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 Co., Schenectady, NY (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1335658
- Patent Number(s):
- 9520751
- Application Number:
- 13/949,406
- Assignee:
- GENERAL ELECTRIC COMPANY (Schenectady, NY)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- 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 = {Tue Dec 13 00:00:00 EST 2016},
month = {Tue Dec 13 00:00:00 EST 2016}
}
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