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:
-
- Oak Ridge, TN
- Issue Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1037750
- Patent Number(s):
- 8110961
- Application Number:
- 12/466,212
- 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., 2012.
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/1037750.
@article{osti_1037750,
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 Feb 07 00:00:00 EST 2012},
month = {Tue Feb 07 00:00:00 EST 2012}
}
Works referenced in this record:
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.