Patent ID: 11952139
Assignee: ROLLS-ROYCE CORPORATION
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 7:
8. A method of operating an aircraft electric propulsion system comprising:
monitoring, with a controller circuitry, a voltage and a current of a power supply bus supplying power to a load, the load comprising an electric propulsor configured to provide thrust for an aircraft;
dynamically measuring an altitude of the aircraft;
monitoring, with the controller circuitry, a thrust demand output for thrust of the electric propulsor;
dynamically adjusting, with the controller circuitry, a voltage set point of the voltage of the power supply bus according to dynamic changes in the altitude of the aircraft by dynamically adjusting a weighting applied to the voltage set point according to the thrust demand output;
maintaining, with the controller circuitry, a flow of the current on the power supply bus substantially constant as the altitude of the aircraft changes, by adjustment of the voltage set point;
decreasing, with the controller circuitry, the voltage set point of the power supply bus as the altitude of the aircraft increases; and
increasing, with the controller circuitry, the voltage set point of the power supply bus as the altitude of the aircraft decreases.