Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02J - Circuit arrangements or systems for supplying or distributing electric power; Systems for storing electric energy › H02J 3 - Circuit arrangements for ac mains or ac distribution networks
Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
07/1980
07/09/1980EP0013005A1 D.C. transformers and multi-terminal D.C. power network utilizing the same
07/08/1980US4211933 Electrical load restoration method
07/01/1980US4210956 Method and system of controlling high voltage direct current power transmission plants
07/01/1980US4210860 VAR Generator with current sensitive inductance break point
06/1980
06/26/1980WO1980001340A1 Hybrid dual voltage transmission system
06/25/1980EP0012742A1 Multiple-bridge, three-phase converter arrangement including voltage harmonics cancellation
06/25/1980EP0012219A1 Method and apparatus for adding and removing in accordance with the load a plurality of parallelly working current generator units in a current distribution system
06/24/1980US4209831 Method and apparatus for controlling an interconnected distribution system which includes a jointly owned generating unit
06/24/1980US4209757 Circuit for compensating harmonic currents in an electric consumer arrangement
06/17/1980US4208593 Method and system of selective disconnection of loads from a power source
06/11/1980EP0011807A1 Circuitry for damping power oscillations in networks
06/10/1980US4207474 Sequential two tone detector
06/10/1980CA1079356A1 System and method for limiting energy consumption
06/03/1980US4206395 Harmonic eliminating apparatus
05/1980
05/27/1980US4205368 Method for the transmission of DC current between at least one rectifier station and several inverter stations
05/27/1980US4205235 Automatic electrical load matching device for wind generators
05/27/1980CA1078457A1 Demand schedule controller
05/20/1980US4204264 Harmonic cancellation for multi-bridge, three-phase converters
05/20/1980US4204151 Static VAR generator with non-linear frequency dependent dynamic gain adjuster
05/20/1980US4204150 Apparatus and method for regulating the power factor in an electrical distributing-network line
05/20/1980US4204147 Power transfer apparatus
05/20/1980US4204129 Capacitance-compensated cable
05/20/1980US4204127 Load regulation as part of an adaptive priority determination power demand control system
05/01/1980WO1980000899A1 Circuit control to limit power drain of auxiliary power supply
04/1980
04/30/1980EP0010502A1 Variable inductance
04/29/1980US4200907 Method of taking a pole of a high-voltage d-c transmission station out of service
04/29/1980CA1076647A1 Equipment with controllable reactance
04/22/1980US4199804 Method and apparatus for controlling the alternating voltage of a static convertor
04/22/1980US4199798 Phase balance monitoring system incorporating voltage and phase sequence monitoring
04/17/1980WO1980000767A1 Circuit comprising a current divider for inverters working in parallel
04/15/1980CA1075820A1 Power supply interruption detecting circuit
04/08/1980US4197468 Electrical demand controller
04/08/1980CA1075307A1 Power factor control system for ac induction motors
03/1980
03/25/1980US4195334 High-voltage DC transmission system and method
03/18/1980CA1073974A1 Device for connecting tuned power transmission line to a.c. network
03/18/1980CA1073972A1 Energy management system
03/18/1980CA1073971A1 Generator monitoring circuit
03/11/1980CA1073530A1 Static convertor plant
03/04/1980US4191992 Method of and apparatus for enabling soft-failure of modular power converter systems, including RF generator systems, embodying switching components in the power conversion
03/04/1980CA1073047A1 Geophysical energy source utilization circuit
02/1980
02/19/1980CA1072198A1 Automatic transfer control device and voltage sensor
02/19/1980CA1072197A1 Automatic transfer control device and frequency monitor
02/12/1980US4188573 Static VAR generator with time-related-error minimizer
02/12/1980CA1071706A1 Sealed dc power converting station
02/06/1980EP0007728A1 Load shedding timer for a power management system
01/1980
01/29/1980CA1070814A1 Phase sequence correcting system for three-phase ac power
01/29/1980CA1070752A1 High voltage electrical apparatus
