Efficiency Improvement of a Three-Phase Telecom Rectifier with Single-Stage Structure and Power Factor Correction <br/>

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Efficiency Improvement of a Three-Phase Telecom Rectifier with Single-Stage Structure and Power Factor Correction

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 41707 (05)
University: Sharif University of Technology
Department: Electrical Engineering
Advisor(s): Zolghadri, Mohammad Reza
Abstract:
The objective of this project is to design and control and optimize a single-stage three-phase three-switch unity power factor telecom rectifier. For this purpose, the topology of three-phase three-switch converter has been investigated for both isolated and un-isolated converters. Following a comprehensive investigation on the converter structure, the power dissipation factors have been detected and the quantity of the power dissipation has been calculated by analytical methods and it confirmed by simulation results. To avoid extra power losses some novel soft-switched structures for three-phase three-switched converters have been introduced. the proper operation of the soft-switched converters have been confirmed by simulation results. Finally the results of design and implementation of a 400W prototype with 220 V_(rms,l-l) input voltage are presented
Keywords:
Three-Phase Telecom Rectifier ; Soft-Switching ; Power Factor Correction ; Single-Stage Structure

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