The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 06, 2021
Filed:
Jun. 27, 2019
The Boeing Company, Chicago, IL (US);
John R. Hull, Sammamish, WA (US);
Shengyi Liu, Sammamish, WA (US);
The Boeing Company, Chicago, IL (US);
Abstract
A system for operation in a motor mode comprises a cryocooler to cool a superconducting coil of a rotor. The system further comprises a flux pump to provide flux to the superconducting coil to produce-a persistent current. Also, the system comprises a main stator coil. An alternating current within the main stator coil generates a rotating magnetic field, which interacts with the persistent current to generate an electromagnetic torque to rotate the rotor. The system also comprises a control stator coil to generate a current at a non-superconducting coil of the rotor. In one or more embodiments, a magnitude, phase, and/or frequency of the rotating magnetic field of the main stator coil and a magnetic field of the non-superconducting coil is varied in comparison a magnitude, phase, and/or frequency of the rotating magnetic field produced by the main stator coil alone to control a speed of the rotor.