A new control scheme of Class-E electronic ballast with low crest factor

Author

Chon, Hyun-Son ; Lee, Dong-Yun ; Hyun, Dong-seok

Author_Institution

Dept. of Electr. Eng., Hanyang Univ., Seoul, South Korea

Volume

1

fYear

2003

fDate

12-16 Oct. 2003

Firstpage

531

Abstract

In this paper, a new control scheme of Class-E inverter for reducing the crest factor of electronic ballasts for fluorescent lamps using pulse-frequency-modulation (PFM) is introduced. The lifetime of the lamps is guaranteed by decreasing the lamp crest factor and also voltage stress of the switch is significantly decreased by a new scheme although conventional Class-E inverter is used in this paper. The proposed PFM control scheme doesn´t used any auxiliary circuit. The proposed control strategy is executed by feeding back the input voltage, and the zero-voltage-switching (ZVS) is ensured by operating beyond resonant frequency. Therefore, the control principles of the proposed method are explained in detail and its validity is verified through several simulation and experimental results.

Keywords

fluorescent lamps; frequency control; invertors; lamp accessories; pulse frequency modulation; switching convertors; Class-E electronic ballast; Class-E inverter; ZVS; auxiliary circuit; control scheme; fluorescent lamps; lamps lifetime; low crest factor; pulse-frequency-modulation; resonant frequency; switching frequency control; voltage stress; zero-voltage-switching; Circuits; Costs; Electric variables control; Electronic ballasts; Fluorescent lamps; Frequency; Inverters; Stress; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 2003. 38th IAS Annual Meeting. Conference Record of the

Print_ISBN

0-7803-7883-0

Type

conf

DOI

10.1109/IAS.2003.1257551

Filename

1257551