Energy-recycle Interface Circuit for LED Matrix Driving Under Maximum-efficiency Operation Point Locating Control

被引：0
|
作者：
Chen Y. [1 ]
Xue J. [1 ]
Shi Z. [1 ]
机构：
[1] College of Information Engineering, Zhejiang University of Technology, Hangzhou, 310023, Zhejiang Province
来源：
| 2018年 / Chinese Society for Electrical Engineering卷 / 38期
关键词：
Energy recycle; Interface circuit; LED driving; LED matrix; Maximum-efficiency operation point locating;
D O I：
10.13334/j.0258-8013.pcsee.162179
中图分类号：
学科分类号：
摘要：
Prior to the original current-sharing interface circuits, energy-recycle interface circuits for LED matrix driving can successfully deal with the cases of large voltage differences between input and output. For this reason, their load ranges can extend to the limits of short circuit (SC) and open circuit (OC). In order to achieve high efficiencies all over the load range, a maximum-efficiency operation point locating control method is proposed, which can make an energy-recycle interface circuit for LED matrix driving automatically find a nearly maximum-efficiency state and finally operate at that steady state. The experimental results show that a single-channel prototype of the energy-recycle interface circuit for LED matrix driving under the proposed control could achieve both nearly maximum efficiencies in the normal-load cases and nearly minimum losses in the fault-load cases with high probabilities. © 2018 Chin. Soc. for Elec. Eng.
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页码：870 / 878
页数：8
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