A Single-Stage LED Driver Based on SEPIC and LLC Circuits

被引：50
|
作者：
Wang, Yijie [1 ]
Qi, Na [1 ]
Guan, Yueshi [1 ]
Cecati, Carlo [1 ]
Xu, Dianguo [1 ]
机构：
[1] Harbin Inst Technol, Sch Elect Engn & Automat, Harbin 150001, Peoples R China
来源：
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS | 2017年 / 64卷 / 07期
基金：
中国国家自然科学基金; 中国博士后科学基金;
关键词：
Lighting; LLC; power factor correction (PFC); single-ended primary-inductor converter (SEPIC); soft switching; ELECTRONIC BALLAST; DESIGN; CONVERTER;
D O I：
10.1109/TIE.2016.2613921
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
A single-stage light-emitting diode (LED) driver has been developed integrating a single-ended primary-inductor converter with a half-bridge LLC resonant converter. The proposed topology reduces system's cost, enhancing reliability. Because the LLC resonant part maintains soft-switching characteristics, switching losses are relatively low. Due to careful parameters selection, the system bus voltage can be kept low as needed in high-power LED drive designs. Some experiments using a 100-W prototype were performed to validate theoretical analysis. The obtained power factor was as high as 0.99, and due to soft-switching operations efficiency was up to 92% at full load.
引用
收藏
页码：5766 / 5776
页数：11
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