US 12,030,657 B1
System and methods for power split algorithm design for aircraft hybrid electric propulsion based on combined actor-critic RL agent and control barrier function filter
Yasir Al-Nadawi, Vernon, CT (US); Milos Ilak, Hoboken, NJ (US); and Pratyush Kumar, East Hartford, CT (US)
Assigned to RTX CORPORATION, Farmington, CT (US)
Filed by RTX CORPORATION, Farmington, CT (US)
Filed on Oct. 27, 2023, as Appl. No. 18/496,117.
Int. Cl. B64D 31/00 (2024.01); F01D 15/10 (2006.01); B64D 27/02 (2006.01)
CPC B64D 31/00 (2013.01) [F01D 15/10 (2013.01); B64D 27/026 (2024.01); F05D 2270/053 (2013.01); F05D 2270/31 (2013.01); F05D 2270/709 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for a hybrid electric propulsion (HEP) system, comprising:
utilizing a soft actor-critic agent, which includes at least one neural network, and a control barrier function (CBF) filter to obtain a power splitting profile for an HEP system, the power splitting profile including an electric motor power for an electric motor of the HEP system and a gas turbine power for a gas turbine of the HEP system, wherein the electric motor power and gas turbine power collectively provide a combined HEP output power; and
during a flight of an aircraft that includes the HEP system, performing an output action for the HEP system based on the power splitting profile;
wherein said utilizing is performed based on a predefined fuel consumption objective and a state of charge of at least one battery that powers the electric motor.