Non-electrolytic capacitor LED driver with feedforward control

In this paper, the design and implementation of a non-electrolytic capacitor LED driver is proposed. The proposed driver includes a Boost PFC converter as first-stage and a LLC Resonant Converter as second-stage. With feedforward control, the output current ripple can be reduced without electrolytic...

Full description

Saved in:
Bibliographic Details
Published in2015 IEEE Energy Conversion Congress and Exposition (ECCE) pp. 3223 - 3230
Main Authors Yi-Chien Shen, Tsorng-Juu Liang, Wei-Jing Tseng, Huan Hao Chang, Kai-Hui Chen, Yi-Ju Lu, Jhih-Sian Li
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.09.2015
Subjects
Capacitors
Control systems
Feed-forward control
LED driver
Light emitting diodes
Non electrolytic capacitor
Power generation
Reactive power
Switching frequency
Voltage control
Online AccessGet full text

Cover

More Information
Summary:In this paper, the design and implementation of a non-electrolytic capacitor LED driver is proposed. The proposed driver includes a Boost PFC converter as first-stage and a LLC Resonant Converter as second-stage. With feedforward control, the output current ripple can be reduced without electrolytic capacitor, the lifetime of the driver will be increased. In this paper, the operating principles of the LLC resonant Converter with feed-forward control will be discussed. Besides, the optimized design of the proposed control scheme will be discussed, too. Finally, a two-stage non electrolytic capacitor LED driver is implemented to drive 150 W LED load. Experimental results show that the proposed circuit can be operated at 90~264V rms AC input voltage range and the highest efficiency is 90.4 %. The output current ripple and LED efficacy will be also verified.
ISSN:2329-3721
2329-3748
DOI:10.1109/ECCE.2015.7310113