Patent ID: 11863074
Assignee: SCHNEIDER ELECTRIC IT CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. A non-transitory computer-readable medium storing thereon sequences of computer-executable instructions for controlling an uninterruptible power supply including at least one input, an output, a first converter leg, the first converter leg including a first current sensor and at least one of a first relay or a first fuse, and a second converter leg configured to be coupled in parallel with the first converter leg, the second converter leg including a second current sensor and at least one of a second relay or a second fuse, the sequences of computer-executable instructions including instructions that instruct at least one processor to:
control the first converter leg to provide a first voltage signal to the output via the at least one of the first relay or the first fuse;
control the second converter leg to provide a second voltage signal to the output via the at least one of the second relay or the second fuse, wherein the second converter leg provides the second voltage signal out of phase with the first converter leg providing the first voltage signal;
receive a first current-sense signal indicative of a first current in the first converter leg from the first current sensor;
receive a second current-sense signal indicative of a second current in the second converter leg from the second current sensor;
determine a current difference between the first converter leg and the second converter leg based on the first current-sense signal and the second current-sense signal; and
decrease the current difference between the first converter leg and the second converter leg.