电器与能效管理技术Issue(9)：52-56,5.DOI:10.16628/j.cnki.2095-8188.2017.09.010
半桥谐振型LED恒流驱动电源研究
Research on Constant-Current LED Driver Based on Half-Bridge Resonant Circuit
李俊 1林国庆 1林丽芗1
作者信息
- 1. 福州大学 电气工程与自动化学院,福建 福州 350108
- 折叠
摘要
Abstract
According to the characteristics of the LED load,this paper studied the constant-current LED driver based on half-bridge resonant converter,which realizes constant output current under different lamp voltage with open-loop control.The papeer deduced the expression of the output current of the resonant network with switch frequency and resonance parameters by first harmonic approximation method.It analyzing the constant current characteristics of the network and the influence of transformer's parameters on it,and a design method of circuit parameters was given.Finally,a 50 W laboratory prototype was built.The experimental results demonstrate the constant current characteristic of the converter,and it can realize the ZVS.关键词
LED驱动电源/恒流/谐振变换器/软开关Key words
LED driveing source/constant current/resonant converter/soft switching分类
信息技术与安全科学引用本文复制引用
李俊,林国庆,林丽芗..半桥谐振型LED恒流驱动电源研究[J].电器与能效管理技术,2017,(9):52-56,5.
