摘要
Dimmers are very widely applied in theatres,cinemas,dancing-parties, auditoriums and signal systems.They are usually supplied by single-stage AC/AC converters in the past with voltage regulation technique with the disadvantages of high total harmonic distortion,low power factor and poor power transfer efficiency.This paper introduces a novel method-DC-modulation that implements DC/DC conversion technology into AC/AC converters.The DC-modulated single-stage PFC AC/AC converters effectively improved the power factor up to 0.999 and the power transfer efficiency up to 97.8 %.The experimental results verified our design and calculation.This technique will be widely used in light dimming and other industrial applications.
Dimmers are very widely applied in theatres, cinemas, dancing-parties, auditoriums and signal systems. They are usually supplied by single-stage AC/AC converters in the past with voltage regulation technique with the disadvantages of high total harmonic distortion, low power factor and poor power transfer efficiency. This paper introduces a novel method-DC-modulation that implements DC/DC conversion technology into AC/AC converters. The DC-modulated single-stage PFC AC/AC converters effectively improved the power factor up to 0.999 and the power transfer efficiency up to 97.8 %. The experimental results verified our design and calculation. This technique Key words： power factor correction; distortion will be widely used in light dimming and other industrial applications DC-modulated AC/AC converters; light dimming; total harmonic
出处
《电工电能新技术》
CSCD
北大核心
2007年第2期6-10,38,共6页
Advanced Technology of Electrical Engineering and Energy
关键词
直流电
交流电
节电措施
灯光亮度
power factor correction
DC-modulated AC/AC converters
light dimming
total harmonicdistortion
作者简介
罗方林（1948-），男，湖北籍，教授，博导，IEEE高级会员，剑桥大学博士，研究方向为电力电子及电气传动；
叶虹（1973-），女，陕西籍，研究员，南洋理工大学博士，研究方向为电力电子及分子生化结构。
