US 12,463,428 B2
Systems and methods for multiple energy storage system dispatch
Suresh B. Reddy, Peoria, IL (US); Kevin J. Sergott, Dunlap, IL (US); and Ronald C. Gayles, Peoria, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Oct. 4, 2023, as Appl. No. 18/480,875.
Prior Publication US 2025/0118965 A1, Apr. 10, 2025
Int. Cl. H02J 3/32 (2006.01); H02J 3/38 (2006.01); H02J 3/46 (2006.01); H02J 7/00 (2006.01)
CPC H02J 3/32 (2013.01) [H02J 3/381 (2013.01); H02J 3/46 (2013.01); H02J 7/0048 (2020.01); H02J 7/00712 (2020.01); H02J 2203/10 (2020.01); H02J 2300/30 (2020.01)] 18 Claims
OG exemplary drawing
 
1. A microgrid system comprising:
an electrical bus;
at least one electrical load connected to the electrical bus;
at least one non-energy storage system asset configured to supply electrical power to the electrical bus;
an energy storage system group connected to the electrical bus, the energy storage system group including:
two or more energy storage system assets configured to supply electrical power to the electrical bus; and
a system controller operatively coupled to each of the assets connected to the electrical bus, wherein the system controller is configured to:
determine that at least two of the energy storage system assets have a same priority for power distribution;
determine characteristic power set points for the at least one non-energy storage system asset,
generate a dispatch signal for the energy storage system assets having the same priority by treating a dispatch for the energy storage system assets having the same priority as a combined asset, wherein the system controller is configured to generate the dispatch signal by i) determining weighted set points for each of the energy storage system assets having the same priority, ii) modifying, based on the weighted set points, a charge/discharge limit corresponding to a state of charge or state of energy condition for each of the energy storage system assets having the same priority, and iii) computing the dispatch signal based on the modified charge/discharge limits, a load on the electrical bus, and the characteristic power set points for the at least one non-energy storage system asset, and
dispatch, based on the generated dispatch signal, individual ones of the energy storage system assets having the same priority based on the modified charge/discharge limits.