Superconducting motor with multiple winding rotor

This patent describes a poly-phase, self- energizing, air-core superconducting motor. It comprises a stator having three sets of windings; a rotor including a large rotor winding and a small rotor winding, the windings being installed so their axes are orthogonal to each other and connected to form a current loop which is exposed to a magnetic field, the stator and rotor each being made from a superconductive material, and the ratio of turns of the large winding to the small winding being between 5:1 and 10:1; and, means for trapping a maximum number of magnetic flux lines in the loop when the magnetic field is impressed thereon and for thereafter transferring the trapped flux between the large and small winding to run the motor, the loop acting as a perfect conductor whereby no flux change occurs within the loop after the flux lines are trapped