摘要
本文简述了频闪对人体的危害,并根据IEEE Std 1789-2015标准中闪烁百分比和NM(Normalized Modulation,归一化调制)指标要求,对自镇流LED球泡灯的频闪进行了检测,找出了产生原因,并尝试增大阻容降压式驱动电路中的铝电解电容容量,LED驱动电源中增加滤波电路,采用非隔离降压型LED恒流驱动等方法来改善自镇流LED球泡灯的频闪。其中,采用非隔离降压型LED恒流驱动的方式综合效果较好。
In this paper, the harm of flicker on human body was described briefly. The flicker of self- ballasted LED lamps was tested according to the requirements of IEEE Std 1789-2015 for percent flicker and NM, and the reason for flicker were analyzed. In order to improve the flicker problem of the self- ballasted LED lamps, we tried to increase the capacitance of the aluminum electrolytic capacitors in the RC voltage-reducing driver, add filter circuit in LED driving power, use non-isolated buck LED constant current drive. Among them, the non-isolated buck LED constant current drive mode has a better effect.
出处
《中国照明电器》
2017年第12期44-49,共6页
China Light & Lighting
