Permanent-magnet-less machine having an enclosed air gap
Abstract
A permanent magnet-less, brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by an alternating current. An uncluttered rotor disposed within the magnetic rotating field is spaced apart from the stator to form an air gap relative to an axis of rotation. A stationary excitation core spaced apart from the uncluttered rotor by an axial air gap and a radial air gap substantially encloses the stationary excitation core. Some permanent magnet-less, brushless synchronous systems include stator core gaps to reduce axial flux flow. Some permanent magnet-less, brushless synchronous systems include an uncluttered rotor coupled to outer laminations. The quadrature-axis inductance may be increased in some synchronous systems. Some synchronous systems convert energy such as mechanical energy into electrical energy (e.g., a generator); other synchronous systems may convert any form of energy into mechanical energy (e.g., a motor).
- Inventors:
- Issue Date:
- Research Org.:
- ORO (Oak Ridge Office, Oak Ridge, TN (United States))
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1083450
- Patent Number(s):
- 8390168
- Application Number:
- 13/360,889
- Assignee:
- UT-Battelle, LLC (Oak Ridge, TN)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
- DOE Contract Number:
- AC05-00OR22725
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Hsu, John S. Permanent-magnet-less machine having an enclosed air gap. United States: N. p., 2013.
Web.
Hsu, John S. Permanent-magnet-less machine having an enclosed air gap. United States.
Hsu, John S. Tue .
"Permanent-magnet-less machine having an enclosed air gap". United States. https://www.osti.gov/servlets/purl/1083450.
@article{osti_1083450,
title = {Permanent-magnet-less machine having an enclosed air gap},
author = {Hsu, John S.},
abstractNote = {A permanent magnet-less, brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by an alternating current. An uncluttered rotor disposed within the magnetic rotating field is spaced apart from the stator to form an air gap relative to an axis of rotation. A stationary excitation core spaced apart from the uncluttered rotor by an axial air gap and a radial air gap substantially encloses the stationary excitation core. Some permanent magnet-less, brushless synchronous systems include stator core gaps to reduce axial flux flow. Some permanent magnet-less, brushless synchronous systems include an uncluttered rotor coupled to outer laminations. The quadrature-axis inductance may be increased in some synchronous systems. Some synchronous systems convert energy such as mechanical energy into electrical energy (e.g., a generator); other synchronous systems may convert any form of energy into mechanical energy (e.g., a motor).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 05 00:00:00 EST 2013},
month = {Tue Mar 05 00:00:00 EST 2013}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Dynamo-Electric Machine
patent, June 1957
- Bekey, Andrew; Robinson, Horace M.
- US Patent Document 2796542
Claw pole motor stator
patent, November 2006
- Seki, Masahiro; Imai, Nobuyuki; Aoki, Shin
- US Patent Document 7,135,802
Automotive alternator including annular core having protrusions and recesses alternately formed on its outer surface
patent, November 2010
- Isogai, Nobuo
- US Patent Document 7,834,512
Dynamoelectric Machine
patent, June 1961
- Bertsche, Ralph H.; Gegenheimer, Eldred E.
- US Patent Document 2987637
Claw-Tooth Rotor Dynamoelectric Machine
patent, May 1972
- Wagner, Paul D.; Keuper, JOhn J.
- US Patent Document 3663846
Synchronous machine
patent, July 1999
- Naito, Kiwamu; Matsubara, Satoru; Sekiyama, Tokuzou
- US Patent Document 5,929,541
Simplified hybrid-secondary uncluttered machine and method
patent, May 2005
- Hsu, John S.
- US Patent Document 6,891,301
Rotor of synchronous machines
patent, February 1981
- Sento, Hiroshi; Tanabe, Shoji; Shimozu, Tadao
- US Patent Document 4,250,424
Brushless Motor/Alternator
patent, December 1969
- MacKallor, Jr., DeWitt C.
- US Patent Document 3484635
Five-phase interior permanent magnet motor with low torque pulsation
conference, January 2005
- Parsa, L.; Toliyat, H. A.
- Fourtieth IAS Annual Meeting. Conference Record of the 2005 Industry Applications Conference, 2005.
Method for providing slip energy control in permanent magnet electrical machines
patent, November 2006
- Hsu, John S.
- US Patent Document 7,134,180
Permanent-Magnet-Less Machine Having an Enclosed Air Gap
patent-application, September 2009
- Hsu, John S.
- US Patent Application 12/466212; 20090218895
Electric machine for hybrid motor vehicle
patent, September 2007
- Hsu, John S.
- US Patent Document 7,270,203
Noise reduction arrangement in a claw-type dynamo electric machine, particularly multi-phase automotive-type a-c generator
patent, August 1978
- Thiele, Hubertus
- US Patent Document 4,110,642
Rotary electric machine having annular rotor core with slits
patent, August 2003
- Kusase, Shin
- US Patent Document 6,608,424
Rotary electric machine having cylindrical rotor with alternating magnetic poles thereon
patent, January 2004
- Kusase, Shin
- US Patent Document 6,680,557
Hybrid-secondary uncluttered permanent magnet machine and method
patent, December 2005
- Hsu, John S.
- US Patent Document 6,977,454