纵向磁场对小功率金属卤化物灯声共振的影响  

Effects of Axial Magnetic Field on Acoustic Resonance of Low Power Metal Halide Lamp

作　　者：刘志远[1] 孙阳[1] 陈忠 

机构地区：[1]西安交通大学电气工程学院,西安710049 [2]Philps照明电子(上海)有限公司,上海201801

出　　处：《照明工程学报》2006年第2期33-38,共6页China Illuminating Engineering Journal

摘　　要：本文对纵向磁场作用下小功率金属卤化物灯电弧声共振现象进行了实验研究。研究了在自制的3种线圈中,通过0A,30A和50A三种直流电流产生的纵向磁场下,4个品牌的8只70W金属卤化物灯在20kHz电子镇流器的驱动下声共振起始及终止时间。结果表明在本文研究的条件下,纵向磁场不能消除声共振现象,但纵向磁场的增强可以使得声共振的起始时刻有所滞后。本文结果可为小功率金属卤化物灯声共振现象的研究提供经验。Applying axial magnetic field on low power metal halide lamps, its effects on acoustic resonance were observed experimentally. DC current passing through a coil generated the axial magnetic field. 3 coils and 3 kinds of DC current-0A, 30A and 50A were applied in the experiments. 8 lamps of 4 brands were tested. The lamps were driven by 20kHz electronics ballast. The start and end instant of acoustic resonance was recorded in each measurement. It was found that acoustic resonance didn＇t disappear by applying axial magnetic field on the lamps, but start instant of acoustic resonance delayed at stronger axial magnetic field. It would provide experience for acoustic resonance study.

关 键 词：高强度气体放电灯 声共振 纵向磁场 

分 类 号：TM923.3[电气工程—电力电子与电力传动]