Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
10/1985
10/22/1985US4549274 Distributed electric power demand control
10/16/1985EP0158576A1 Method and device for controlling the frequency of an electric current
10/16/1985EP0158007A1 Redundant current supply
10/16/1985EP0157860A1 Controllable risk parameter for device control system.
10/15/1985CA1195381A1 Cord sets with power-factor control
10/10/1985CN85200038U Reactive-voltage general control unit by microcomputer
10/08/1985US4546303 Static reactive-power compensation apparatus
10/08/1985US4546301 Circuit and method for controlling an alternating or three-phase current motor
10/02/1985EP0156396A2 Power converter control apparatus and power converter control method
09/1985
09/26/1985EP0118418A4 Circuit arrangement for compensation of fast changing reactive power, in particular on the point of consumers, which generate harmonics.
09/25/1985EP0155597A1 Device for generating thyristor control pulses to supply an inductance for controlling the reactive power of an electrical network
09/17/1985CA1193656A1 Static var generator
09/10/1985US4540895 Device having thyristors connected in series
09/10/1985US4540889 Method and apparatus for improving the dielectric strength of direct current cable insulation
09/10/1985CA1193351A1 Method and system for interconnecting three-phase synchronous or asynchronous circuits through variable reactive impedances
09/03/1985CA1192984A1 Electrical power supply for the electronic equipments of an acoustic wave long receiver assembly
08/1985
08/28/1985EP0152739A1 Method for the determination of the instant of the reclosure of a power circuit breaker, and apparatus to carrying out this method
08/28/1985EP0152595A1 Control apparatus for D.C. power transmission system
08/27/1985CA1192611A1 Method of static reactive power compensation
08/21/1985EP0152002A1 Phase-shifter
08/21/1985EP0029447B1 Frequency control for ac systems connected in parallel
08/20/1985US4536126 System and method employing a digital computer for automatically synchronizing a gas turbine or other electric power plant generator with a power system
08/14/1985EP0151271A1 HVDC-current coupling station
08/13/1985CA1191896A1 Static var generator for transmission line compensation of subsynchronous resonance
08/13/1985CA1191895A1 Static var generation for transmission line compensation
08/13/1985CA1191891A1 Power conversion equipment
08/07/1985EP0151023A2 Apparatus for controlling power supply to electronic circuitry
08/06/1985US4533857 Electrical energy saving device for motors
08/06/1985US4532761 Load control system and method of combined cycle turbine plants
07/1985
07/23/1985US4531086 Device for stabilizing the voltage of a single- or multi-phase a-c network
07/16/1985US4529926 Power factor regulating method for connection of a capacitor to a line and apparatus embodying the method
07/16/1985US4529925 Reactive power compensating cycloconverter
07/16/1985CA1190617A1 High power resonance filters
07/09/1985US4528457 DC-AC converter for supplementing an AC power source
07/03/1985EP0146726A1 Method and device for the operation of a HVDC transmission system with advanced phase control of the converters
07/03/1985EP0146725A1 Method and device for starting up a high-voltage direct current transmission system for normal operation
07/02/1985US4527071 Modular power plant for the combined production of electrical and thermal energy and installation comprising a plurality of modular power plants
06/1985
06/19/1985EP0144556A1 Reactive power compensator for compensating a reactive current component in an AC network
06/18/1985US4524418 Demand estimation apparatus
06/11/1985US4523249 Alternating current limiting apparatus
06/11/1985US4523248 Safety circuit for a detachable connecting cable
06/04/1985US4521840 D-C Bus current monitoring system
05/1985
05/28/1985US4520274 Method and apparatus for controlling the loads or a plurality of units on a shared source
05/28/1985CA1187964A1 Dumping control method and device for electrical heating installation
05/22/1985EP0142096A2 Method and device for the operation of a high-voltage direct current transmission system with a bypass in case of failure
05/21/1985CA1187555A1 Protective relaying methods and apparatus
