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)
09/1982
09/07/1982US4348630 Superconducting VAR control
09/07/1982CA1131309A1 Method and means for damping subsynchronous oscillations and dc offset in an ac power system
08/1982
08/31/1982US4347576 Load management control apparatus with improved duty cycle operation
08/31/1982CA1130860A1 Controllable phase shifter
08/31/1982CA1130858A1 Harmonic cancellation for multi-bridge, three-phase converters
08/24/1982US4346432 Rectifier controller responsive to sensed A.C. voltage signals
08/24/1982US4346421 Fault detector
08/24/1982US4346341 Method and apparatus for automatic voltage reduction control
08/17/1982US4345162 Method and apparatus for power load shedding
08/17/1982CA1129951A1 Efficient, high power battery module; d.c. transformers and multi-terminal d.c. power networks utilizing same
08/10/1982US4344027 Frequency regulator for synchronous generators
08/10/1982US4344025 Motor control system
08/10/1982CA1129510A1 Switching arrangement [circuit] and process to compensate harmonic currents
08/10/1982CA1129493A1 Electric power sharing device
08/04/1982EP0056910A1 Assemblies for generating no-break constant-frequency AC electric power
08/03/1982CA1129048A1 Programmable electronic real-time load controller
08/03/1982CA1128997A1 Circuit control to limit power drain of auxiliary power supply
07/1982
07/28/1982EP0056659A1 Converter control apparatus for parallel connected multi-terminal direct current system
07/27/1982US4342013 Bidirectional power line filter
07/27/1982US4341345 Method and apparatus for power load shedding
07/20/1982CA1128126A1 Circuit arrangement for producing reactive currents rapidly variable in magnitude and curve shape, and control and regulating units therefor
07/14/1982EP0055856A2 Power factor control systems for polyphase induction motors
07/13/1982US4339705 Thyristor switched inductor circuit for regulating voltage
07/13/1982CA1127709A1 Power demand limiting circuit
07/13/1982CA1127708A1 Means for damping mechanical torsional oscillations of an electric a.c. generator
07/07/1982EP0055315A1 Improvements in or relating to energy management
07/07/1982EP0055314A1 Improvements in or relating to energy management
07/06/1982CA1127236A1 Control method and system for a high voltage direct current system
06/1982
06/29/1982US4337401 Adaptive load shedding
06/22/1982US4336462 Electrical load restoration system
06/22/1982CA1126334A1 Multi-channel generator drive system
06/15/1982US4335347 Power combining or dividing arrangements
06/15/1982CA1125855A1 Gain compensation for power factor in line current regulating systems involving reactive power
06/09/1982EP0053383A1 Process for computerized supervision of the total consumption of a group of electricity consumers
06/08/1982US4334264 High voltage direct current transmission apparatus
06/01/1982US4333046 Power factor control of a three-phase induction motor
06/01/1982US4333021 Transient stability enhancement of electric power generating systems by 120-degree phase rotation
05/1982
05/19/1982EP0051903A1 Three phase power factor controller
05/19/1982EP0051780A1 An electric power saver for starting and controlling three phase three wire a.c. induction motors
05/18/1982US4330815 DC Transmission control system
05/18/1982CA1123915A1 Var generator with current sensitive inductance break point
05/18/1982CA1123914A1 Voltage regulator utilizing a static var generator
05/18/1982CA1123909A1 Method and system for the regulation of an asynchronous squirrel-cage generator
05/18/1982CA1123894A1 Hybrid dual voltage transmission system
05/04/1982US4328474 Electrical energy storage type filter
05/04/1982US4328459 Current inrush limiting apparatus
05/04/1982US4328429 Method and apparatus for controlling inverters in parallel operation
05/04/1982CA1123050A1 Load shedding timer for a power management system
04/1982
04/27/1982US4327295 Energy conserving drive system
04/27/1982CA1122655A1 Directional relaying technique
04/27/1982CA1122652A1 Control of high-voltage d.c. transmission systems