01/23/1980EP0007087A1 Programmable control for load management
01/15/1980CA1070001A1 Control system to check power consumption of an electric distribution network
01/08/1980CA1069583A1 High speed control of reactive power for voltage stabilization in electric power systems
01/01/1980US4181950 Adaptive priority determination power demand control method
12/1979
12/25/1979US4180745 Power regulating supply system for AC electrical loads
12/25/1979US4180744 Energy management system
12/25/1979CA1068824A Root mean square detector
12/18/1979US4179729 Rotary electric machine and power conversion system using same
12/18/1979CA1068337A1 Waste energy source utilization circuit and method
12/18/1979CA1068334A1 Load controlling means
12/04/1979US4177508 Apparatus for balancing an asymmetrical load
12/04/1979US4177414 Controllable voltage A.C. generator system
12/04/1979US4177388 Programmable control for load management
11/1979
11/20/1979CA1066770A1 Load selective power systems
11/13/1979US4174497 Circuit and method for controlling reactive load currents of a three-phase system
11/13/1979CA1066360A1 Remote control systems for electrically operated loads
11/06/1979US4173780 Method and apparatus for controlling the real and reactive power behavior of a high voltage D.C. transmission (HDT) system
10/1979
10/31/1979EP0005109A2 Installation and power supply for beacon flash lamps
10/31/1979EP0005107A1 Device and method for diverting energy from a capacitive source with shunt switching regulation
10/30/1979CA1065401A1 Power series tapping from a dchv transmission line
10/30/1979CA1065259A1 Remote control power supply for cable transmission line with repeaters suubmitted to external electric fields
10/23/1979US4172234 Static VAR generator compensating control circuit and method for using same
09/1979
09/19/1979EP0004199A1 Method and apparatus for supplying electric current to a number of electrical loads
09/18/1979US4168491 Energy demand controller and method therefor
09/11/1979US4167679 Floating set point control circuit and method for use with electrical load control systems
09/06/1979WO1979000664A1 Demand metering system
09/04/1979CA1061861A1 Protection system and method for high voltage direct current transmission system
08/1979
08/21/1979CA1060980A1 Demand controller
08/21/1979CA1060946A1 Stroboscopie beacons fed by a capacitive source___
08/14/1979US4164661 Load sharing system
07/1979
07/24/1979US4162526 Failsafe primary power control apparatus for systems using computer controlled power sequencing
07/24/1979US4162442 Capacitor equipment
07/17/1979US4161661 System for automatically switching transformer coupled lines
07/17/1979CA1058703A1 Parallel redundant and load sharing regulated ac system
07/11/1979EP0003010A1 Method and apparatus for limiting the power demand in heating-ventilation-air conditioning
07/11/1979EP0002981A1 Method and apparatus for regulating the voltage of an electrical generator
07/10/1979US4161028 Electric demand control system
07/10/1979US4160917 Energy conserving transformer power supply system
07/03/1979US4160153 Duty cycle shared proportional temperature control
06/1979
06/19/1979CA1056887A1 Power control system for independent generators
06/12/1979CA1056451A1 Converter control apparatus for ac-dc parallel power transmission system
05/1979
05/29/1979CA1055569A1 Cycloconverter for compensating reactive power in a three-phase network
05/22/1979US4156212 Combiner system
05/22/1979US4156176 Voltage regulator utilizing a static var generator
05/22/1979US4156174 Phase-angle regulator
05/22/1979CA1157516A Capacitive energy source extraction system with shunt switching control
05/22/1979CA1055117A1 Correction system for regulating the power factor of an electrical distribution network
05/22/1979CA1055116A1 Reactive power compensator for arc furnaces
05/22/1979CA1055111A1 System for extracting energy from a capacitive source, with shunt switched regulation
05/08/1979US4153936 Energy management system
05/01/1979US4152605 Automatic load control system and method for a power distribution network
05/01/1979CA1053792A1 Automatic transfer switch
04/1979
04/24/1979US4151585 Series tapping of an HVDC transmission line
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