A medium voltage direct current source

Abstract

This utility model discloses a medium-voltage DC power source, comprising a three-phase power supply, a voltage regulator, a phase-shifting transformer, and a rectifier circuit connected in sequence. The rectifier circuit includes a first rectifier circuit and a second rectifier circuit connected in series or parallel. The phase-shifting transformer includes a primary winding connected to the voltage regulator in a star configuration, a first secondary winding connected in a star configuration, and a second secondary winding connected in a delta configuration. The three terminals of the first secondary winding are respectively connected between two rectifier diodes in the three groups of rectifier diodes in the first rectifier circuit; the three terminals of the second secondary winding are respectively connected between two rectifier diodes in the three groups of rectifier diodes in the second rectifier circuit. This utility model provides a medium-voltage DC power source that, after drawing power from the mains, outputs a relatively stable DC pulse power supply after voltage regulation, phase shifting, and rectification. The output voltage can be adjusted by the voltage regulator, and the pulse output can be increased by changing the series-parallel connection of the power supply.

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