LCL-T resonant network-based modular multi-channel constant-current LED driver analysis and design

被引：0
|
作者：
Qingqing He
Quanming Luo
Jian Huang
Chi Cao
Pengju Sun
Xiong Du
机构：
[1] Chongqing University,State Key Laboratory of Power Transmission Equipment and System Security and New Technology
来源：
Journal of Power Electronics | 2020年 / 20卷
关键词：
LED driver; AC square voltage bus; Parameter design; Multi-channel constant current;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Multiple output LED drivers are necessary to achieve better performance and higher reliability in street lighting, tunnel lighting and LCD background lighting applications. Based on LCL-T constant-current characteristics, a modular multiple output LED driver is proposed in this paper. The LCL-T rectifiers are connected to the same voltage bus and work like current sources. However, since there are much higher voltage harmonics in the AC square bus voltage, it is very important to quantitatively analyze how these harmonics influence the precision of the output currents. In addition, all of the switches can achieve Zero Voltage Switching (ZVS) by proper design of the LCL-T network. Finally, a 200-W prototype with five channels is established with an efficiency of 92.25%.
引用
收藏
页码：1616 / 1628
页数：12
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