Patent ID: 11894742
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 0:
1. An electric machine system comprising:
a first electric machine configured to drive a load drivingly coupled to a first shaft rotatable about an axis, the first electric machine having a plurality of magnetized bi-pole first rotors and a first stator common to the plurality of first rotors, the first stator including a first winding receiving electric power having a first phase, the first rotors being angularly spaced apart around the axis;
a second electric machine configured to drive the load, the second electric machine having a plurality of magnetized bi-pole second rotors and a second stator common to the plurality of second rotors, the second stator including a second winding receiving electric power having a second phase different from the first phase to provide a torque phase offset between the first electric machine and the second electric machine, the second rotors being angularly spaced apart around the axis; and
two or more second shafts, each second shaft connecting one of the first rotors with one of the second rotors, the first rotors being coaxial with and axially spaced apart from respective ones of the second rotors.