Patent ID: 8437815
Filing Date: 2013-05-07
Classification: H02K

Abstract:
1. A motor comprising: a stator comprising a high-temperature superconductor material at a temperature, wherein the superconductor material is in a superconducting state in the presence of an external magnetic field below a critical field strength, wherein the critical field strength is a function of the temperature of the superconductor material; a rotor comprising a plurality of permanent magnets and configured to rotate about an axis, wherein each magnet of the plurality of permanent magnets has a magnetic field that interacts with the superconductor material; a first plurality of superconducting coils configured to apply a non-zero time-invariant magnetic field strength to the superconductor material; and a second plurality of superconducting coils configured to apply a time-varying magnetic field strength to corresponding portions of the superconductor material, wherein a sum of the non-zero time-invariant magnetic field strength and the time-varying magnetic field strength cycles between at least a first field strength below the critical field strength for the superconductor material at the temperature and at least a second field strength above the critical field strength for the superconductor material at the temperature, such that the portions of the material cycles between a superconducting state and a non-superconducting state, wherein a time-varying force is applied to the rotor by an interaction of the rotor's magnetic field with the portions of the superconductor material.