摘要
传统的发光二极管(LED)驱动电源普遍采用电解电容作为储能元件,其相对较短的寿命成为制约LED驱动电源寿命的重要因素。为此,提出采用一种新型的电流型五电平DC-DC电路来搭建LED驱动电源。不仅去除了电解电容,延长了LED驱动电源的使用寿命,还能实现高输入功率因数和恒流驱动LED负载。详细分析了这种LED驱动电源的工作原理以及多电平PWM调制技术。最后基于PSIM仿真环境搭建系统模型,仿真结果验证了LED驱动电源拓扑的可行性。
Electrolytic capacitance is commonly used as energy storage component in traditional LED drive power supply. The relatively shortter life is an important restricting factor to the life of LED drive power supply. Therefore,a new type of current five-level DC-DC circuit was proposed to build LED drive power. Not only the electrolytic capacitance was removed,but also the service life of LED drive power was extended,and high input power factor and constant current drive LED load could be realized. The working principle of this kind of LED drive power supply and the multi-level PWM modulation technology were analyzed in detail. Finally,the system model was built based on PSIM simulation environment. The simulation results verify the feasibility of LED drive power topology.
作者
黄玉水
徐爽
鲍建宇
易元
HUANG Yushui;XU Shuang;BAO Jianyu;YI Yuan(School of Information Engineering,Nanchang University,Nanchang 330031,Jiangxi,China;School of Mechanical and Electrical Engineering,Ningbo Institute of Finance and Economics,Ningbo 315175,Zhejiang,China;School of Information and Electronic Engineering,Shandong Technology and Business University,Yantai 264005,Shandong,China)
出处
《电气传动》
北大核心
2020年第3期102-106,共5页
Electric Drive
关键词
LED驱动
电解电容
五电平
高功率因数
恒流
lighting emitting diode driver
electrolytic capacitor
five-level
high power factor
constant current
