Dynamically stabilized hybrid energy storage machinery for power system experiencing torsional oscillations

A hybrid asynchronous induction machine, comprising:

• a stator housing,
• a stator disposed in the stator housing, the stator comprising:
• an input winding for a polyphase AC input signal, the input winding comprising a plurality of phase windings, wherein each phase winding of the input winding comprises a tap connected to a first auxiliary port for the input winding;
• a primary output winding for a first polyphase AC output signal, the primary output winding comprising phase windings in a higher or equal number as the plurality of phase windings of the input winding, wherein each phase winding of the primary output winding is connected to a second auxiliary port;
• and
• a secondary output winding for a second polyphase AC output signal, the secondary output winding comprising phase windings in a higher or equal number of phases as the plurality of phase windings of the input winding, wherein each phase winding of the secondary output winding is connected to a third auxiliary port;
• and
• a rotor having a shaft, and disposed to rotate within a magnetic field of the input winding, the primary output winding, and the secondary output winding, wherein the shaft is connected to a flywheel of an energy storage unit, the rotor comprising:
• a primary rotor winding for a polyphase AC excitation signal, the primary rotor winding comprising phase windings in a same number of poles as the plurality of phase windings of the input winding, wherein each phase winding of the primary rotor winding is connected to one or more primary slip rings of a current collector on the shaft;
• and
• a secondary rotor winding for bidirectional power flow, the secondary rotor winding comprising phase windings in a same or higher number of poles as the plurality of phase windings of the input winding, wherein each phase winding of the secondary rotor winding is connected to one or more secondary slip rings on the shaft,
• wherein the hybrid asynchronous induction machine is configured to receive a compensation signal for cancelling low-frequency electrical resonances.