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)
12/1998
12/23/1998WO1998058270A1 Battery testing and classification
12/23/1998WO1998043336A3 A plant for transmitting electric power including vsc (voltage source converter) and dc/dc converter
12/23/1998EP0886371A1 Method to control parallel connected converters to supply an asynchronous motor and corresponding circuit
12/23/1998EP0886362A1 Power distribution control system
12/23/1998EP0885477A1 Balancer executed with z-connected windings
12/23/1998EP0885376A1 Optically programmed encoder apparatus and methods
12/23/1998CN1202950A Method and device for rapid output adjustment of a power-generating facility
12/23/1998CN1202752A Ground fault protecting apparatus and method for solar power generation and solar power generation apparatus using apparatus and method
12/23/1998CA2294144A1 Battery testing and classification
12/22/1998US5852554 Power inverter having three or more parallel driven PWM-type power inverting units
12/17/1998WO1998057412A1 A plant for transmitting electric power including bidirectionally controlled thyristors (bct)
12/17/1998WO1998057411A1 A plant for transmitting electric power and a method for changing the direction of power transmission in such a plant
12/17/1998WO1998057410A1 A method for reconstruction of a plant for transmitting electric power as well as such a plant
12/17/1998WO1998057409A1 A plant for transmitting electric power including bidirectionallycontrolled thyristors (bct)
12/17/1998WO1998057408A1 Harmonic compensation apparatus and methods
12/17/1998WO1998057244A2 Method and apparatus for power output control and correction
12/16/1998EP0884833A1 Variable speed wind turbine
12/16/1998EP0884821A1 Arrangement for power distribution, in particular for an aircraft
12/16/1998EP0884817A2 Ground fault protecting apparatus and method for solar power generation and solar power generation apparatus using the apparatus and method
12/10/1998WO1998055339A1 A plant for feeding alternating voltage
12/10/1998DE19722898A1 Ferngesteuerte Überwachung eines elektronischen Überstromauslösers Remote monitoring of an electronic overcurrent release
12/09/1998EP0882321A1 A device for control of controller equipment for the purpose of damping of oscillations in a power line
12/08/1998CA2082553C Power conversion system
12/03/1998WO1998054810A1 Remote-control monitoring of an electronic overcurrent trip
12/02/1998EP0881737A2 Electric charge transfer
12/02/1998EP0881733A1 Valve overcurrent protection in electric power transmission plant
12/02/1998CN2299413Y Reactive-load compensation appts. for power transmission network
12/02/1998CN1200589A Photovoltaic power generation apparatus
12/02/1998CN1200587A Directly continuously and quickly adjusting type main loop structure for series compensation capacitive reactance
12/02/1998CN1200349A Apparatus for controlling rescue operations and for improving power efficiency
12/01/1998US5844791 Single-phase harmonic filter system
12/01/1998US5844789 Impedence regulator to block power line interference
12/01/1998US5844327 Apparatus and method for optimizing power distributed in a broadband signal system
12/01/1998US5844326 Managed electrical outlet for providing rank-ordered over-current protection
12/01/1998CA2143264C Zero phase sequence current filter with adjustable impedance
11/1998
11/25/1998EP0879497A1 Dynamic mechanically switched damping system and method for damping power oscillations using the same
11/24/1998US5841267 Power flow control with rotary transformers
11/19/1998CA2237809A1 Computer system, apparatus and method for calculating demand usage
11/18/1998EP0878850A2 Photovoltaic power generation apparatus
11/18/1998EP0878051A1 Converter equipment
11/18/1998CN2297813Y Excess voltage protector for reactive compensator
11/18/1998CN1040820C High voltage fast cross-substation electric power supplying apparatus
11/12/1998DE19813364A1 Energy supply for control system
11/12/1998DE19718033A1 Power supply system to equalise temporary load peaks in grid serving private and industrial consumers
11/12/1998DE19717492A1 Optimising efficiency of hydroelectric power station
11/11/1998EP0877482A1 Electronically tuned matching network using predictor-corrector control system
11/11/1998EP0876700A1 Intelligent power supply with staged loading capability
11/11/1998EP0687395B1 Process for preventing damage to numerically controlled machines in the event of a power failure
