Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
03/1996
03/27/1996EP0557287B1 Electrical energy system
03/27/1996CN1119479A Synchronizing device
03/27/1996CN1119360A Energy-saving distributing apparatus
03/27/1996CN1119294A Power supply apparatus having a function of compensating for changes in voltage
03/26/1996US5502340 Measuring process for obtaining a switching command in a rapid changeover device
03/26/1996US5502339 For controlling electric power usage
03/22/1996CA2158419A1 Method and equipment for the variable allocation of static inverters, which are in operation, to at least one load
03/21/1996DE4435351C1 Verfahren zur Regelung eines als Netzstromrichter fungierenden Vierquadrantenstellers Method for regulating a line power converter functioning as a four-quadrant controller
03/21/1996DE4433428A1 Power supply for room air-conditioning plant
03/20/1996EP0702446A2 Method and apparatus for synchronising a synchronous machine
03/20/1996EP0701743A1 Process and device for reducing asymmetric voltages in a three-phase system by means of a static compensator
03/20/1996EP0613517B1 Steam generating power station, process for operating the same and interlinking network
03/19/1996US5500561 Customer side power management system and method
03/19/1996US5500052 Solar photovoltaic power generation device capable of adjusting voltage and electric power
03/14/1996DE19533288A1 Current resonance type SMPS circuit e.g. for TV system
03/13/1996EP0700590A1 Control of electric loads during generator failure in a multi-generator system
03/13/1996CN1031306C Constant voltage and current modulating reactive compensator
03/12/1996US5499178 System for reducing harmonics by harmonic current injection
03/12/1996US5499155 Circuit analyzing system
03/12/1996US5498994 For filtering harmonic current components in a power line of a system
03/12/1996US5498954 Control system and method for the parallel operation of voltage regulators
03/12/1996US5498915 Electronically switched power receptacle
03/05/1996US5497037 Method and apparatus for decoupling of unused power supply pins of a printed circuit board capable of operating at a plurality of predetermined voltages
03/05/1996CA2047805C Power fault protection for high momentum systems
02/1996
02/29/1996WO1996006481A2 Control circuit for cryogenically-cooled power electronics employed in power conversion systems
02/29/1996WO1996006477A1 Converter connection with a balancing circuit
02/29/1996WO1996006310A1 Thermal energy storage system with load leveling
02/29/1996CA2197212A1 Control circuit for cryogenically-cooled power electronics employed in power conversion systems
02/28/1996EP0698309A1 Method of phase-shifting voltages applied to susceptances interconnecting two synchronous polyphase ac networks and a phase-shifting interconnecting apparatus thereof
02/27/1996US5495406 Load control system
02/22/1996WO1996005642A1 Generalized fast, power flow controller
02/22/1996DE4443747C1 Electrical energy network coupling
02/22/1996CA2196668A1 Generalized fast, power flow controller
02/21/1996EP0697120A1 Management equipment for generators of electrical energy
02/20/1996US5493155 Electric power supply system
02/20/1996CA2071116C Electrical power distribution busway and bus plug arrangement
02/08/1996WO1996003683A1 Transmission line power controller with a continuously controllable voltage source responsive to a real power demand and a reactive power demand
02/08/1996DE19504271C1 Impedance measuring system for AS network
02/07/1996EP0500789B1 An uninterrupted power supply system having improved power factor correction circuit
02/07/1996CN1116330A Maximum demand power control apparatus
02/06/1996US5489838 Method and apparatus for generating a synchronizing signal for a controlled series compensator
02/01/1996WO1996002969A1 Hybrid filter for reducing distortion in a power system
02/01/1996DE19526359A1 Active filtering device for distorted harmonic-containing voltage waveform of current supply system
01/1996
01/31/1996CN2218987Y Automatic control module for generator parallel operation
01/30/1996US5488532 System of protection for electric power distribution failures
01/30/1996US5488269 Multi-resonant boost high power factor circuit
01/30/1996CA2056383C A system for discharging electrical power from a high-voltage direct current line
01/25/1996WO1996002025A1 Guide system for a power station
01/24/1996EP0693218A1 Device for assembling power capacitors
01/23/1996US5487016 Apparatus for generating a signal representative of total harmonic distortion in waveforms of an A/C electrical system
