Method and apparatus for generating single-phase power from a three-phase resonant power converter

摘要

A method and apparatus for providing AC power. In one embodiment, the apparatus comprises a cycloconverter controller for determining a DC value based on a reference waveform and a three-phase cycloconverter, coupled to the cycloconverter controller, for selectively coupling, based on the DC value, an alternating current to an AC line to generate a single-phase AC output.

主权项

1. An apparatus for providing AC power, comprising:
a three-phase cycloconverter, located on a secondary side of a transformer, coupled to a plurality of AC phase lines and to a neutral line; a switch, located on the secondary side of the transformer, coupled across an input of the three-phase cycloconverter, wherein the switch is a fully bi-directional four-quadrant switch; and a cycloconverter controller, coupled to the three-phase cycloconverter and to the switch for (i) determining a DC value that indicates a value of a reference waveform during a time window, and (ii) controlling, based on the DC value, the three-phase cycloconverter and the switch to selectively couple an alternating current, the alternating current generated by a resonant circuit, to an AC phase line of the plurality of AC phase lines and to the neutral line to generate only a single-phase AC output.