11/10/1998US5835383 System-interconnected generator for converting solar energy to AC power
11/10/1998US5834922 For connection to a power system
11/10/1998US5834855 Maximum demand power control apparatus
11/04/1998EP0783789B1 Generalized fast, power flow controller
11/03/1998US5831410 Apparatus used with AC motors for eliminating line voltage reflections
10/1998
10/29/1998WO1998048498A2 Energy management method and apparatus
10/29/1998WO1998048335A1 Energy control system with remote switching
10/28/1998CN1197318A Shunt capacitor generating method of a. c. generator
10/27/1998US5828576 Power monitor apparatus and method with object oriented structure
10/22/1998WO1998030912A3 Method and apparatus for applying real time pricing and usage rates in a network
10/22/1998DE19737590C1 Voltage supply quality improvement method e.g. for automated processes
10/22/1998DE19716645A1 Power transmission method used between fluctuating current generator and supply network
10/21/1998EP0872942A2 System for stabilising a power supply network
10/21/1998EP0872941A2 Method for central reactive power compensation in a single phase or polyphase AC network and device for carrying out such method
10/21/1998CN2295288Y Reactive power automatic compensating box for civil buildings
10/21/1998CN2295287Y Automatic switching device for outdoor line compensating capacitor
10/21/1998CN2295286Y Contact-less reactive power automatic compensating controller
10/21/1998CN2295285Y Random power-less compensator
10/20/1998US5825162 Electric power flow controller
10/14/1998EP0871272A1 Method for determining the energy saving potential of an electrical energy consuming system and method for operating an electrical energy consuming system
10/14/1998EP0870354A1 Load distribution and management system
10/14/1998CN2294539Y High voltage suppression filter
10/13/1998US5821642 Arc prevention circuit for a mechanical switch
10/13/1998US5821636 For use in computer systems
10/08/1998DE19813389A1 Safety control circuit e.g. for electrical relay
10/07/1998EP0869599A2 Method and apparatus for detecting out-of-step in electric power system
10/07/1998EP0647365B1 Power controller device
10/07/1998CN1195428A Method and device for compensation of reactive power
10/07/1998CN1195219A Energy-saving value-added power station
10/06/1998US5818208 Flicker controllers using voltage source converters
10/06/1998US5818126 For a multi-phase transmission line
10/01/1998WO1998043342A1 Voltage-stiff converter with high voltage cables of different poles arranged close to each other
10/01/1998WO1998043336A2 A plant for transmitting electric power including vsc (voltage source converter) and dc/dc converter
10/01/1998CA2283661A1 A plant for transmitting electric power, including vsc-converter and dc/dc-converter
09/1998
09/30/1998EP0868016A1 Electric power transmission plant, including voltage source converter (VSC) with additional phase leg
09/30/1998EP0868004A1 A plant for transmitting electric power, including directe voltage regulation
09/30/1998EP0868003A1 A plant for transmitting electric power
09/30/1998EP0868002A1 A plant for transmitting electric power
09/30/1998EP0868001A2 A plant for transmitting electric power
09/30/1998EP0868000A1 A plant for transmitting electric power, with regulation of reactive power
09/30/1998EP0867998A1 A plant for transmitting electric power
09/30/1998EP0866392B1 Method and switching device for commutation noise-free power control of electrical loads
09/29/1998US5815387 Transformer protective apparatus having semiconductor and mechanical bypass means
09/29/1998US5815385 Control of an installation for transmission of high-voltage direct current
09/29/1998US5814975 For providing series compensation in an ac electrical power transmission
09/29/1998US5814904 Method for providing alternate current paths to a junction
09/29/1998US5814901 Electrical power distribution circuit
09/24/1998WO1998041793A2 High efficiency lighting system
09/24/1998CA2218942A1 A plant for transmitting electric power
09/23/1998EP0866392A1 Method and switching device for commutation noise-free power control of electrical loads
09/23/1998EP0865634A2 Control equipment for an electric power network
09/22/1998US5812422 Computer software for optimizing energy efficiency of a lighting system for a target energy consumption level
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