Single-stage electronic ballast using single-coupled inductor
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- Title
- Single-stage electronic ballast using single-coupled inductor
- Authors
- Cho, YW; Kwon, BH
- Date Issued
- 2012-09
- Publisher
- KOREAN INST POWER ELECTRONICS
- 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.
- Keywords
- Coupled inductor; Power-factor-correction; Self-oscillating class-D inverter; HIGH-POWER-FACTOR; TOPOLOGY
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16030
- DOI
- 10.6113/JPE.2012.12.5.699
- ISSN
- 1598-2092
- Article Type
- Article
- Citation
- Journal of Power Electronics, vol. 12, no. 5, page. 699 - 707, 2012-09
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