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)
12/1999
12/01/1999CN1237031A Electric power converter
12/01/1999CN1237024A Controlling system, protection controlling system for power system and storage medium for storing program
11/1999
11/30/1999US5995394 Device for connecting a VSC converter to a source of alternating voltage
11/30/1999US5995391 Control arrangement for a multilevel convertor
11/25/1999WO1999060687A1 Power system
11/25/1999WO1999060686A1 Power inverter apparatus using the load transformer of an ac power line to insert series compensation
11/25/1999WO1999060685A1 Line powered, primary side connected apparatus injecting voltage compensation into an electric power line using one transformer
11/25/1999CA2332840A1 Power system
11/23/1999US5991181 Power conversion apparatus
11/17/1999EP0956628A1 APPARATUS FOR AND METHOD OF EVENLY DISTRIBUTING AN ELECTRICAL LOAD ACROSS AN n-PHASE POWER DISTRIBUTION NETWORK
11/17/1999CN1046602C Generalized fast power flow controller
11/16/1999US5986907 Method and apparatus for rectification derectification and power flow control
11/16/1999US5986903 Control apparatus for a converter for transmitting electric power between an alternating voltage network and a direct voltage network
11/16/1999US5984173 Neutral point connected apparatus providing compensation to an AC power line
11/16/1999CA2193862C Apparatus and method for regulating a power line using frequency domain self-synchronization control
11/16/1999CA2193505C Capacitor polarity-based var correction controller for resonant line conditions and large amplitude line harmonics
11/11/1999WO1999057800A1 Device for creating a neutral point in an electrical system
11/11/1999WO1999057793A1 Method and device for reducing the current in the neutral conductor
11/11/1999DE19815672A1 Power electronic circuit arrangement for connecting at least one compensation capacitor to inductively loaded electrical energy supply network
11/11/1999CA2331710A1 Method and device for reducing the current in the neutral conductor
11/11/1999CA2331648A1 Device for creating a neutral point in an electrical system
11/09/1999US5982650 Intra-grid power director
11/09/1999US5982207 Integrated circuit output buffer with reduced voltage output swing
11/09/1999US5980095 Plant for transmitting electric power
11/09/1999CA2200226C Series-compensated converter station
11/09/1999CA2165101C Power converter protecting apparatus for electric power system
11/03/1999EP0954082A2 AC transmission system
11/03/1999EP0953890A2 Household appliance and its method of operation
11/03/1999CN2347299Y Outdoor on-column reactive power automatic compensating gear
11/03/1999CN1233866A Apparatus and method for powering multiple peripheral devices from color-coded central power source
11/03/1999CN1046176C Multi-user tandem device for power supply
11/03/1999CN1046166C Management equipment for generators of electrical energy
11/02/1999US5977761 Three-phase transformer with in phase regulating winding for the regulation of phase voltages
11/02/1999US5977731 Power system stabilizer and power system stabilization method
11/02/1999US5977660 Active harmonic filter and power factor corrector
11/02/1999US5977659 Inverter apparatus and solar power generation apparatus
11/02/1999US5977645 Aircraft secondary power system
10/1999
10/28/1999WO1999054984A1 Method for adjusting total output of power engineering installations
10/28/1999DE19819874A1 Harmonics compensation method in electric supply network
10/28/1999DE19819869A1 Harmonics compensation method in electric supply network
10/28/1999DE19818815A1 Haushaltsgerät sowie Verfahren zum Betreiben desselben The same financial instrument and method for operating
10/27/1999CN2346107Y Single-phase inductive load power-factor compensator
10/27/1999CN1233355A Method and device for compensating reactive current portions by means of a compensation arrangement with a pulse current rectifier
10/26/1999US5974403 Power trading and forecasting tool
10/26/1999US5973937 Switching power supply circuit of current-resonance type without a choke coil
10/26/1999US5973491 System interconnection generator
10/26/1999US5973481 Control system and circuits for distributed electrical power generating stations
10/21/1999WO1999053593A1 Device and method for supplying an electric load with electric energy
10/21/1999WO1999053592A1 Device and method for supplying an electric load with electric energy
10/21/1999DE19817191A1 Method for regulating the total power consumption of power consuming installations using ripple control
