US 11,863,074 B2
Method for paralleling of interleaved power converters
Jonas Sonsby Mouridsen, Odense V (DK)
Assigned to SCHNEIDER ELECTRIC IT CORPORATION, Foxboro, MA (US)
Filed by SCHNEIDER ELECTRIC IT CORPORATION, Foxboro, MA (US)
Filed on Sep. 29, 2021, as Appl. No. 17/489,183.
Prior Publication US 2023/0106045 A1, Apr. 6, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01); H02J 9/06 (2006.01); H02M 7/483 (2007.01); H02M 1/14 (2006.01)
CPC H02M 3/1586 (2021.05) [H02J 9/062 (2013.01); H02M 1/0009 (2021.05); H02M 1/14 (2013.01); H02M 7/483 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An uninterruptible power supply comprising:
a first input configured to be coupled to a primary power source;
a second input configured to be coupled to a backup power source;
an output configured to be coupled to a load;
a first converter leg configured to provide a first voltage signal to the output, wherein the first converter leg includes at least one of a first relay or a first fuse;
a second converter leg configured to provide a second voltage signal to the output and configured to be coupled in parallel with the first converter leg, wherein the second converter leg provides the second voltage signal out of phase with the first converter leg providing the first voltage signal, and wherein the second converter leg includes at least one of a second relay or a second fuse;
a first current sensor coupled to the first converter leg and being configured to provide a first current-sense signal indicative of a first current in the first converter leg;
a second current sensor coupled to the second converter leg and being configured to provide a second current-sense signal indicative of a second current in the second converter leg; and
at least one controller configured to:
receive the first current-sense signal and the second current-sense signal;
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.