Patent ID: 11929619
Assignee: RAYTHEON COMPANY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 19:
20. An energy storage power source, comprising:
a wound-rotor induction machine (WRIM) including N tertiary windings each wound 360/N and distributed around a first magnetic core and a secondary winding that is wound 360 degrees around a second magnetic core and coupled to a load producing output, said first and second magnetic cores separated by a radial airgap and configure to rotate relative to each other;
N energy storage elements (ESEs);
N bi-directional AC/DC converters that each couple one of the tertiary winding to a respective one of the energy storage elements; and
a WRIM controller,
wherein in a charging state, an external power source is coupled to the WRIM to create a revolving magnetic field to provide the relative rotation between the first and second magnetic cores and to magnetize the tertiary windings to provide power through the AC/DC converters to selectively charge the N ESEs; and
wherein in a discharge state, at least some of the N energy storage elements discharging back through the AC/DC converters are used to excite the tertiary windings to create a revolving magnetic field to magnetize the radial airgap and to individually contribute to a total machine magnetic flux to magnetize the secondary winding to induce an AC output voltage on the secondary winding proportional to the sum of the voltages from the discharging energy storage elements and deliver the energy to the load producing output.