MASTER-SLAVE HYBRID-ELECTRIC POWERTRAIN CONTROL ARCHITECTURE WITH SUPERVISORY POWER MANAGEMENT CONTROL

A method of operating a hybrid electric powertrain (HEP) (100) may include determining, based on a HEP torque demand and a maximum torque limit for a gas turbine engine (108) having a mechanical output coupled to a power shaft (104) of the HEP (100), a target torque for the gas turbine engine (108). The method may also include controlling the gas turbine engine (108) to operate according to a target speed or the target torque. The method may also include, while operating the gas turbine engine (108) 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 (110) having a mechanical output controllably couplable to the power shaft (104) of the HEP (100), and operating the electric machine (110) according to the total torque compensation demand.