Proceedings ArticleDOI
Sinusoidal line current rectification at unity power factor with boost quasi-resonant converters
I. Barbi,S.A. Oliveira da Silva +1 more
- pp 553-562
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TLDR
In this paper, a zero-current switching quasi-resonant rectifier (ZCS-QRR) is analyzed theoretically, and a design example is proposed to demonstrate the operating principle, the feasibility of the technique, and the validity of the theoretical analysis.Abstract:
A sinusoidal line current rectifier is considered at unity power factor, where the conventional boost converter, usually utilized between the diode rectifier bridge and the DC bus capacitor, is replaced with a boost zero-current switching quasi-resonant converter (boost ZCS-QRC). The zero-current switching quasi-resonant rectifier (ZCS-QRR) is analyzed theoretically. Normalized curves are plotted, and equations that allow high flexibility in design are developed. A design example is proposed, and experimental results are presented to demonstrate the operating principle, the feasibility of the technique, and the validity of the theoretical analysis. >read more
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References
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Proceedings ArticleDOI
Current waveform distortion in power factor correction circuits employing discontinuous-mode boost converters
K.-H. Liu,Y.-L. Lin +1 more
TL;DR: In this paper, the authors derived the waveform distortion and the maximum power factor achievable in a graph form as functions of the ratio of the line voltage to output voltage for active power factor correction circuits.
Journal ArticleDOI
High-frequency quasi-resonant converter technologies
TL;DR: In this article, a host of new quasi-resonant converters (QRCs) are derived from conventional PWM converters, with a significant improvement in performance and power density.
Journal ArticleDOI
Multi-loop control for quasi-resonant converters
TL;DR: In this paper, a multiloop control scheme for quasi-resonant converters (QRCs) is described, referred to as current-sense frequency modulation (CSFM), where a signal proportional to the output-inductor current is compared with an error voltage signal to modulate the switching frequency.
Proceedings ArticleDOI
Sinusoidal line current rectification with a 100kHZ B-SIT step-up converter
TL;DR: In this article, a step-up converter circuit for the sinusoidal line current rectification at a unity power factor is described, where a Bipolar-Static-Induction-Transitor (SIT) with extremely fast switching times is utilized.
Proceedings ArticleDOI
Unity power factor single phase power conditioning
TL;DR: In this article, the authors present the results of a detailed theoretical and experimental analysis of an elementary switched power conditioning system with unity power factor, where the line current stays sinusoidal and in phase with the bus voltage while its amplitude can be varied within a wide range.
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