一种数字化小功率金卤灯电子镇流器的研究  

Research on a Digital Electronic Ballast for Low Power Metal-Halide Lamp

作　　者：刘汉奎[1] 江檀[1] 徐殿国[1] 

机构地区：[1]哈尔滨工业大学

出　　处：《电力电子技术》2006年第6期7-8,45,共3页Power Electronics

基　　金：哈尔滨工业大学MD2002跨学科交叉基金(HITMD.2002.12)~~

摘　　要：研究了一种新型的具有异常状态自动保护和稳态灯功率闭环的小功率金卤灯电子镇流器,分析其电路结构、工作原理和控制程序。启动阶段采用并联负载谐振电路,稳态阶段采用半桥双Buck电路。采用3次谐波谐振方式可以降低启动电流,采用启动电压限幅值控制滑频截止点可以克服元件参数离散性的影响。采用低频方波方式可有效抑制稳态的声谐振。仿真及实验结果证明了该电路的有效性。A novel digital electronic ballast for low power Metal Halide （MH） lamp,which could realize automatic protection under abnormal condition and closed-loop control of lamp power in steady state, is studied in this paper.Its topology, operating theory and control program are analyzed.Parallel Load Resonant （PLR） circuit was used during starting stage,while dual-Buck half-bridge was used during steady stage.Resonance with third-order harmonic voltage was adopted to reduce starting current.The end of frequency variation was controlled by the limiter of starting voltage to eliminate the influence of component parameter difference.Low frequency square-wave mode was used to avoid acoustic resonance.Its validity is proved by theoretical and experimental results.

关 键 词：镇流器 卤素灯 谐振/金卤灯 

分 类 号：TM923.61[电气工程—电力电子与电力传动] TM921.5