摘要
介绍了无极灯的等效模型,并在等效模型的基础上得到无极灯电子镇流器的等效电路模型,给出了无极灯电子镇流器的有源功率因数校正电路的选取。针对电子镇流器实际工作中存在谐振频率漂移而国内外对无极灯电子镇流器的控制方案大部分为开环的情况,比较了几种频率跟踪方案的优缺点,确定了电子镇流器的闭环频率跟踪控制方案。
Introduction was made to an equivalent model of electrodeless lamp. On the basis of this, the equivalent model of electronic ballast for electrodeless lamp was obtained. This paper gave the selection of active power factor correction for electronic ballast of electrodeless lamp. In allusion to the shift of resonance frequency of electronic ballast and the situation that the control scheme of electronic ballast of electrodeless lamp is open loop at home and abroad, this paper compared several frequency tracking schemes, confirming the closed-loop frequency tracking scheme for electronic ballast.
出处
《电工电气》
2012年第5期27-30,共4页
Electrotechnics Electric
关键词
无极灯
电子镇流器
频率跟踪
锁相环
electrodeless lamp
electronic ballast
frequency tracking
phase-locked loop
