摘要
针对现有LED驱动电源寿命受到电解电容自身寿命限制的问题,提出了一种新型的高效LED驱动电源,经过对现有LED驱动电源的工作原理和电路组成的分析研究,采用把无极性电容器稳压电路与分压整流线性控制驱动电路有机结合的方法,将无极性电容器代替电解电容器,实现无变压器,降低了电源在工作中的磁、热损耗,延长了现有LED灯的开关频率寿命,并将现有带调节功能的LED驱动电源电能的有效利用率由50%~70%提升至80%以上,为LED驱动电源的普及及广泛应用提供了一种新的设计方法。
Aiming at the problem of the existing LED driver power supply which is limited by the life of the existing electrolytic capacitors,a new type of high-efficiency LED driver power supply was proposed.After analyzing and studying the working principle and circuit composition of the existing LED driver power supply,the method of combining the voltage stabilization circuit of polarity-free capacitor with the voltage dividing rectifier linear control driver circuit was adopted,the electrolytic capacitor was replaced with polarity-free capacitor,the transformerless was achieved,magnetic and thermal losses in the work of the power supply were reduced,the switching frequency life of the existing LED lights was extended,and the effective utilization rate of the existing LED drive power supply with regulation function was improved from 50%~70%to more than 80%.The new method could provide a new design method for the popularization and wide application of LED driver power supply.
作者
毛书凡
陈壮
韩旭
MAO Shufan;CHEN Zhuang;HAN Xu(Engineering Training Center,Tianjin University of Technology,Tianjin 300384,China)
出处
《电气传动》
2021年第14期3-7,共5页
Electric Drive
基金
天津市高等学校国家级大学生创新创业训练计划项目(201410060012)。
