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Title: Electric machine

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.

Inventors:
; ; ;
Issue Date:
Research Org.:
GE Global Research, Niskayuna, New York (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531893
Patent Number(s):
8633627
Application Number:
13/220,848
Assignee:
General Electric Company (Niskayuna, NY)
Patent Classifications (CPCs):
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
DOE Contract Number:  
FC26-07NT43122
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011-08-30
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

El-Refaie, Ayman Mohamed Fawzi, Alexander, James Pellegrino, Reddy, Patel Bhageerath, and Shah, Manoj Ramprasad. Electric machine. United States: N. p., 2014. Web.
El-Refaie, Ayman Mohamed Fawzi, Alexander, James Pellegrino, Reddy, Patel Bhageerath, & Shah, Manoj Ramprasad. Electric machine. United States.
El-Refaie, Ayman Mohamed Fawzi, Alexander, James Pellegrino, Reddy, Patel Bhageerath, and Shah, Manoj Ramprasad. Tue . "Electric machine". United States. https://www.osti.gov/servlets/purl/1531893.
@article{osti_1531893,
title = {Electric machine},
author = {El-Refaie, Ayman Mohamed Fawzi and Alexander, James Pellegrino and Reddy, Patel Bhageerath and Shah, Manoj Ramprasad},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {1}
}

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