10/20/1999EP0951126A1 Compensation device and power transmission system using a compensation device
10/20/1999EP0950278A1 Circuit for selective power supply to electrical units
10/20/1999EP0840949B1 Power converter drive
10/20/1999CN1232311A AC transmission system
10/20/1999CN1232310A Compensation device and power transmission system using compensation device
10/20/1999CN1045849C Power swing detection apparatus for electric power
10/19/1999US5969510 Three-phase to six-phase wye transformer power system
10/19/1999US5969509 Method and a device for control of a capacitor device for a shunt-connected compensator unit
10/17/1999WO1999050860A1 Power distribution network incorporating a voltage support transformer and process of use
10/14/1999WO1999052194A1 A system for controlling power consumption at a user of electric power
10/14/1999WO1999052193A1 Power controller
10/14/1999CA2327481A1 A system for controlling power consumption at a user of electric power
10/14/1999CA2326192A1 Power controller
10/13/1999EP0949738A2 Improvements in or relating to the application of power-factor correction in ac power systems
10/13/1999EP0640255B1 A primary inductive pathway
10/13/1999CN1045681C Passive power factor compensator
10/12/1999US5965956 Overhead line for electric energy transmission
10/12/1999CA2161304C Three-phase filter equipment
10/07/1999WO1999050945A1 Method and device for limiting making current and excess power from an alternating-current induction generator
10/07/1999DE19814767A1 Electronic power circuit arrangement for compensating mains interferences and voltage interruptions of voltage supply network with feeding in inverter and transformer
10/06/1999EP0948111A2 Fault protection arrangements and methods for electric power distribution systems
10/06/1999CN1230817A Automatic reactive power control method for electric power system
10/05/1999US5963457 Electrical power distribution monitoring system and method
10/05/1999US5963022 Method and apparatus for compensating phase distortion caused by a high impedance voltage source
10/05/1999US5963021 Delayed contact closing apparatus and method for capacitors
10/05/1999CA2199298C Methods of enhancing capacity of transformer equipment and of power flow control using phase-shifting transformers and series impedances in parallel arrangements
10/05/1999CA2193593C Control system for power conversion system
10/05/1999CA2030686C Direct-arc electric furnace fed with controlled current and method to feed a direct-arc furnace with controlled current
09/1999
09/30/1999WO1999049558A1 A supply device for power supply to an electronic unit in a semiconductor valve in a shunt-connected thyristor-switched capacitor
09/30/1999WO1999049549A1 Damping of an oscillation in a plant for transmission of high voltage direct current
09/29/1999EP0945957A1 Damping of an oscillation in a plant for transmission of high voltage direct current
09/29/1999EP0944950A1 A method and an apparatus for filtering an electric current supplied to a motor
09/29/1999EP0944945A2 Improvements relating to signalling in electricity distribution systems
09/29/1999EP0755583B1 Installation for transmission of electric power by means of high-voltage direct current
09/29/1999CN2341311Y Automatic compensation controller for power factor of high and low voltage power network
09/29/1999CN2341310Y Static imaginary power compensator
09/29/1999CN1230051A Fast cut-off switch using semiconductor tech.
09/23/1999DE19812341A1 Schneller Trenner in Halbleitertechnologie Fast separator in semiconductor technology
09/22/1999EP0944155A2 Fast disconnect switch in semi-conductor technology
09/22/1999CN1229533A High efficiency lighting system
09/22/1999CN1045236C Differential distribution type electric energy storage system
09/21/1999US5956462 Domestic electric energy control
09/14/1999US5953225 Power flow control and power recovery with rotary transformers
09/14/1999US5953224 Control circuit for cryogenically-cooled power electronics employed in power conversion systems
09/14/1999US5952816 Compensation for power transfer systems using variable rotary transformer
09/14/1999CA2184731C An electrically controllable inductor
09/10/1999WO1999045623A1 Apparatus and method for controlling flow of power in a transmission line including stable reversal of power flow
09/08/1999EP0940902A1 Method to connect a synchronous generator parallel and device to execute the method
09/08/1999EP0940901A2 Control system, method of protectively controlling electric power system and storage medium storing program code
09/08/1999EP0939995A1 Wind power site
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