Modified Synchronous-Buck Converter for a Dimmable HID Electronic Ballast

作者：Stankovic Ana Vladan^*; Nerone Louis; Kulkarni Prerana

来源：IEEE Transactions on Industrial Electronics, 2012, 59(4): 1815-1824.

DOI：10.1109/TIE.2011.2141094

• Dimming
• high-intensity-discharge (HID) ballast
• lighting
• synchronous buck

In this paper, a simple and effective way of increasing the efficiency of a three-stage low-frequency dimmable high-intensity-discharge (HID) electronic ballast is proposed. To increase the efficiency at all dimming levels, a modified synchronous-buck converter operating in a new critical conduction mode is presented. The proposed modified topology of the synchronous-buck converter operates in a soft-switching mode and therefore significantly increases the efficiency of the three-stage low-frequency HID electronic ballast at all dimming levels. Analytical and experimental results for a dimmable 400-W HID lamp are presented.

• 出版日期2012-4