Electronic Driver without Electrolytic Capacitor for Dimming High Brightness LEDs

被引：33

作者：

Garcia, J. ^{[1
]}

Calleja, A. J. ^{[1
]}

Corominas, E. L. ^{[1
]}

Gacio, D. ^{[1
]}

Ribas, J. ^{[1
]}

机构：

[1] Univ Oviedo, Dept Elect Engn, EEC IEL Res Grp, Asturias, Spain

来源：

IECON: 2009 35TH ANNUAL CONFERENCE OF IEEE INDUSTRIAL ELECTRONICS, VOLS 1-6 | 2009年

关键词：

High Brightness LEDs; Electronic Light Dimming; Electrolytic Capacitor Avoidance; System modeling and control; SYSTEM;

D O I：

10.1109/IECON.2009.5415167

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 full ballast for driving an assembly of High Brightness LEDs, based on a new de to dc converter. The converter provides a constant current waveform to the load parting from a DC bus voltage. The converter, operating with a peak current control, keeps the current through the LEDs constant independently of the bus voltage. This is carried out internally by self-adjusting the switching frequency of the converter. Thus, the requirements of the capacitance of the bus capacitor are greatly diminished, allowing the avoidance of electrolytic technology. Also, low frequency PWM dimming can he carried out easily. The present work shows the design procedure and the experimental results obtained after building a prototype of a full ballast for HB LEDs.

引用

页码：3342 / +

页数：2

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