金属卤化物灯电子镇流器研究  

Research on high-frequency electronic ballast for MH lamps

作　　者：林国庆[1] 陈大华[1] 陈和平 

机构地区：[1]复旦大学 [2]福建源光亚明电器有限公司,福建福州350001

出　　处：《电工电能新技术》2004年第4期70-72,77,共4页Advanced Technology of Electrical Engineering and Energy

基　　金：中国博士后基金;福州大学科技发展基金资助项目(2002 XQ 06)

摘　　要：:本文提出了一种在高频下工作的金属卤化物灯电子镇流器,分析了其电路组成及工作原理,由于高频开关管实现了零电压通断,提高了工作效率;利用纹波电压作为调制信号对灯电流进行频率和幅值调制,避免了声共振的发生;采用扫频谐振方式产生高压触发脉冲,触发可靠;与传统低频方波工作方式相比,结构简单、所用器件少、效率高、可靠性高。实验结果验证了该方案是可行的。A high-frequency electronic ballast is proposed to operate MH lamps in the paper. The circuit composition and operating principle are detailed. Because of ZVS (Zero-voltage-switching) operation, it can work in high switching frequency while achieving higher efficiency. The frequency and amplitude modulation of the inverter switching pattern is used to prevent the acoustic resonance. A high-voltage ignition pulse is made by sweep frequency resonance mode and possibly increases ignition reliability. The proposed electronic ballast can eliminate a controller and three active switches, reduce size and possibly increase system efficiency and reliability over a conventional low-frequency square-wave system. The experimental measurements are used to verify the theoretical prediction and analytical discussion.

关 键 词：金属卤化物灯 高频 电子镇流器 声共振 

分 类 号：TM5[电气工程—电器]