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Class Information
Number: 322/32
Name: Electricity: single generator systems > Automatic control of generator or driving means > Speed or frequency of generator > Frequency responsive devices or networks
Description: Subject matter wherein a frequency responsive device or network is utilized to produce a control dependent on the speed of frequency for controlling the generator or driving means.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7501798 |
Method for the active damping of the drive train in a wind energy plant |
Mar. 10, 2009 |
| 7215099 |
Method in frequency converter provided with voltage intermediate circuit, and frequency converter |
May. 8, 2007 |
| 7211989 |
Method for acceleration of a shaft run, as well as an apparatus for carrying out the method |
May. 1, 2007 |
| 7170262 |
Variable frequency power system and method of use |
Jan. 30, 2007 |
| 7151359 |
Variable reluctance generator |
Dec. 19, 2006 |
| 7061211 |
Gas turbine generating apparatus |
Jun. 13, 2006 |
| 7030593 |
Multiple path variable speed constant frequency device having automatic power path selection capability |
Apr. 18, 2006 |
| 6992465 |
Generator control circuit having alarm controller |
Jan. 31, 2006 |
| 6933705 |
Generator stator voltage control through DC chopper |
Aug. 23, 2005 |
| 6888263 |
Gas turbine generator |
May. 3, 2005 |
| 6882060 |
Turbine generating apparatus |
Apr. 19, 2005 |
| 6844706 |
Multiple path variable speed constant frequency device having automatic power path selection capability |
Jan. 18, 2005 |
| 6781331 |
Method and apparatus for regulating motor generator output |
Aug. 24, 2004 |
| 6700105 |
Induction heating system and method for internal combustion engine |
Mar. 2, 2004 |
| 6696675 |
Induction heating system for internal combustion engine |
Feb. 24, 2004 |
| 6628103 |
Power factor control apparatus and method |
Sep. 30, 2003 |
| 6628005 |
Single speed turbine generator for different power system output frequencies in power generation systems and associated methods |
Sep. 30, 2003 |
| 6624617 |
Apparatus and method for stabilizing the voltage of an AC generator with variable rotor speed |
Sep. 23, 2003 |
| 6603289 |
Vehicle alternator control device and method |
Aug. 5, 2003 |
| 6479971 |
Method for regulating a three-phase machine without a mechanical rotary transducer |
Nov. 12, 2002 |
| 6392371 |
Universal frequency electrical generator |
May. 21, 2002 |
| 6380734 |
Control element assembly position verification apparatus |
Apr. 30, 2002 |
| 6323625 |
Turbine/alternator on a common shaft with an associated electrical system |
Nov. 27, 2001 |
| 6323624 |
Procedure to connect an asynchronous generator on an alternating current and an electrical connecting for use at this procedure |
Nov. 27, 2001 |
| 6163078 |
Adjustable speed gas turbine power generation apparatus and its operation method |
Dec. 19, 2000 |
| 6163137 |
Rotary induction machine having control of secondary winding impedance |
Dec. 19, 2000 |
| 6124702 |
Step switch cycloconverter utilizing multi-tap armature |
Sep. 26, 2000 |
| 6118187 |
Method for controlling an output of an electrical power plant |
Sep. 12, 2000 |
| 6087753 |
High-efficiency inductor-alternator |
Jul. 11, 2000 |
| 6075348 |
Controller for car generator |
Jun. 13, 2000 |
| 6072303 |
Method and apparatus for compensating a line synchronous generator |
Jun. 6, 2000 |
| 6064186 |
Method for managing the excitation of an automobile alternator by means of a regulator |
May. 16, 2000 |
| 5986438 |
Rotary induction machine having control of secondary winding impedance |
Nov. 16, 1999 |
| 5977645 |
Aircraft secondary power system |
Nov. 2, 1999 |
| 5965949 |
Engine-driven generator |
Oct. 12, 1999 |
| 5929611 |
Light weight rotor and stator with multiple coil windings in thermal contact |
Jul. 27, 1999 |
| 5809047 |
Method for driving a wavelength changeable light source apparatus, such a wavelength changeable light source apparatus and an optical communication system using the same |
Sep. 15, 1998 |
| 5798631 |
Performance optimization controller and control method for doubly-fed machines |
Aug. 25, 1998 |
| 5777459 |
Induction electrical power generating system with variable numbers of poles and excitation frequency |
Jul. 7, 1998 |
| 5773964 |
Output and torque control of an automotive alternator |
Jun. 30, 1998 |
| 5729118 |
Variable speed induction generator-motor with controllable excitation frequency |
Mar. 17, 1998 |
| 5698968 |
Power system stabilizer for generator |
Dec. 16, 1997 |
| 5627744 |
Converter enhanced variable frequency power bus architecture |
May. 6, 1997 |
| 5581168 |
Starter/generator system with DC link current control |
Dec. 3, 1996 |
| 5550457 |
Electric power generating device for vehicles |
Aug. 27, 1996 |
| 5525894 |
Rotary induction generator adapted to be driven by a prime mover for generating electric power |
Jun. 11, 1996 |
| 5504417 |
Engine-driven generator |
Apr. 2, 1996 |
| 5448167 |
Power system control apparatus for reducing power fluctuations |
Sep. 5, 1995 |
| 5418446 |
Variable speed constant frequency synchronous electric power generating system and method of using same |
May. 23, 1995 |
| 5406190 |
Device for generating electrical energy having an A.C. generator coupled to a turbine |
Apr. 11, 1995 |
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