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Title: System and method for smoothing a salient rotor in electrical machines

Abstract

An electrical machine exhibiting reduced friction and windage losses is disclosed. The electrical machine includes a stator and a rotor assembly configured to rotate relative to the stator, wherein the rotor assembly comprises a rotor core including a plurality of salient rotor poles that are spaced apart from one another around an inner hub such that an interpolar gap is formed between each adjacent pair of salient rotor poles, with an opening being defined by the rotor core in each interpolar gap. Electrically non-conductive and non-magnetic inserts are positioned in the gaps formed between the salient rotor poles, with each of the inserts including a mating feature formed an axially inner edge thereof that is configured to mate with a respective opening being defined by the rotor core, so as to secure the insert to the rotor core against centrifugal force experienced during rotation of the rotor assembly.

Inventors:
; ; ;
Issue Date:
Research Org.:
GENERAL ELECTRIC COMPANY, Schenectady, NY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1335658
Patent Number(s):
9,520,751
Application Number:
13/949,406
Assignee:
GENERAL ELECTRIC COMPANY (Schenectady, NY) DOEEE
DOE Contract Number:  
EE0005573
Resource Type:
Patent
Resource Relation:
Patent File Date: 2013 Jul 24
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Raminosoa, Tsarafidy, Alexander, James Pellegrino, El-Refaie, Ayman Mohamed Fawzi, and Torrey, David A. System and method for smoothing a salient rotor in electrical machines. United States: N. p., 2016. Web.
Raminosoa, Tsarafidy, Alexander, James Pellegrino, El-Refaie, Ayman Mohamed Fawzi, & Torrey, David A. System and method for smoothing a salient rotor in electrical machines. United States.
Raminosoa, Tsarafidy, Alexander, James Pellegrino, El-Refaie, Ayman Mohamed Fawzi, and Torrey, David A. Tue . "System and method for smoothing a salient rotor in electrical machines". United States. https://www.osti.gov/servlets/purl/1335658.
@article{osti_1335658,
title = {System and method for smoothing a salient rotor in electrical machines},
author = {Raminosoa, Tsarafidy and Alexander, James Pellegrino and El-Refaie, Ayman Mohamed Fawzi and Torrey, David A.},
abstractNote = {An electrical machine exhibiting reduced friction and windage losses is disclosed. The electrical machine includes a stator and a rotor assembly configured to rotate relative to the stator, wherein the rotor assembly comprises a rotor core including a plurality of salient rotor poles that are spaced apart from one another around an inner hub such that an interpolar gap is formed between each adjacent pair of salient rotor poles, with an opening being defined by the rotor core in each interpolar gap. Electrically non-conductive and non-magnetic inserts are positioned in the gaps formed between the salient rotor poles, with each of the inserts including a mating feature formed an axially inner edge thereof that is configured to mate with a respective opening being defined by the rotor core, so as to secure the insert to the rotor core against centrifugal force experienced during rotation of the rotor assembly.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {12}
}

Patent:

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