高强度气体放电灯镇流器关键技术研究

Reasearch on Key Technology for High-Intensity-Discharge Lamp Ballast

高强度气体放电灯(HID)的启动需配合镇流器,从HID声谐振的避免、启动以及恒功率控制等关键技术研究了HID电子镇流器。结果表明,采用低频方波策略可以有效地抑制HID声谐振现象的发生,采用高压脉冲电路很容易产生高压脉冲启动信号,其中谐振脉冲电路不需要采用变压器,可减小镇流器体积。通过两种恒功率控制方式的比较,可以看出数字恒功率控制已经成为一种趋势。

High-intensity-discharge lamps（HID） cannot be started without ballasts. HID electronic ballasts were studied fully from the key technology,such as how to avoid acoustic resonance,how to start the HID,how to maintain constant power control of HID and so on. The results show that using low frequency square wave strategy can effectively suppress HID acoustic resonance,adopt-ing high-voltage impulse circuit can easily produce a high-voltage impulse enabling signal and resonance impulse circuit need not a transformer,which makes the volume of ballasts reduced. Comparison between two modes of constant power control shows that the digital constant power control has become a trend.