两个单级LED驱动器的比较研究:单一转换器与集成拓扑

2012 10th IEEE/IAS International Conference on Industry Applications Pub Date : 2012-11-01 DOI:10.1109/INDUSCON.2012.6453204

G. M. Soares, P. S. Almeida, D. P. Pinto, H. Braga

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引用次数: 7

摘要

这项工作提出了两种不同的LED驱动方法的比较，基于Ćuk转换器工作在不连续导通模式和集成SEPIC Buck-Boost转换器。对每个变换器进行了简要的分析，并提出了一种设计方法，重点是减少输出滤波电容，仍然在输出上实现可接受的电流纹波，并消除对电解电容器的需求。分析了LED在不同纹波条件下的光度性能，以帮助设计方法优化输出电流纹波选择和减小电容。给出了各变换器的控制策略，并进行了实验验证。从两个原型中获得了两个转换器的实验结果，从220 VAC-60 Hz市电馈电56系列相关的大功率led。

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A comparative study between two single-stage LED drivers: A sole converter versus an integrated topology

This work proposes a comparison between two different approaches for LED driving, based on the Ćuk converter operating in discontinuous conduction mode and an integrated SEPIC Buck-Boost converter. A brief analysis of each converter is carried out and a design methodology is presented, focused in reducing output filtering capacitance, still achieving acceptable current ripple on the output and eliminating the need for electrolytic capacitors. The LED photometric performance under different ripple conditions has been analyzed to aid the design methodology in order to optimize output current ripple selection and capacitor reduction. The control strategy for each converter was presented and validated experimentally. Experimental results were obtained for both converters from two prototypes feeding 56 series-associated high-power LEDs from 220 VAC-60 Hz mains.

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2012 10th IEEE/IAS International Conference on Industry Applications

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