US 9,812,866 B2
Energy storage system
Michelle Hunt, Minneapolis, MN (US); Elias M. Ayana, Minneapolis, MN (US); and Bradford K. Palmer, Ham Lake, MN (US)
Assigned to CUMMINS POWER GENERATION IP, INC., Minneapolis, MN (US)
Filed by Cummins Power Generation IP, Inc., Minneapolis, MN (US)
Filed on Feb. 19, 2015, as Appl. No. 14/626,181.
Prior Publication US 2016/0359328 A1, Dec. 8, 2016
Int. Cl. H02J 3/38 (2006.01); H02J 7/34 (2006.01); H02J 3/06 (2006.01); H02J 3/32 (2006.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01); H02J 9/06 (2006.01)
CPC H02J 3/32 (2013.01) [H02J 7/007 (2013.01); H02J 7/022 (2013.01); H02J 7/34 (2013.01); H02J 9/062 (2013.01)] 25 Claims
OG exemplary drawing
 
1. An energy storage system comprising:
an energy storage device;
a bidirectional inverter configured to control a flow of power into or out of the energy storage device; and
a controller configured to control the bidirectional inverter based on one or more signals received from a generator set coupled in parallel to the bidirectional inverter via an alternating current (AC) bus, wherein the controller is configured to, based on the one or more signals, control the bidirectional inverter to store power generated by the generator set in the energy storage device and transmit power from the energy storage device to a load driven by the generator set to maintain the generator set within a range of one or more operating conditions.