US 12,438,389 B2
Method for controlling a reactive power flow in a hybrid energy storage system
Tomás̆ Kacetl, Pardubice (CZ); Jan Kacetl, Pardubice (CZ); and Wasim Sarwar Dilov, Zagreb (HR)
Assigned to RIMAC TECHNOLOGY LLC, Sveta Nedelja (HR)
Filed by Rimac Technology LLC, Sveta Nedelja (HR)
Filed on Oct. 7, 2024, as Appl. No. 18/908,760.
Claims priority of application No. 23202720 (EP), filed on Oct. 10, 2023.
Prior Publication US 2025/0118986 A1, Apr. 10, 2025
Int. Cl. H02J 7/34 (2006.01); H02J 3/18 (2006.01); H02J 3/32 (2006.01); H02J 7/00 (2006.01)
CPC H02J 7/342 (2020.01) [H02J 3/18 (2013.01); H02J 3/322 (2020.01); H02J 7/0024 (2013.01); H02J 7/00714 (2020.01); H02J 7/007182 (2020.01); H02J 7/345 (2013.01); H02J 2203/10 (2020.01); H02J 2207/20 (2020.01); H02J 2207/50 (2020.01)] 19 Claims
OG exemplary drawing
 
1. A method for actively controlling an output voltage of a first energy storage system connected in parallel to a second energy storage system for controlling a reactive or active power flow from or into either of the energy storage systems, the method comprising:
providing at least one reactive or active power flow demand value of at least one phase load and/or a phase grid;
providing an output voltage measurement value and a current measurement value of the second energy storage system;
calculating a reactive or active-power-flow-demand current value of the second energy storage system based on the at least one reactive or active power flow demand value and the output voltage measurement value;
calculating a control output voltage value of the first energy storage system based on the reactive or active-power-flow-demand current value and the current measurement value of the second energy storage system;
modulating the control output voltage value into at least one control signal; and
controlling the output voltage of the first energy storage system based on the at least one control signal.