Bidirectional three-phase PFC concept based on an integrated inverting-link current source converter

This work introduces a new three-phase buck-type unity power factor converter appropriate to act as an interface between a residential DC power distribution and the three-phase AC grid. The AC-to-DC power converter is constructed with a conventional six-switch buck-type PFC converter and an integrated current inverting-link circuit. The characteristics of this circuit, including dimensioning formulas, appropriate modulation and control structure, are described in this paper. Simulation results are used to validate the circuit operation and to verify the accuracy of the converter power loss model developed.

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