一种单级图腾柱无桥交流发光二极管驱动电源 .pdfVIP

学兔兔 第51卷 第21期 电测与仪表 VoI．51 No．21 2014年 l1月10日 Electrical Measurement Instrumentation Nov．10。2014 一 种单级图腾柱无桥交流发光二极管驱动电源木 薛晓明 ，陈宏 (1．常州信息技术学院计算机分院，江苏常州I 213164；2．江苏财经技术学院电子工程系，江苏淮阴223003) 摘要：针对交流发光二极管(AC LED)直接与市电连接存在效率低、谐波含量高以及频闪的问题，提出一种交流 发光二极管(AC LED)驱动电源。提出的驱动电源采用单级图腾柱无桥结构，并辅之高频方波驱动策略，具有 使用元件少、控制简单的优点。理论分析和实验证明：提出的驱动电源在输人电压10％波动范围内，效率大于 90％，功率因素大于0．95，且无任何频闪。 关键词：交流发光二极管；单级无桥功率因素校正；驱动电源；图腾柱 中图分类号：TM76 文献标识码：B 文章编号：1001—1390(2014)21—0l15一O5 A Driving Power Supply for the ACLED Based on the Single——Stage Bridgeless Totem Pole XUE Xiao—ming ，CHEN Hong (1．Computer Branch College，Changzhou College of Information Technology，Changzhou 213164，Jiangsu，China 2．Department of Electrical Engineering，Jiangsu Vocational and Technical College of Finance Economics， ～ Huaiyin 223003，Jiangsu，China) Abstract：Alternating current light emitting diode(AC LED)works in declined efficiency and with hJ gh harmonic con- tent and flickers when it is directly linked with the commercial power．In view of these problems，this paFler put for- ward an AC LED driving power supply，which used fewer elements and could be easily controlled by adopting a bridgeless structure of single—stage totem poles and the driving strategy of high frequency square waves．Theoretical analyses and experiments have shown that within 10％ fluctuation of the input voltage．the AC LED with the proposed power supply works in the efficiency of more than 90％ ，with the power factor of above 0．95 and without any flickers． Key wor