Author
Nasser Ismail
Bio: Nasser Ismail is an academic researcher. The author has contributed to research in topics: Ćuk converter & Flyback converter. The author has an hindex of 1, co-authored 1 publications receiving 1 citations.
Papers
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Dissertation•
01 Jan 1996
TL;DR: In this article, the authors proposed a single-stage power factor correction converter circuit using the traditional non-power-factor corrected circuit configuration with only few additional components, such as an additional winding on the high frequency transformer, a small high frequency inductor and three diodes.
Abstract: Conventional single phase AC/DC converters use a two stage power configuration to provide a regulated DC power supply at high input power factor. Elimination of one of these stages can reduce the cost, weight, size, complexity and increase the overall reliability of this converter. This thesis proposes a single stage power factor correction converter circuit. This proposed converter circuit uses the traditional non-power-factor corrected circuit configuration with only few additional components. These are: an additional winding on the high frequency transformer, a small high frequency inductor and three diodes. The topology allows the output voltage regulation and input current shaping with a single power processing stage and one control chip. In addition, it is shown that this converter can be designed to offer soft switching of the full bridge switches. The operating principles of the proposed converter are discussed and its performance characteristics under steady state conditions are examined. A design procedure is illustrated to select the components of the converter for a 500 W power supply operating at 50 kHz. Theoretical results are verified with simulation and experimental tests on a 500 W laboratory prototype.
1 citations
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23 Feb 1997
TL;DR: In this paper, a new single stage power factor corrected full bridge AC/DC converter with zero switching losses and a simple control circuitry is presented. But the converter has only a few additional components compared to the non-power factor corrected circuits: an additional transformer winding, small inductor and three diodes.
Abstract: This paper presents a new single stage power factor corrected full bridge AC/DC converter operated with zero switching losses and has a simple control circuitry This converter has only a few additional components compared to the nonpower factor corrected circuits: an additional transformer winding, small inductor and three diodes This circuit allows the output voltage regulation and input current shaping with single stage and one control chip, Analytical, simulation and experimental results confirm the feasibility, and demonstrate the good efficiency and close to unity power factor
10 citations