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)
11/1993
11/03/1993EP0567801A2 Universal phase match path generator for three-phase power
11/03/1993EP0567773A2 Multiphase switching system and generator system with the same
11/03/1993CN1078072A Multiphase switching system and generator arrangement having such a switching system
11/02/1993US5258700 Generator unit having function of automatically adapting itself to parallel operation
10/1993
10/30/1993CA2095162A1 Method for regulating the voltage at the delivery points in a network for distributing electric energy
10/29/1993CA2093184A1 Multiphase switching system and gnerator arrangement having such a switching system
10/28/1993WO1993021680A1 Electric power accumulating apparatus
10/26/1993US5257180 Controlling system for parallel operation of AC output inverters with restrained cross currents
10/26/1993US5256907 Electric power supply apparatus
10/20/1993EP0565698A1 Reduction of disturbances in a power network
10/20/1993EP0565681A1 Control of power network
10/19/1993US5255202 Digital signal processing method and system, electric power system signal processing system and electric power control system
10/19/1993US5255176 Control circuit for an inverter operable in an individual mode and an interconnection mode
10/19/1993US5254929 Intermediate storage battery charging system
10/14/1993WO1993020610A1 Compact and efficient transformerless power conversion system
10/14/1993WO1993020497A1 Control system and method for the parallel operation of voltage regulators
10/14/1993DE4243205A1 Photovoltaic current feeder for AC network - has inverter with time-discrete proportionally differential control for input voltage
10/14/1993CA2132971A1 Compact and efficient transformerless power conversion system
10/13/1993EP0528016A4 Reactive power compensator
10/13/1993CN2143842Y Automatic regulator for transformer capacity
10/13/1993CN2143841Y Tuning unit of wave-blocking device
10/12/1993US5253179 Compensation for line frequency variation
10/12/1993US5253155 Circuit and method for controlling output current balance between parallel driven PWM-type power inverting units
10/12/1993US5252860 Gas turbine control system having maximum instantaneous load-pickup limiter
10/05/1993US5250775 Electric cooking apparatus adapted for generating high power output containing a battery
09/1993
09/30/1993WO1993018933A1 A method and apparatus for load shedding using a trainline monitor system
09/29/1993EP0562985A1 Power variation method in a load connected to the network
09/23/1993DE4208612A1 Reactive load compensation and/or harmonic elimination device - uses capacitor and control modules which can be stacked to form self-supporting tower
09/23/1993DE4138264A1 Dampfkraftwerk Steam power plant
09/22/1993EP0561255A1 Demand control apparatus and power distribution control system
09/16/1993WO1993018567A1 Electric enery transmission system
09/16/1993WO1993018566A1 Electric energy transmission system
09/16/1993DE4207983A1 Multiphase h.v. network reactor on=off switch - has series-connected varistors connected across series-connected switch-chambers between reactor and network.
09/16/1993CA2117697A1 Electrical energy transmission system
09/15/1993EP0560263A2 Distributed control system
09/15/1993EP0560108A2 Method and run-up device for starting an asynchronous machine
09/14/1993US5245270 Energy storage system
09/14/1993CA2088833A1 Reactor switch
09/08/1993EP0258314B1 Scheme for rapid adjustment of network impedance
09/07/1993US5243225 Load shedding system
09/02/1993WO1993017480A1 Voltage regulation arrangement for parallel transformer operation
09/01/1993EP0557287A1 Electrical energy system.
