Patent ID: 11894737
Assignee: GE AVIO S.R.L.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC H

Claim 7:
8. A method of operating a rotating field machine, the rotating field machine comprising a stator and a rotor, the rotor being mounted for rotation with respect to the stator, the stator comprising an excitation winding configured to receive an excitation current and a power winding physically decoupled from the excitation winding and configured to accommodate power flow in the rotating field machine, the method comprising:
determining to operate the rotating field machine in a starting mode;
wherein during the starting mode, the method comprises:
energizing the excitation winding and the power winding with a power converter; and
operating the power converter to start the rotating field machine;
determining to operate the rotating field machine in a generating mode;
wherein during the generating mode, the method comprises:
decoupling the power winding from the power converter; and
operating the power converter to manage excitation current flowing in the excitation winding to control a generated power in the power winding;

wherein the excitation winding and the power winding are located in the stator such that the excitation winding and power winding are in electrical quadrature with respect to one another; and
wherein the excitation winding is associated with a d-axis current and the power winding is associated with a q-axis current for the rotating field machine, and wherein the excitation winding is 90° out of electrical phase with respect to the power winding.