Superconducting rotary motor
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United States of America Patent
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May 7, 2013
Grant Date -
Jan 12, 2012
app pub date -
Jun 28, 2011
filing date -
Jul 6, 2010
priority date (Note) -
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Abstract
A motor and a method of operating the motor are provided. The motor includes a stator including a high-temperature superconductor material at a temperature. 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. The motor further includes a rotor including 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 sum of a non-zero time-invariant magnetic field strength and a 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. 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. In certain embodiments, a motor is provided.
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