一种无电解电容高压大功率LED驱动电源  

A High Voltage and High Power LED Driver Without Electrolytic Capacitor

作　　者：黄玉水[1] 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)

机构地区：[1]南昌大学信息工程学院,江西南昌330031 [2]宁波财经学院机械与电气工程学院,浙江宁波315175 [3]山东工商学院信息与电子工程学院,山东烟台264005

出　　处：《电气传动》2020年第3期102-106,共5页Electric Drive

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.

关 键 词：LED驱动 电解电容 五电平 高功率因数 恒流 

分 类 号：TM923[电气工程—电力电子与电力传动]