全彩LED显示屏的节能化设计

全彩色LED大屏幕是一个高能耗的产品。针对LED显示屏的节能问题,对LED显示屏供电系统、供电电源以及控制方法进行了研究及优化,提出了＂LLC谐振＋同步整流的集中-分布式＂电源方案和针对不同LED二极管的＂分类供电＂模式。同时将采用上述方案设计的LED屏供电系统与一般的供电系统进行了对比和计算,得出的结论是：采用本文提出的新型电源方案相对于传统方法,可以节能约20%;若采用文中提出的新型LED供电模式,还将进一步节约15%的能量。因此该显示屏的节能化设计具有重要的社会效益和经济效益。

Energy-saving design for full color LED display screen

Full color LED big screen is a highly energy-consuming product. Deals with the energy saving problem of LED screen, studies and optimizes LED power supply system as well as its control method. It gives a ＂LLC resonance ＋ synchronous rectification integrated and distributed＂ power scheme and a ＂classified power supply mode＂ for different LED diodes. Meanwhile, this paper compares the LED power supply system which is designed according to the above scheme with ordinary power supply system, and after computing, draws the conclusion： the new power supply scheme this paper offers can save about 20% energy, compared with ordinary ones; besides, if using the new LED power supply mode this paper gives, 15% more additional energy can be saved. Therefore, energy-saving design for LED display screen has significant social and economic benefits.