Direct control of air gap flux in permanent magnet machines

Title: Direct control of air gap flux in permanent magnet machines

Abstract

A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.

Inventors:

Hsu, John S ^[1]

Oak Ridge, TN

Issue Date:: 2000-01-01

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

OSTI Identifier:: 872981

Patent Number(s):: 6057622

Assignee:: Lockhead Martin Energy Research Corporation (Oak Ridge, TN)

Patent Classifications (CPCs):: H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

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H - ELECTRICITY H02 - GENERATION H02K - DYNAMO-ELECTRIC MACHINES
H02K21/046 - {with rotating permanent magnets and stationary field winding}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/64 - Electric machine technologies for applications in electromobilty

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DOE Contract Number:: AC05-96OR22464

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: direct; control; air; gap; flux; permanent; magnet; machines; method; apparatus; field; weakening; coils; 35; 44; 45; 71; 72; produce; stators; 34; 49; 63; 64; including; counters; normally; produced; gaps; stator; rotor; 20; 21; 41; 61; carries; poles; modes; operation; introduced; depending; magnitude; polarity; current; particularly; useful; limited; electric; vehicle; drives; generators; vehicle drive; air gap; electric vehicle; permanent magnet; particularly useful; normally produced; air gaps; field weakening; /310/

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                    Hsu, John S. Direct control of air gap flux in permanent magnet machines.  United States: N. p., 2000. 
        Web.

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                    Hsu, John S. Direct control of air gap flux in permanent magnet machines.  United States.

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                    Hsu, John S. Sat .  
        "Direct control of air gap flux in permanent magnet machines".  United States.  https://www.osti.gov/servlets/purl/872981.

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@article{osti_872981,

  title        = {Direct control of air gap flux in permanent magnet machines},

  author       = {Hsu, John S},

  abstractNote = {A method and apparatus for field weakening in PM machines uses field weakening coils (35, 44, 45, 71, 72) to produce flux in one or more stators (34, 49, 63, 64), including a flux which counters flux normally produced in air gaps between the stator(s) (34, 49, 63, 64) and the rotor (20, 21, 41, 61) which carries the PM poles. Several modes of operation are introduced depending on the magnitude and polarity of current in the field weakening coils (35, 44, 45, 71, 72). The invention is particularly useful for, but not limited to, the electric vehicle drives and PM generators.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2000},

  month        = {1}

}

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Works referenced in this record:

Field-weakening performance of brushless synchronous AC motor drives
journal, January 1994

Soong, W. L.
IEE Proceedings - Electric Power Applications, Vol. 141, Issue 6
https://doi.org/10.1049/ip-epa:19941470

High power density electric drive for an hybrid electric vehicle
conference, January 1998

Namuduri, C. S.; Murty, B. V.
APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition
https://doi.org/10.1109/APEC.1998.647666

Adaptive flux weakening control of permanent magnet synchronous motors
conference, January 1998

Sozer, Y.; Torrey, D. A.
Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242)
https://doi.org/10.1109/IAS.1998.732347

Operating Limits of Inverter-Driven Permanent Magnet Motor Drives
journal, March 1987

Sebastiangordon, Tomy; Slemon, Gordon R.
IEEE Transactions on Industry Applications, Vol. IA-23, Issue 2
https://doi.org/10.1109/TIA.1987.4504909

Expansion of operating limits for permanent magnet motor by current vector control considering inverter capacity
journal, January 1990

Morimoto, S.; Takeda, Y.; Hirasa, T.
IEEE Transactions on Industry Applications, Vol. 26, Issue 5
https://doi.org/10.1109/28.60058

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Similar Records

Title: Direct control of air gap flux in permanent magnet machines

Abstract

Citation Formats

Field-weakening performance of brushless synchronous AC motor drives journal, January 1994

High power density electric drive for an hybrid electric vehicle conference, January 1998

Adaptive flux weakening control of permanent magnet synchronous motors conference, January 1998

Operating Limits of Inverter-Driven Permanent Magnet Motor Drives journal, March 1987

Expansion of operating limits for permanent magnet motor by current vector control considering inverter capacity journal, January 1990

Field-weakening performance of brushless synchronous AC motor drives
journal, January 1994

High power density electric drive for an hybrid electric vehicle
conference, January 1998

Adaptive flux weakening control of permanent magnet synchronous motors
conference, January 1998

Operating Limits of Inverter-Driven Permanent Magnet Motor Drives
journal, March 1987

Expansion of operating limits for permanent magnet motor by current vector control considering inverter capacity
journal, January 1990