Single phase operation of a three-phase drive system

摘要

Single-phase voltage operation techniques are provided for a three-phase drive system. A drive system may include a rectifier configured to couple to a three-phase AC voltage source. The rectifier may be configured to convert AC voltage from the three-phase AC voltage source to a direct current (DC) voltage. The drive system may also include a controller configured to send a plurality of switching signals to a plurality of switches in the rectifier such that the plurality of switching signals minimizes a current provided to the rectifier when only a single-phase of the three-phase AC voltage source is available.

主权项

1. A drive system, comprising:
a rectifier configured to couple to a three-phase alternating current (AC) voltage source, wherein the rectifier is configured to convert AC voltage from the three-phase AC voltage source to a direct current (DC) voltage; and a controller configured to:
operate the rectifier using a single phase of the three-phase AC voltage source, wherein operating the rectifier using the single phase of the three-phase voltage source comprises sending a plurality of switching signals to a plurality of switches in the rectifier via a plurality of wired or wireless communication links, and wherein the plurality of switching signals are configured to minimize a current provided to the rectifier from the single phase of the three-phase AC voltage source while maintaining an operation of a motor coupled to the drive system, wherein the controller is configured to send the plurality of switching signals by:determining a plurality of firing angles for the plurality of switches;determining a plurality of conduction angles for the plurality of switches, wherein the plurality of firing angles and the plurality of conduction angles are configured to minimize the current provided to the rectifier; andsending the plurality of firing angles and the plurality of conduction angles to the plurality of switches.