高PF低THD有源LED驱动器与快速启动镇流器兼容

Proceedings of The 7th International Power Electronics and Motion Control Conference Pub Date : 2012-06-02 DOI:10.1109/IPEMC.2012.6258903

Inyong Yeo, Bo H. Choi, C. Rim, Changbyung Park

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引用次数: 0

摘要

提出了一种与传统快速启动镇流器兼容的高功率因数(PF)和低总谐波失真(THD)的新型有源LED驱动器。专用的LC补偿电路附加在镇流器上，以增加PF和降低源电流的THD。采用升压变换器调节LED电流，但为避免工作区域不稳定，对升压变换器的占空比进行了限定，并对其进行了分析和表征。一个小的直流输入电容用于防止镇流器瞬态电压和电流过大。高非线性镇流器有源LED驱动器的设计得到了大量实验的验证。

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Active LED driver of high PF and low THD compatible with rapid-start ballast

A new active LED driver with high power factor (PF) and low total harmonic distortion (THD) compatible with a conventional rapid-start ballast is proposed. A dedicated LC compensation circuit is attached to the ballast to increase the PF and lower the THD of the source current. A boost converter is used for regulating the LED current, however its duty cycle is bounded to avoid the unstable operating region, which is analyzed and characterized in this paper. A small DC input capacitor is used to prevent the ballast from an excessive transient voltage and current. The design of the active LED driver for the highly non-linear ballast is verified by extensive experiments.

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Proceedings of The 7th International Power Electronics and Motion Control Conference

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