01/18/1996WO1996001517A1 Hvdc transmission
01/18/1996WO1996001516A1 Three-phase reactive-power controller
01/17/1996EP0692927A2 Improved printed circuit board and method
01/17/1996EP0692857A1 Switching means for a reactive power-compensation device provided with capacitors
01/16/1996US5485545 Control method using neural networks and a voltage/reactive-power controller for a power system using the control method
01/16/1996US5485075 Reactive power compensating apparatus and method for reducing in switching loss in steady state operation thereof
01/16/1996CA2082914C Controller for controlling operation of at least one electrical load operating on an ac supply, and a method thereof
01/14/1996CA2127928A1 Electrical load controller to regulate power consumption
01/11/1996WO1996000998A1 Apparatus and method for regulating a power line using frequency domain self-synchronization control
01/11/1996WO1996000936A1 Capacitor polarity-based var correction controller for resonant line conditions and large amplitude line harmonics
01/10/1996EP0691003A1 Low cost active power line conditioner
01/10/1996EP0604540B1 Measuring process for obtaining a switching command in a rapid changeover device
01/09/1996US5483462 In an electrical power system
01/09/1996US5483408 In an electrical system
01/09/1996US5483142 Precharge circuit having microprocessor-based firing angle control circuitry
01/09/1996CA2031712C Device for suppressing voltage fluctuation and higher harmonics
01/04/1996DE4423033A1 Dreiphasiger Blindleistungssteller Three-phase reactive power controllers
01/04/1996DE4421914A1 Device for improving performance rating of electrical load
01/03/1996EP0689732A1 Process and regulating arrangements for d.c. transmission
01/03/1996EP0689730A1 Synchronizing device
01/03/1996EP0689729A1 Process and regulating arrangement for d.c. transmission and a regulating device
01/03/1996EP0689689A1 Energy saving power control system
01/02/1996US5481140 Adapted to shut off a power supply to loads
12/1995
12/28/1995WO1995035532A1 Circuit arrangement for decreasing the energy consumption and for protecting of a variable loaded asynchronous motor
12/27/1995EP0689272A1 Control equipment for a series capacitor connected into an electric power line
12/26/1995US5479358 Urban energy system for controlling an energy plant supplying energy to a community
12/26/1995US5479332 System avoiding regulator detachments in quasi-steady operation of ADC power transmission line
12/26/1995US5479117 Hybrid data processing system including pulsed-power-supply CMOS circuits
12/26/1995CA2104032C Power conversion control apparatus
12/26/1995CA2063643C Magnetoelectric generating system
12/21/1995DE4420853A1 Matching conductors to reduce or remove interference
12/20/1995EP0688095A2 Variable speed generator-motor apparatus capable of improving accuracy of power system
12/20/1995EP0688081A1 Method and arrangement for a d.c. transmission
12/20/1995EP0688080A1 Management device for electrical power-installation
12/20/1995EP0687395A1 Process for preventing damage to numerically controlled machines in the event of a power failure
12/19/1995US5476293 Electric energy storage and distribution system of differential distribution type
12/19/1995CA2075351C Energy-saving control apparatus and control method for induction motor
12/14/1995WO1995034119A1 Structure and method for performing active injection mode filtering on an ac power system
12/13/1995EP0686103A1 Electrical arrangement
12/13/1995CN2215156Y Powerfactor automatic regulating controller
12/12/1995US5475314 Method for estimating natural frequency of distribution system
12/06/1995EP0685919A1 Electronic harmonics compensator
12/06/1995CN1113095A HVDC Transmission
12/05/1995US5473533 Method and apparatus for efficient phase and frequency coherence locking optimized for digital systems
12/05/1995US5473528 Parallel connection of different types of AC power supplies of differing capacities
12/05/1995US5473255 Apparatus for estimating natural frequency of distribution system
11/1995
11/30/1995WO1995032537A1 Control of an installation for transmission of high-voltage direct current
11/29/1995EP0684694A2 Power factor control of pulse-width modulated inverter supplied permanent magnet motor
11/29/1995EP0684679A1 Method for reducing waveform distortion in an electrical utility system and circuit for an electrical utility system
11/29/1995CN1112742A Intelligent quantitative controller for demand of electricity