Transformer-based ac / ac conversion unit for modular ac / dc, dc / ac or dc / dc converters

Abstract

The present invention relates to a power converter (1") comprising: (i) a plurality of primary windings (3-R, 3-S, 3-T); and (ii) a plurality of secondary windings (4-a...4-n, 5-a...5-n, 6-a...6-n) magnetically linked with said plurality of primary windings (3-R, 3-S, 3-T); and a plurality of groups of reconfigurable connection modules connected to three terminals (R', S', T') of said power converter (1"), said plurality of groups of reconfigurable connection modules being interconnected, wherein each group of said plurality of groups of reconfigurable connection modules comprises a respective group of reconfigurable connection modules, the reconfigurable connection modules of the respective group being electrically coupled to the secondary windings of said group; and wherein each reconfigurable connection module comprises a plurality of electronic switches configured to establish, at successive instants: a direct connection, a bypass connection and a reverse connection, wherein the voltage supplied to the input of the respective reconfigurable connection module is transmitted to its output with opposite polarity.

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