Improving Current Crest Factor of Fluorescent Lamp with Valley-Fill Filter Using Pulse Width Modulation

摘要：

In this paper, a pulse width modulation(PWM) method to reduce the fluorescent lamp current crest factor of the valley-filled power factor corrected(PFC) electronic ballast is presented. The proposed method controls switching duty cycle by feeding forward the dc-link voltage waveform of valley-filled PFC, restraining the lamp peak current and improving the lamp current crest factor. The control block diagram and basic theory are introduced to improve the current crest factor. Computer simulations are used to verify the proposed theory and obtain a minimum crest factor. Experimental results indicate that the lamp current crest factor is minimized to about 1.58. Additionally, the fixed switching frequency operation results in a satisfactory power quality. The ac line power factor is about 96％, and the input current THD is about 29.3％.

作者: Zhi-ren LEE Horng-ching HSIAO Chang-shien LIN

作者单位: National Taiwan University of Science and Technology, Taiwan Institute of Northern Taiwan, Taiwan

会议类型: 国际会议

会议名称: 2nd IEEE Conference on Industrial Electronics and Applications(ICIEA 2007)(第二届IEEE工业电子与应用国际会议)

会议地点: 哈尔滨

会议语种:英文

在线出版日期: 2007-05-23（万方平台首次上网日期，不代表论文的发表时间）