高压钠灯的声谐振特征及其混沌抑制  

Characteristics of Acoustic Resonance and Its Chaotic Suppression in High Pressure Sodium Lamp

作　　者：雷芳[1] 程为彬[1] 宋久旭[1] 

机构地区：[1]西安石油大学电子工程学院,西安710065

出　　处：《电源学报》2014年第3期103-109,114,共8页Journal of Power Supply

基　　金：陕西省工业攻关计划项目(2013k07-14);西安石油大学全日制硕士研究生创新基金项目(2012cx110317)~~

摘　　要：高压钠(HPS)灯高频工作时极易产生声谐振现象,轻则电弧弯曲、抖动、旋转、光线闪烁;重则电弧熄灭或者灯管损毁,严重影响灯光的照明效果;同时,灯的电气参数也会发生不同程度的改变。针对这一现象,采集声谐振时的电弧曲线,研究电弧弯曲幅度、抖动频率、电气参数变化与声谐振程度的关系,提出声谐振混沌抑制技术,通过给扫频控制电路输入端叠加低频正弦波、三角波、方波信号进行扰动调制,分散驱动电压频谱,从而降低声谐振时的能量阈值,抑制声谐振现象。文中给出不同类型、不同扰动参数下电压频谱扩散实验效果,结果表明只要扰动信号参数选择合适,频谱便能很好地分散,不同时期的声谐振现象便可被抑制。Acoustic resonance （AR） can develop in high pressure Sodium （HPS） lamp at high frequency, which results in arc distortion, fluctuation, rotation, flickering and extinction and deterioration of lamp in the most severe cases, and influences the lighting efficiency. At the same time, the lamp＇s electrical parameter variations are different. Arc curves of AR are acquired in order to investigate the influences of arc distortion, fluctuation and electrical parameter variations on the AR. Furthermore, the chaotic suppression technology is put forward to spread the spectrum of lamp driving voltage by injecting low frequency sine, triangular and square wave into frequency sweep circuit so as to avoid AR by decreasing energy threshold of AR. The experimental spread effects of voltage spectrum under different type and different parameters of signals are given in this paper and the results show as long as parameters are selected appropriately, the phenomena of AR will be avoided completely.

关 键 词：高压钠灯 声谐振 电弧 频谱分散 抑制 

分 类 号：TM923.32[电气工程—电力电子与电力传动]