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Class Information
Number: 322/59
Name: Electricity: single generator systems > Generator control > With excitation winding and/or circuit control
Description: Subject matter wherein the generator is controlled by controlling an excitation winding or an excitation winding circuit.










Sub-classes under this class:

Class Number Class Name Patents
322/61 Alternating current excitation 27
322/69 Circuit interruption 20
322/75 Control by circuit impedance 14
322/72 Control by electric space discharge 11
322/63 Plural excitation windings 36
322/62 Plural sets of poles type of generator 13
322/86 Plural sources of excitation voltage 19
322/67 Series-wound generator 1
322/68 Short circuiting of field winding 22
322/60 Substitute or auxiliary starting source of excitation 32
322/71 Variable length field winding 3


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8686581 Method for operating a wind turbine in the event of the occurrence of a grid fault with a voltage drop and such a wind turbine Apr. 1, 2014
8680819 Field winding type rotary electric machine Mar. 25, 2014
8624563 Static exciter of a field winding and method for operating the same Jan. 7, 2014
8493038 Vehicle-use power generation control apparatus and vehicle-use power generation control system Jul. 23, 2013
8487592 Circuit and method for de-energizing a field coil Jul. 16, 2013
8456138 Programmable high voltage energy saving system Jun. 4, 2013
8432137 Power generating system with flux regulated generator Apr. 30, 2013
8423160 Systems and methods for controlling electronic circuitry with separated controllers Apr. 16, 2013
8378641 Electric power generating system with boost converter/synchronous active filter Feb. 19, 2013
8334680 Field winding type generator-motor Dec. 18, 2012
8319481 Pole shifting generator Nov. 27, 2012
8310212 Control device for automobile battery-charging generator Nov. 13, 2012
8305049 Starter voltage reducing synchronous machine Nov. 6, 2012
8299642 Wind power generation system Oct. 30, 2012
8289005 Field transient suppression system and method Oct. 16, 2012
8264209 Method of and apparatus for operating a double-fed asynchronous machine in the event of transient mains voltage changes Sep. 11, 2012
8207710 Regulator adapted to various vehicle alternators Jun. 26, 2012
8198872 Starter-generator with improved excitation Jun. 12, 2012
8198871 Time lag reduction circuit for alternating current generator and electric drive machine using same Jun. 12, 2012
8193782 Abnormality detection apparatus Jun. 5, 2012
8164313 Power generation controlling device for vehicles, which device has bi-directional communication function with external control unit Apr. 24, 2012
8134345 Cryogenic exciter Mar. 13, 2012
8129957 Alternator voltage regulator with maximum output limiting function Mar. 6, 2012
8085004 Generator with quadrature AC excitation Dec. 27, 2011
8072190 Permanent magnet generator control Dec. 6, 2011
8072191 Shorted rotating diode detection and protection Dec. 6, 2011
8044624 Load control apparatus and method for processing diagnosis signal for the same Oct. 25, 2011
8039982 Method for operating a wind turbine, coil arrangement for an electric machine, and controller for a wind turbine Oct. 18, 2011
8026699 Frequency converter for a double-fed asynchronous generator with variable power output and method for its operation Sep. 27, 2011
8018206 Excitation device for an electric machine Sep. 13, 2011
8008895 Static exciter system for a generator and method of operation Aug. 30, 2011
8008896 Output control apparatus of generator Aug. 30, 2011
7990112 Adaptive field control of a variable frequency synchronous generator Aug. 2, 2011
7969122 Pole count changing generator Jun. 28, 2011
7969123 Exciter assemblies Jun. 28, 2011
7952331 Self-excited controlled frequency generator system with bi-directional converter May. 31, 2011
7928592 Wind turbine with parallel converters utilizing a plurality of isolated generator windings Apr. 19, 2011
7915868 Method of synchronizing a turbomachine generator to an electric grid Mar. 29, 2011
7915869 Single stage starter/generator with rotor quadrature AC excitation Mar. 29, 2011
7911188 Power generation control apparatus of a rotating electrical machine for a vehicle Mar. 22, 2011
7884581 Active damping for synchronous generator torsional oscillations Feb. 8, 2011
7880448 Fault clearing method for permanent magnet machines Feb. 1, 2011
7847526 System and method for controlling torque ripples in synchronous machines Dec. 7, 2010
7816801 Speed sensing circuit for a wind turbine generator Oct. 19, 2010
7808215 Active damping for synchronous generator torsional oscillations Oct. 5, 2010
7759909 Generator control circuit Jul. 20, 2010
7742855 Method for operating a motor vehicle alternator-starter Jun. 22, 2010
7705568 Power-generator control apparatus for addressing occurrence of voltage transient Apr. 27, 2010
7692414 Regenerative static excitation system for superconducting rotor Apr. 6, 2010
7687928 Dual-structured aircraft engine starter/generator Mar. 30, 2010

1 2 3 4 5










 
 
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