电工技术学报2012，Vol.27Issue(12)：79-86,93,9.
无电解电容的高功率因数AC-DC LED驱动器
High Power Factor AC-DC LED Drivers Without Electrolytic Capcitors
摘要
Abstract
High-brightness light-emitting diode is a promising new generation of green lighting source with the advantages of high efficiency,good optical performance,long lifetime,and environmentally friendly.The lifetime of the LED driver is the bottleneck of the whole system,which limits the LED luminaries' lifetime.Combined with the requirement of the driving current,a LED driver which is driven by the proposed pulsating current is presented.This method can decrease the power ripple in the bus capacitor.Through theoretical analysis,the volume of the bus capacitor can be decreased to 52.7%,while the bus voltage ripple remains same and the input power is high.A prototype of a 50W LED driver has been built and the experimental results are presented.关键词
LED驱动器/长寿命/高功率因数/无电解电容Key words
LED driver/long life/high power factor/without electrolytic capacitors分类
信息技术与安全科学引用本文复制引用
倪建军,张方华,俞忆洁..无电解电容的高功率因数AC-DC LED驱动器[J].电工技术学报,2012,27(12):79-86,93,9.基金项目
国家自然科学基金 （）
江苏省自然科学基金（BK2010509）资助项目 （）
