摘要
新型光源要符合以下四个条件:高效、节能、无污染及模拟自然光,发光二极管(LED)就具有这样的优点。采用脉动电流驱动大功率LED可以去除驱动电源中的电解电容,大大提高驱动电源的寿命。但是LED中存在两倍工频的频闪。本文在此基础上,提出一种无电解电容、无频闪的新型LED驱动电源,既去除了电解电容,提高了LED驱动电源的使用寿命,又解决了脉动电流驱动带来的LED频闪的问题。
New light source needs to meet the following four features： efficient,energy saving,no pollution,simulated natural light.LED meets all the needs.Driving high power LEDs with pulsating current can greatly increase the lifetime of LED driver due to removing the electrolytic capacitor.But this brings the problem of flicker of twice the line frequency.A novel electrolytic-less and no flicker LED driver is proposed on the base.And this not only makes the LED driver with long lifetime,but also solves the problem of flicker with pulsating current.
出处
《电工技术学报》
EI
CSCD
北大核心
2012年第4期173-178,共6页
Transactions of China Electrotechnical Society
基金
光宝电子(东莞)有限公司资助项目
关键词
发光二极管
功率因数校正
频闪
驱动电路
Lighting emitting diode
power factor correction
flicker
driver
