Single Stage Switched Capacitor LED Driver with High Power Factor and Reduced Current Ripple

被引：0

作者：

Eloi, Esio ^{[1
]}

Sa, Edilson Mineiro, Jr. ^{[2
]}

dos Santos, Rodrigo Linhares ^{[2
]}

Miranda, Pedro A. ^{[3
]}

Antunes, Fernando L. M. ^{[1
]}

机构：

[1] Univ Fed Ceara, Dept Elect Engn, Fortaleza, Ceara, Brazil

[2] Fed Inst Ceara, Dept Ind Processes & Control, Sobral, CE, Brazil

[3] Fed Inst Ceara, Dept Ind Processes & Control, Sobral, CE, Brazil

来源：

2015 THIRTIETH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2015) | 2015年

关键词：

high power factor; LED driver; switched capacitor;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

This paper presents a switched capacitor-based converter to drive high power light emitting diodes (LEDs). Unlike the traditional switched capacitor based one, the proposed converter uses an inductor to avoid the forced charging and discharging operation reducing stress current in circuit. The proposed converter provides inherent power factor correction (PFC) and the switched capacitors are used as isolation capacitors. The proposed converter also uses a LC filter to reduce the output current ripple through LED array instead using a bulk electrolytic capacitor. The basic description of the topology is presented and a laboratory prototype of 48 W has been implemented. The experimental results presented demonstrate the technical feasibility of the proposed converter applied as LED driver.

引用

页码：906 / 912

页数：7

共 28 条

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