Electronic ballast for fluorescent lamps

Author

Kazimierczuk, Marian K. ; Szaraniec, Wojciech

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

Volume

8

Issue

4

fYear

1993

fDate

10/1/1993 12:00:00 AM

Firstpage

386

Lastpage

395

Abstract

A frequency-domain analysis is given for a Class D voltage-switching power inverter with a load resistance connected in parallel with a resonant capacitor. Using the fundamental component approximation, design equations are derived to provide easy-to-use design tools. The inverter is inherently short-circuit-proof, but cannot operate safely with an open circuit at the resonant frequency. Safe operation with an open circuit can be achieved if the operating frequency is sufficiently lower or higher than the resonant frequency. Experimental results are given for two F40 fluorescent lamps connected in series, using MTP5N40 MOSFETs. The operating frequency was 50 kHz at full power and 70 kHz at 20% of full power. At full power, the efficiency of the Class D inverter was 95.6% and the efficiency of the power factor corrector was 93%. The overall efficiency of the ballast was 89.4% at full power

Keywords

fluorescent lamps; frequency-domain analysis; insulated gate field effect transistors; invertors; lamp accessories; switching circuits; 50 kHz; 70 kHz; 89.4 percent; 93 percent; 95.6 percent; Class D voltage-switching power inverter; F40 fluorescent lamps; MTP5N40 MOSFET; electronic ballast; fluorescent lamps; frequency-domain analysis; full power operation; fundamental component approximation; load resistance; operating frequency; power factor corrector; resonant capacitor; safe operation; short-circuit-proof inverter; Capacitors; Electronic ballasts; Equations; Fluorescent lamps; Frequency domain analysis; Inverters; RLC circuits; Resonance; Resonant frequency; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.261008

Filename

261008