04/13/1982US4324987 System and method for optimizing shed/restore operations for electrical loads
04/06/1982CA1121452A1 Dc power transmission control
03/1982
03/30/1982US4322630 Electrical power generating system
03/24/1982EP0047867A1 Circuit for economically using primary-energy converters
03/23/1982US4321582 Data retrieval system and method
03/23/1982US4321478 Auxiliary power supply with kinetic energy storage
03/23/1982US4321477 Energy management apparatus and method
03/23/1982CA1120540A1 Controllable voltage a.c. generator system
03/17/1982EP0047501A1 Multiterminal DC power transmission system
03/16/1982US4320444 Control of a HVT (high voltage D-C transmission) short coupler
03/10/1982EP0047089A1 Method of and apparatus for controlling loads on an electrical power supply
03/03/1982EP0046530A1 Method and device for the optimum use of at least one variable and hard to master power source
02/1982
02/24/1982EP0046408A1 Transient energy control and suppression circuit
02/24/1982EP0046221A1 Thyristor-controlled circuit for rapid compensation of reactive power
02/23/1982US4317076 Power factor control system
02/23/1982US4317049 Frequency adaptive, power-energy re-scheduler
02/16/1982CA1118509A1 Inductance variable
02/10/1982EP0045468A1 Device for bridging short-time network failures in voltage converters with an intermediate link
02/09/1982US4315248 Load control system for standard electric utility meter
02/09/1982US4315161 Electric power sharing device
02/05/1982EP0029447A4 Frequency control for ac systems connected in parallel.
02/03/1982EP0045286A2 Electronic indicator of absorbed current, expressed as a percentage of a prefixed limit, the exceeding of which activates an acoustic alarm
01/1982
01/26/1982US4313081 Line drop compensation device for an electrical distribution system
01/26/1982US4313061 Method and apparatus for supplying electric current to a number of electrical loads
01/26/1982CA1117183A1 High voltage direct current transmission
01/21/1982WO1982000223A1 Device for controlling the voltage and reactance in an electric circuit
01/20/1982EP0044181A1 A.C. electricity power supply system and methods of and apparatus for load control thereon
01/20/1982EP0043972A1 Circuit arrangement for damping power oscillations of synchronous generators in networks
01/19/1982US4311919 Transfer logic control circuitry
01/19/1982US4311253 Low loss stabilizer
01/12/1982US4310771 Method for transferring power in a synchronous mode to a motor bus
01/12/1982US4310770 Demand load control
01/12/1982CA1116253A1 Combiner system
01/12/1982CA1116235A1 Voltage regulator utilizing a static var generator with half period averaging and saturating type firing angle control
01/12/1982CA1116233A1 Electrical convertor
01/06/1982EP0043279A2 Control system for electrical heating/cooling apparatus
01/05/1982US4308911 Residential monitoring and control system
12/1981
12/29/1981US4308575 Power source system
12/29/1981US4308465 Frequency control for paralleled AC systems
12/29/1981US4308463 System and method for operating industrial gas turbine apparatus and gas turbine electric power plants preferably with a digital computer control system
12/29/1981CA1115406A1 Stabilizing equipment for power transmission system
12/22/1981US4307442 Transmission line interconnecting system
12/22/1981US4307331 Hybrid switched-capacitor controlled-inductor static VAR generator and control apparatus
12/22/1981CA1114901A1 Load sharing system
12/22/1981CA1114892A1 Method of taking a pole of a high-voltage d-c transmission station out of service
12/15/1981US4306283 Power factor improving apparatus for power converter
12/08/1981US4305129 System for providing load-frequency control through predictively and _dynamically dispatched gas turbine-generator units
12/08/1981CA1114017A1 System for providing load-frequency control through predictively and dynamically dispatched gas turbine-generator units
11/1981
11/24/1981US4302716 Controllable phase shifter
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