无线LED照明驱动系统方案设计  

Drive system design of wireless LED lighting

作　　者：唐嘉铭 郑阳 李晖[1] 李志芳[1] 

机构地区：[1]福建师范大学光电与信息工程学院,福建福州350007 [2]University of Florida,gainesvillefl32611

出　　处：《电子设计工程》2014年第15期105-108,共4页Electronic Design Engineering

基　　金：国家自然科学基金(61178089;81201124);福建省科技厅重点项目(2011Y0019)

摘　　要：本文主要提出以电磁耦合与电磁共振的方式,为LED提供无线驱动电能。采用高精度的正激变换恒流源驱动LED,并利用光电池进行光照强度采集反馈调整恒流源电流以控制LED发光强度,保证光照恒定。此外该系统还在电网输入端增加有源电力滤波器(Active Power Filter,APF),以减少该装置作为非线性负载而引入电网的高次谐波。本文所述方案能有效地提高LED照明分布的灵活性,解决电力线布线的繁琐,同时在高效管理光照能耗的情况下不影响电网电能质量,因此其具有深厚的实用价值和应用潜力。This paper mainly introduces a LED drive system with wireless power supply in electromagnet coupling or electromagnetic resonance mode. The high-precision current source is adopted to drive LED （s） whose luminous intensity is controlled by source current according to light intensity feedback via photocell, so as to ensure stable illumination. What’s more, the system also increases active power filter （APF） beside grid input, which may prevent harmonics produced by this nonlinear device from injecting electric network. The program presented can effectively improve the flexibility of LED lighting distribution, and solve the trouble of cable wiring. It may provide efficient management of light energy without affecting power quality of the grid. So that it has profound practical value and application potential.

关 键 词：无线供电 高精度恒流源 谐波补偿 LED照明 

分 类 号：TN702[电子电信—电路与系统]