09/01/1993EP0447392B1 Polyphase power converter with ripple filter choke
09/01/1993CN2141616Y Electricity generating distributing connector
08/1993
08/31/1993US5241256 Method and apparatus for controlling the supply of power to an induction motor to maintain high efficiency under varying load conditions
08/31/1993CA1321822C Circuit breaker warning relay and control accessory
08/25/1993EP0556754A2 Automatically switched power receptacle
08/25/1993EP0556593A1 Gas turbine plant
08/24/1993US5239250 Capacitor-assisted line commutation for induction motor drives
08/24/1993US5239164 Heater control apparatus for printers
08/24/1993CA1321612C Portable crash-survivable kinetic energy storage machine
08/18/1993EP0556013A1 Energy-saving control apparatus and control method for induction motor
08/18/1993CN2140579Y High voltage power factor compensating unit
08/18/1993CN1075384A Energy-saving control apparatus and control method
08/17/1993US5237507 System for developing real time economic incentives to encourage efficient use of the resources of a regulated electric utility
08/11/1993EP0554804A1 Control equipment for high voltage direct current transmission system
08/04/1993CN2139747Y New type comprehensive device for domestic electric appliances
07/1993
07/28/1993EP0552955A1 Electronically tuned matching network using predictor-corrector control system
07/27/1993US5231565 Electrical distribution system having mappable control inputs
07/22/1993WO1993014558A1 Power supply
07/21/1993EP0551683A1 Improved feedback control system for static volt ampere reactive compensator with thyristor controlled reactances
07/21/1993CN1021682C Reactive power compensating system for both high and low voltages
07/20/1993US5229908 Multiple circuit overload protection device
07/20/1993US5229651 Method and apparatus for line power monitoring for uninterruptible power supplies
07/14/1993EP0551116A2 CVCF inverter and method for controlling the same
07/14/1993CN2138359Y Time dividing and electric supply limiting monitor
07/13/1993US5227962 Filter and power factor compensation network
07/13/1993US5227943 Power fault protection for high momentum systems
07/13/1993US5227713 Vernier control system for subsynchronous resonance mitigation
07/07/1993EP0502096A4 Apparatus for a balanced three phase ac power supply in a computer having variable dc loads
07/07/1993CN1021531C Measuring circuit of system separation for disperse disposition type of power source
07/06/1993US5225712 Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operation
06/1993
06/30/1993EP0548324A1 Electrical distribution system having mappable control inputs
06/30/1993CN2137408Y Power-saving unit for asynchronous motor
06/29/1993US5224029 Power factor and harmonic correction circuit including ac startup circuit
06/24/1993WO1993012576A1 Conversion of three-phase line voltages
06/23/1993CN1073554A Self-hold controller for quantitative electric supply during predefined period
06/22/1993CA1319412C Apparatus for parallel operation of triport uninterruptable power source devices
06/16/1993EP0546167A1 Electrical distribution system with improved circuit for multiple circuit breaker control
06/14/1993WO1993012567A1 Thyristor controlled series capacitor vernier control system
06/10/1993WO1993011604A1 Variable speed wind turbine with reduced power fluctuation and a static var mode of operation
06/10/1993WO1993011479A1 Static reactive power compensator
06/02/1993EP0431014B1 Utility metering
06/02/1993EP0404779B1 Process for stabilizing an oscillatory electrical supply network
06/01/1993US5216585 Switching power source device
05/1993
05/27/1993WO1993010334A1 Steam generating power station, process for operating the same and interlinking network
05/19/1993EP0542507A2 Power conversion system
05/19/1993CN2133977Y Column-type integrated control compensating cabinet for voltage and power factor
05/19/1993CN1072295A Power inverting method and system
05/18/1993US5212630 Parallel inverter system
05/18/1993US5212407 Digital phase match discriminator for three-phase power
05/16/1993CA2065687A1 Transformer with cancellation of harmonic currents by non-linear loads
05/13/1993DE4237899A1 Local controller for electrical drive motors - has multi-phase supply with phases coupled to switching units and safety circuit to protect motor
05/12/1993CN2133086Y Reactive automatic compensation controllor
05/12/1993CN2133085Y Gate-control preseter for reactive power compensater
05/05/1993WO1993009587A1 Control of power network
05/05/1993WO1993009586A1 Reduction of disturbances in a power network
05/05/1993WO1993009585A1 Reduction of disturbances in a power network
05/05/1993CN2132325Y Contactless ac synchronous contactor
05/04/1993US5207071 Current control apparatus for air-conditioning system
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