A Current Ripple Cancellation Circuit for Electrolytic Capacitor-less AC-DC LED Driver

被引：0

作者：

Lee, Kuan-Wen ^{[1
]}

Hsieh, Yi-Hsun ^{[1
]}

Liang, Tsorng-Juu ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Elect Engn, Adv Optoelect Technol Ctr AOTC, Green Energy Elect Res Ctr GREERC, Tainan 70101, Taiwan

来源：

2013 TWENTY-EIGHTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2013) | 2013年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a bidirectional buck-boost current ripple cancellation circuit applied to electrolytic capacitor-less flyback LED driver with power factor correction (PFC). By operating the flyback converter in discontinuous conduction mode (DCM), high power factor can be obtained under universal input voltage range. The bidirectional buck-boost converter can minimize the twice-line-frequency output current ripple using simple open-loop pulse width modulation (PWM) control without complex control scheme, and modularization is possible for other types of converter at the PFC stage. The output current ripple can be significantly reduced without using electrolytic capacitors (E-Cap) and the power factor is near unity under universal input voltage. Finally, a 700 mA / 20 W hardware prototype is built to verify the feasibility of the proposed method.

引用

页码：1058 / 1061

页数：4

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