US 11,811,262 B2
Uninterruptible power supply component analysis system and method
Subhash Chand Bansal, Bangalore (IN); Sumandra Ghosh Chowdhury, Bangalore (IN); and Murali Krishna Kalvakunta, Bangalore (IN)
Assigned to SCHNEIDER ELECTRIC IT CORPORATION, Foxboro, MA (US)
Filed by SCHNEIDER ELECTRIC IT CORPORATION, Foxboro, MA (US)
Filed on Jun. 3, 2022, as Appl. No. 17/805,242.
Application 17/805,242 is a continuation of application No. 17/161,073, filed on Jan. 28, 2021, granted, now 11,362,538, issued on Jun. 14, 2022.
Claims priority of application No. 202011004304 (IN), filed on Jan. 31, 2020.
Prior Publication US 2022/0294258 A1, Sep. 15, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02J 9/06 (2006.01); G01R 31/327 (2006.01); G01R 31/40 (2020.01); H02M 3/04 (2006.01); H02M 7/44 (2006.01)
CPC H02J 9/06 (2013.01) [G01R 31/3278 (2013.01); G01R 31/40 (2013.01); H02J 9/062 (2013.01); H02M 3/04 (2013.01); H02M 7/44 (2013.01)] 29 Claims
OG exemplary drawing
 
1. An uninterruptible power supply comprising:
a first input configured to receive input power;
a second input configured to receive backup power;
an output configured to be coupled to at least one load, and configured to provide output power from at least one of the first input or the second input to the at least one load;
at least one sensor;
at least one relay; and
at least one controller coupled to the at least one sensor and to the at least one relay, the at least one controller being configured to:
determine, based on stored relay specifications, a total estimated remaining relay lifetime;
receive operational information indicative of operational parameters of operation of the at least one relay from the at least one sensor, the operational information including a current conducted by the at least one relay;
identify, responsive to identifying a switching event of the at least one relay, a load type of a load of the at least one relay;
determine, based on the operational information, an effective number of relay cycles consumed by the operation of the at least one relay;
determine a modified number of remaining relay cycles, the modified number of remaining relay cycles being based on a difference between the total estimated remaining relay lifetime and the effective number of relay cycles consumed; and
output remaining-relay-lifetime information indicative of the modified number of remaining relay cycles.