Single-Stage High-Power-Factor Electronic Ballast with a Symmetrical Class-DE Resonant Rectifier

Chainarin Ekkaravarodome; Kamon Jirasereeamornkul

Single-Stage High-Power-Factor Electronic Ballast with a Symmetrical Class-DE Resonant Rectifier

Chainarin Ekkaravarodome

Kamon Jirasereeamornkul

Vol. 12, No. 3, pp. 429-438, May 2012

10.6113/JPE.2012.12.3.429

Class-DE resonant rectifier

Electronic ballast

Power-factor correction

Single-stage

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Abstract

This paper presents the use of a novel, single-stage high-power-factor electronic ballast with a symmetrical class-DE low-dυ/dt resonant rectifier as a power-factor corrector for fluorescent lamps. The power-factor correction is achieved by using a bridge rectifier to utilize the function of a symmetrical class-DE resonant rectifier. By employing this topology, the peak and ripple values of the input current are reduced, allowing for a reduced filter inductor volume of the EMI filter. Since the conduction angle of the bridge rectifier diode current was increased, a low-line current harmonic and a power factor near unity can be obtained. A prototype ballast, operating at an 84-kHz fixed frequency and a 220-Vrms, 50-Hz line input voltage, was utilized to drive a T8-36W fluorescent lamp. Experimental results are presented which verify the theoretical analysis.

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Cite this article

[IEEE Style]

C. Ekkaravarodome and K. Jirasereeamornkul, "Single-Stage High-Power-Factor Electronic Ballast with a Symmetrical Class-DE Resonant Rectifier," Journal of Power Electronics, vol. 12, no. 3, pp. 429-438, 2012. DOI: 10.6113/JPE.2012.12.3.429.

[ACM Style]

Chainarin Ekkaravarodome and Kamon Jirasereeamornkul. 2012. Single-Stage High-Power-Factor Electronic Ballast with a Symmetrical Class-DE Resonant Rectifier. Journal of Power Electronics, 12, 3, (2012), 429-438. DOI: 10.6113/JPE.2012.12.3.429.