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Browse by Category: Main > Electrical & Energy
Class Information
Number: 310/165
Name: Electrical generator or motor structure > Dynamoelectric > Rotary > A.c. > Synchronous > D.c. excited
Description: Subject matter having an electromagnetic coil which is adapted to be energized by direct current.










Patents under this class:

Patent Number Title Of Patent Date Issued
8648514 Rotary electric motor and blower that uses the same Feb. 11, 2014
8120222 Rotating electrical machine Feb. 21, 2012
7501735 Self-magnetized motor and stator structure thereof Mar. 10, 2009
6940238 Single coil, direct current permanent magnet brushless motor with voltage boost Sep. 6, 2005
6873075 Magnetic bearing control device Mar. 29, 2005
6828702 Brushless DC drive Dec. 7, 2004
6734593 Alternating current generator with unpolarized rotor May. 11, 2004
6442535 Method and apparatus for implementing a low cost, intelligent controller for a switched reluctance machine Aug. 27, 2002
6191517 Brushless synchronous rotary electrical machine Feb. 20, 2001
6133663 Brushless permanent magnet machine Oct. 17, 2000
6078122 Reluctance machine with fractional pitch winding and drive therefore Jun. 20, 2000
6075302 Brushless heteropolar inductor machine Jun. 13, 2000
6066906 Rotating machine having superconducting windings May. 23, 2000
5998899 Magnetic bearing system including a control system for a flywheel and method for operating same Dec. 7, 1999
5973431 Reluctance machine with permanent magnet rotor excitations Oct. 26, 1999
5952759 Brushless synchronous rotary electrical machine Sep. 14, 1999
5923142 Low cost drive for switched reluctance motor with DC-assisted excitation Jul. 13, 1999
5889347 Reluctance machine with fractional pitch winding and drive therefore Mar. 30, 1999
5838087 Reluctance machine Nov. 17, 1998
5798594 Brushless synchronous rotary electrical machine Aug. 25, 1998
5682073 Hybrid excitation type permanent magnet synchronous motor Oct. 28, 1997
5424593 Generator rotor cooling Jun. 13, 1995
5012148 AC machine system with induced DC field Apr. 30, 1991
4948996 Direct cooled bore connector Aug. 14, 1990
4890028 Rotor for a turbo-generator Dec. 26, 1989
4868906 Centrifugally activated switch for a synchronous generating system Sep. 19, 1989
4835431 Transformer and synchronous machine with stationary field winding May. 30, 1989
4764699 Generator stator retention system Aug. 16, 1988
4733117 Reluctance synchro/resolver Mar. 22, 1988
4628245 Multipolar excitation systems Dec. 9, 1986
4577126 Synchronous electric machine with superconductive field windings Mar. 18, 1986
4514652 Liquid cooled high speed synchronous machine Apr. 30, 1985
4496868 Electrical machine Jan. 29, 1985
4488069 Stepping motor Dec. 11, 1984
4471249 Rotary electric machine of the type having a liquid-cooled rotor Sep. 11, 1984
4409502 Self-cooled electrical machine with integrated fan and salient pole rotor Oct. 11, 1983
4328437 Superconductive exciter winding for a turbogenerator rotor May. 4, 1982
4292532 Two-stage electric generator system Sep. 29, 1981
4289989 Brushless exciter rotor mounting Sep. 15, 1981
4268788 A.C. Generator exciting method May. 19, 1981
4246506 Current supplying device for rotor winding of electric machine Jan. 20, 1981
4210836 Permanent magnet generator Jul. 1, 1980
4155019 Coupling assembly for mutually coupling a generator rotor having a superconductive exciter winding and a shaft carrying exciter current leads May. 15, 1979
4091299 Device to electrically connect rotor winding of synchronous electrical machine to exciter May. 23, 1978
3940643 Cryogen-cooled synchronous compensator Feb. 24, 1976











 
 
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