Single-Stage Half-Bridge Electronic Ballast Using a Single Coupled Inductor

Yong-Won Cho; Bong-Hwan Kwon

Single-Stage Half-Bridge Electronic Ballast Using a Single Coupled Inductor

Yong-Won Cho

Bong-Hwan Kwon

Vol. 12, No. 5, pp. 699-707, Sep. 2012

10.6113/JPE.2012.12.5.699

Coupled inductor

Power-factor-correction

Self-oscillating class-D inverter

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Abstract

This paper proposes a single-stage half-bridge electronic ballast with a high power factor using only a single coupled inductor. Compared to conventional high power factor electronic ballasts, the proposed ballast is a simpler circuit with a low cost and a high reliability. The proposed ballast is made up of a power-factor-correction (PFC) circuit and a self-oscillating class-D inverter. The PFC and inverter stages of the proposed ballast are simplified by sharing only a single coupled inductor and two common switches. The proposed PFC circuit can achieve a high power factor and low voltage stresses of the switches. A saturable transformer in the self-oscillating class-D inverter determines the switching frequency of the ballast. Experimental results obtained on a 30W fluorescent lamp are discussed.

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Cite this article

[IEEE Style]

Y. Cho and B. Kwon, "Single-Stage Half-Bridge Electronic Ballast Using a Single Coupled Inductor," Journal of Power Electronics, vol. 12, no. 5, pp. 699-707, 2012. DOI: 10.6113/JPE.2012.12.5.699.

[ACM Style]

Yong-Won Cho and Bong-Hwan Kwon. 2012. Single-Stage Half-Bridge Electronic Ballast Using a Single Coupled Inductor. Journal of Power Electronics, 12, 5, (2012), 699-707. DOI: 10.6113/JPE.2012.12.5.699.