A TRIAC-Dimmable LED Lamp Driver with Wide Dimming Range

被引：0
|
作者：
Zhang, Ruihong [1 ]
Chung, Henry Shu-Hung [1 ]
机构：
[1] City Univ Hong Kong, Ctr Smart Energy Convers & Utilizat Res, Kowloon, Hong Kong, Peoples R China
来源：
2013 TWENTY-EIGHTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2013) | 2013年
关键词：
CONTROL SCHEME;
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：
A TRIAC-dimmable LED lamp driver allowing wide dimming range is proposed. The concept is based on introducing reactive power flow to increase the input current higher than the holding current of the TRIAC, while the input active power is regulated. A LED prototype has been built and tested. Experimental results reveal that the true firing angle of the TRIAC can be adjusted down to 172 degrees, and the lamp power can be dimmed from 7.2W to 0.3W linearly.
引用
收藏
页码：840 / 847
页数：8
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