Type of Document	Dissertation
Author	Zhang, Jindong
Author's Email Address	jindong@vt.edu
URN	etd-03232001-044800
Title	Advanced Integrated Single-Stage Power Factor Correction Techniques
Degree	PhD
Department	Electrical and Computer Engineering
Advisory Committee	Advisor Name Title Fred C. Lee Committee Chair Dan Chen Committee Member Guo-quan Lu Committee Member Jason Lai Committee Member Milan Jovanovic Committee Member Yilu Liu Committee Member
Keywords	single-stage power factor correction
Date of Defense	2001-03-15
Availability	unrestricted
Abstract This dissertation presents the in-depth study and innovative solutions of the advanced integrated single-stage power-factor-correction (S2PFC) techniques, which target at the low- to medium-level power supplies, for wide range of applications, from power adapters and computers to various communication equipment. To limit the undesirable power converter input-current-harmonic’s impact on the power line and other electronics equipment, stringent current harmonic regulations such as IEC 61000-3-2 have already been enforced. The S2PFC techniques have been proposed and intensively studied, in order to comply these regulations with minimal additional component count and cost. This dissertation provides a systematic study of the S2PFC input-current-shaping (ICS) mechanism, circuit topology generalization and variation, bulk capacitor voltage stress and switch current stress, converter design and optimization, and evaluation of the state-of-the-art S2PFC techniques with universal-line input. Besides, this presentation also presents the development of novel S2PFC techniques with a voltage-doubler-rectifier front end to both improve the performance and reduce the cost of S2PFC converters for (international voltage range) universal-line applications. The calculation and experimental results show that the proposed techniques offer a more cost-effective and efficient solution than industries’ current practice, with universal-line input and converter power level up to 600 W. Finally, further improved technique is also presented with reduced filter inductor size and increased power density.
Files	Filename       Size       Approximate Download Time (Hours:Minutes:Seconds)     28.8 Modem   56K Modem   ISDN (64 Kb)   ISDN (128 Kb)   Higher-speed Access    Abstract.pdf 48.27 Kb 00:00:13 00:00:06 00:00:06 00:00:03 < 00:00:01   acknowledgment.pdf 65.22 Kb 00:00:18 00:00:09 00:00:08 00:00:04 < 00:00:01   chapter1.pdf 576.72 Kb 00:02:40 00:01:22 00:01:12 00:00:36 00:00:03   chapter2.pdf 764.35 Kb 00:03:32 00:01:49 00:01:35 00:00:47 00:00:04   chapter3.pdf 723.05 Kb 00:03:20 00:01:43 00:01:30 00:00:45 00:00:03   chapter4.pdf 2.75 Mb 00:12:45 00:06:33 00:05:44 00:02:52 00:00:14   chapter5.pdf 2.08 Mb 00:09:37 00:04:57 00:04:20 00:02:10 00:00:11   chapter6.pdf 1.77 Mb 00:08:12 00:04:13 00:03:41 00:01:50 00:00:09   chapter7.pdf 714.34 Kb 00:03:18 00:01:42 00:01:29 00:00:44 00:00:03   chapter8.pdf 57.88 Kb 00:00:16 00:00:08 00:00:07 00:00:03 < 00:00:01   Cover-VT.PDF 8.36 Kb 00:00:02 00:00:01 00:00:01 < 00:00:01 < 00:00:01   List-of-figures.pdf 136.02 Kb 00:00:37 00:00:19 00:00:17 00:00:08 < 00:00:01   Reference.pdf 93.47 Kb 00:00:25 00:00:13 00:00:11 00:00:05 < 00:00:01   Table-of-contents.pdf 84.19 Kb 00:00:23 00:00:12 00:00:10 00:00:05 < 00:00:01   vita.pdf 40.70 Kb 00:00:11 00:00:05 00:00:05 00:00:02 < 00:00:01

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