Three-Phase AC-DC Converter with Asymmetrical Vienna Rectifier

In this paper, a 3-phase 3-switch 3-level 3-wire AC-DC converter topology with asymmetrical Vienna rectifier is Proposed. The asymmetrical Vienna rectifier is controlled using DCM (Discontinuous Conduction Mode) operation to achieve a simple and low cost control methods. At the same time, the advantage of the asymmetrical Vienna rectifier is studied using PSPICE simulation analysis. The aim of this paper is to provide a simple control and low cost solutions for high power factor 3-phase AC-DC converter applications. The voltage stresses on semiconductor devices, also the behavior of current and voltage waveforms in asymmetrical Vienna rectifier with DCM operation will be analyzed in this paper. The advantage of the proposed asymmetrical Vienna rectifier regarding the conduction losses is also discussed.

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