamp drive using a 20 kHz operating frequency.

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New soft-switching inverter for high efficiency electronic ballast with simple structure

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New soft-switching inverter for high efficiency electronic ballast with simple structure

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