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Title: Rotor for a line start permanent magnet machine

Abstract

A rotor comprises laminations with a plurality of rotor bar slots with an asymmetric arrangement about the rotor. The laminations also have magnet slots equiangularly spaced about the rotor. The magnet slots extend near to the rotor outer diameter and have permanent magnets disposed in the magnet slots creating magnetic poles. The magnet slots may be formed longer than the permanent magnets disposed in the magnets slots and define one or more magnet slot apertures. The permanent magnets define a number of poles and a pole pitch. The rotor bar slots are spaced from adjacent magnet slots by a distance that is at least 4% of the pole pitch. Conductive material is disposed in the rotor bar slots, and in some embodiments, may be disposed in the magnet slot apertures.

Inventors:
; ;
Publication Date:
Research Org.:
BALDOR ELECTRIC COMPANY, Forth Smith, AR (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1369046
Patent Number(s):
9,705,388
Application Number:
13/329,814
Assignee:
BALDOR ELECTRIC COMPANY GFO
DOE Contract Number:  
FG36-08GO180132
Resource Type:
Patent
Resource Relation:
Patent File Date: 2011 Dec 19
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Melfi, Mike, Schiferl, Rich, and Umans, Stephen. Rotor for a line start permanent magnet machine. United States: N. p., 2017. Web.
Melfi, Mike, Schiferl, Rich, & Umans, Stephen. Rotor for a line start permanent magnet machine. United States.
Melfi, Mike, Schiferl, Rich, and Umans, Stephen. Tue . "Rotor for a line start permanent magnet machine". United States. doi:. https://www.osti.gov/servlets/purl/1369046.
@article{osti_1369046,
title = {Rotor for a line start permanent magnet machine},
author = {Melfi, Mike and Schiferl, Rich and Umans, Stephen},
abstractNote = {A rotor comprises laminations with a plurality of rotor bar slots with an asymmetric arrangement about the rotor. The laminations also have magnet slots equiangularly spaced about the rotor. The magnet slots extend near to the rotor outer diameter and have permanent magnets disposed in the magnet slots creating magnetic poles. The magnet slots may be formed longer than the permanent magnets disposed in the magnets slots and define one or more magnet slot apertures. The permanent magnets define a number of poles and a pole pitch. The rotor bar slots are spaced from adjacent magnet slots by a distance that is at least 4% of the pole pitch. Conductive material is disposed in the rotor bar slots, and in some embodiments, may be disposed in the magnet slot apertures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 11 00:00:00 EDT 2017},
month = {Tue Jul 11 00:00:00 EDT 2017}
}

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