US 12,391,392 B1
Master-slave hybrid-electric powertrain control architecture with supervisory power management control
Xuening Lu, Oakville (CA); Poi Loon Tang, Coquitlam (CA); Richard Freer, Mont-Sainte-Hilaire (CA); and Louis-Philippe Larose, St-Sabine (CA)
Assigned to Pratt & Whitney Canada Corp., Longueuil (CA)
Filed by Pratt & Whitney Canada Corp., Longueuil (CA)
Filed on Dec. 11, 2024, as Appl. No. 18/977,403.
Int. Cl. B64D 31/09 (2024.01); B64D 31/18 (2024.01)
CPC B64D 31/18 (2024.01) [B64D 31/09 (2024.01)] 20 Claims
OG exemplary drawing
 
1. A method of operating a hybrid electric powertrain, the method comprising:
determining, based on a hybrid electric powertrain (HEP) power/torque demand and a maximum torque limit for a gas turbine engine having a mechanical output coupled to a power shaft of the HEP, a target torque for the gas turbine engine;
controlling the gas turbine engine to operate according to a target speed or the target torque; and
while operating the gas turbine engine according to the target speed or the target torque:
determining, based on the HEP torque demand and the target torque, a total torque compensation demand for an electric machine having a mechanical output controllably couplable to the power shaft of the HEP; and
operating the electric machine according to the total torque compensation demand,
wherein the total torque compensation demand is determined as a sum of a steady state torque compensation demand and a dynamic torque compensation demand.