05/15/1985EP0141230A1 Three-phase filter circuit plant
05/14/1985US4517634 Power conversion equipment
05/14/1985US4517472 High voltage power supply
05/14/1985US4517468 Diagnostic system and method
05/07/1985US4516198 Control system for DC power transmission
05/07/1985CA1186729A1 Control system for dc power transmission
04/1985
04/25/1985WO1985001851A1 Controllable risk parameter for device control system
04/23/1985US4513243 Core form transformer for selective cancellation of subsynchronous resonance
04/23/1985US4513240 Method and apparatus for selective cancellation of subsynchronous resonance
04/23/1985CA1186018A1 Control device for a converter
04/16/1985US4511807 Electrical generator control system
04/16/1985US4510756 Plant at a local site operating
04/16/1985CA1185650A1 Overhead electric transmission systems
04/09/1985US4510401 Processes and devices for providing a load with an electric AC supply without discontinuity of the AC signal
04/09/1985US4510398 To maintain a building's power consumption
04/09/1985CA1185317A1 Self generative variable speed induction motor drive
03/1985
03/13/1985EP0134167A2 High voltage isolation transformer
03/13/1985EP0134145A2 Electrical systems comprising temperature sensitive device
03/12/1985CA1183895A1 System for reducing the rating requirements of static compensator components at hvdc inverter stations
03/05/1985US4503380 Static reactive compensator
02/1985
02/28/1985WO1985000940A1 Closed loop power factor control for silicon controlled rectifier drilling rigs
02/19/1985US4500795 Electrical timing control switch
02/12/1985US4499385 Recreational vehicle power control system
02/12/1985CA1182518A1 Motor power factor controller with a reduced voltage starter
01/1985
01/30/1985EP0132266A1 Direct current cable protection system
01/29/1985US4496899 Control for a force commutated current source var generator
01/22/1985CA1181482A2 Polyphase induction generator network with power factor control
01/15/1985US4494179 Control device for a converter
01/15/1985US4494010 Programmable power control apparatus responsive to load variations
01/08/1985US4492874 Synchronization fuel control for gas turbine-driven AC generator by use of maximum and minimum fuel signals
01/08/1985CA1180755A1 Method of operating a high voltage direct current transmission system
01/02/1985EP0130002A2 Electronic grounding system for electrical distribution systems
01/02/1985CA1180419A Load control for energy converters
01/02/1985CA1180417A Load control for energy converters
12/1984
12/27/1984EP0129492A2 Method and system for interconnecting synchronous or asynchronous three-phase networks by means of variable reative impedances
12/27/1984EP0129287A1 Control system
12/27/1984EP0129250A2 Converter control system
12/19/1984EP0128796A1 Method of controlling the supply of electric motors, and apparatus for carrying out the method
12/19/1984EP0128182A1 Method and apparatus for automatically setting the demand phase lag input to an induction-motor power factor controller.
12/18/1984US4489386 Device control system
12/18/1984US4489243 Solar powered actuator with continuously variable auxiliary power control
12/12/1984EP0127742A1 Power supply
12/11/1984US4488106 Resettable power limiting apparatus
12/11/1984CA1179404A1 Method of and apparatus for controlling loads on an electrical power supply
12/05/1984EP0126882A2 Switchgear equipment for electrical energy distribution, and method to operate the switchgear equipment
11/1984
11/21/1984EP0125796A1 System and apparatus for monitoring and control of a bulk electric power delivery system
11/13/1984US4482857 Closed loop power factor control for drilling rigs
11/13/1984CA1177879A1 Self-calibrating power factor controller for ac induction motors
10/1984
10/30/1984US4480219 Phase-to-voltage converter
10/24/1984EP0122445A2 Continuous ship power supply from the propulsion network at alternating current ship drive of a vaiable frequency and partial frequency converter
10/17/1984EP0121696A1 Method and circuit arrangement for controlling an alternating current or a three-phase motor
10/16/1984US4477765 Voltage regulator
10/16/1984US4477733 Temperature dependent duty cycler control system
10/09/1984US4476398 Home demand controller