摘要
介绍了一种新型的荧光灯调光控制方式,即通过占空比调制和频率调制相结合的方式控制荧光灯的输出功率。首先,基于与功率相关的荧光灯模型,通过基波近似的方法得到了控制方程,得出了荧光灯的调光特性;然后,以一个半桥式串联谐振并联负载电路为例,给出了设计步骤及仿真、实验结果。
A new control technique has been developed for high frequency dimming of fluorescent lamps using the integration of duty-ratio modulation and frequency modulation to regulate lamp power.Based on the power-dependent lamp model,the control equations are derived by fundamental approximation,and then dimming characteristics of the fluorescent lamp can be calculated.An electronic ballast with the half bridge series-resonant parallel-load inverter for the fluorescent lamp is used as an example for illustrating the design procedure.Simulated and laboratory circuits were build and tested.The results were presented.
出处
《电力电子技术》
CSCD
北大核心
2003年第6期42-44,共3页
Power Electronics
关键词
镇流器
谐振/电子镇流器
调光
占空比调制
功率模型
ballast
resonant/electronic ballast
dimming
duty-ratio modulation
power-dependent model
