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:
Jan. 21, 2014
Filed:
Aug. 30, 2011
Ayman Mohamed Fawzi El-refaie, Niskayuna, NY (US);
James Pellegrino Alexander, Niskayuna, NY (US);
Patel Bhageerath Reddy, Schenectady, NY (US);
Manoj Ramprasad Shah, Latham, NY (US);
Ayman Mohamed Fawzi El-Refaie, Niskayuna, NY (US);
James Pellegrino Alexander, Niskayuna, NY (US);
Patel Bhageerath Reddy, Schenectady, NY (US);
Manoj Ramprasad Shah, Latham, NY (US);
General Electric Company, Niskayuna, NY (US);
Abstract
A permanent magnet machine includes a stator having a stator core, a plurality of stator teeth and plurality of stator windings coupled to the stator core. The stator is configured to generate a stator magnetic rotating field when the stator windings are excited with an electric current. The stator magnetic rotating field includes both synchronous sub-harmonic and super-harmonic components. The permanent magnet machine also includes a rotor that is disposed within the stator. The rotor includes a rotor core and a plurality of rotor magnets that are coupled to the rotor core. The rotor magnets are further configured to have a predefined orientation profile such that when the stator windings are excited with an electric current, sub-harmonic and super-harmonic magnetic rotating fields are generated in the rotor magnetic field. The stator sub-harmonic and super-harmonic magnetic rotating fields interact with the rotor sub-harmonic and super-harmonic magnetic rotating fields and produce an aiding torque on in the permanent magnet machine.