一种新型的调光电子镇流器  

A Novel Dimming Electronic Ballast

作　　者：滕妨华[1] 张仲超[1] 

机构地区：[1]浙江大学,浙江杭州310027

出　　处：《电源技术应用》2003年第12期38-40,共3页Power Supply Technologles and Applications

摘　　要：介绍了一种新型的荧光灯调光控制方式,即通过不对称占空比调制的方式控制荧光灯的输出功率。首先,基于功率关系的荧光灯模型,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,应用一个半桥式串联谐振并联负载电路为例,给出了设计步骤,仿真及实验结果。A new control technique has been developed for high frequency dimming of the fluorescent lamps using the asymmetry duty-ratio modulating:to regulate lamp power.Based on the power-depemdent lamp model,the control equations are derived by fundamental approximation,and then the 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 built and tested.The results were presented.

关 键 词：调光电子镇流器 占空比调制 谐振 功率模型 控制方式 

分 类 号：TM923.61[电气工程—电力电子与电力传动]