Low-Voltage Electronic Ballast Based on Class E Oscillator

Author

Krizhanovski, Vladimir G. ; Chernov, Dmitrii V. ; Kazimierczuk, Marian K.

Author_Institution

Radiophys. Dept., Donetsk Nat. Univ.

Volume

22

Issue

3

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

863

Lastpage

870

Abstract

In this paper, an electronic ballast based on the class E oscillator with a capacitive impedance inverter is presented. The ballast allows us to supply an instant-start fluorescent lamp from a 12-V dc power source. The class E oscillator allows us to increase efficiency using a simple structure with only one switch without a driving circuit. Due to the anti-parallel diode integrated into switch, the zero voltage switching conditions are fulfilled in the ignition mode, maintaining high efficiency. One of the applications of the ballast is in mobile equipment, where compact independent power sources are used, for example, batteries or solar cells. The ballast was designed with the following parameters: V_DD= 12V, P_o= 18W, f_o= 440kHz. The measured efficiency was 83%, the output power was 18.5W, and the dc power was 22.3W at the operating frequency of 444.44kHz

Keywords

design engineering; fluorescent lamps; invertors; lamp accessories; switching convertors; zero voltage switching; 12 V; 18 W; 18.5 W; 22.3 W; 440 kHz; 444.44 kHz; 83 percent; capacitive impedance inverter; class E oscillator; instant-start fluorescent lamp; low-voltage electronic ballast; zero voltage switching conditions; Diodes; Electronic ballasts; Fluorescent lamps; Ignition; Impedance; Inverters; Oscillators; Switches; Switching circuits; Zero voltage switching; Class-E oscillator; electronic ballast; fluorescent lamps; high efficiency; self-oscillation; switching-mode operation; zero-voltage switching (ZVS);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2007.896512

Filename

4182465