电感寄生电容对电子镇流器启动的影响

Influence of Self-Capacitance of Inductor on Electronic Ballast Ignition

针对电子镇流器启动时的可靠性要求研究了电子镇流器的谐振方法。对串联谐振、并联谐振、串并联谐振3种谐振方法进行比较后,选择了串并联谐振法,并分析研究了这种谐振方法存在的问题。为了使电子镇流器可靠启动,必须提供足够高的启动电压。通过研究串并联谐振电路启动时各种参数,发现电感的寄生电容对启动电压影响特别大,因此针对这种现象对原有方法进行了改进,使启动电压达到3kV以上,从而能够可靠地将灯点亮。介绍了滑频启动方法,并对该方法加以改进,实现了可靠点灯。

This article studies the reliability of electronic ballast ignition.With the research on the resonance means in electronic ballast,three means i.e. resonance in series,resonance in parallel,resonance in series-parallel are compared, and last one is chosen.Tbe research on the problem of the selected means is carried out.In order to make the ignition reli- able,enough high voltage must be supplied.Researching on the parameter in series-parallel connection circuit diseoveres that the influence of parasitic-capacitance of inductor on electronic ballast ignition is very prodigious, so some bet-terments are made to make the ignition voltage reach more than 3 kV, and to ignit the light very reliably.