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)
09/1998
09/22/1998US5812389 Power distribution control system
09/22/1998US5812365 Device for cooling a capacitor with circulating water
09/17/1998WO1998040948A1 An active filter device
09/16/1998EP0865139A2 Power flow control with rotary transformers
09/16/1998EP0865138A1 Method and device for A.C. voltage forming
09/16/1998EP0864194A1 Polyphase static var compensator arrangement
09/16/1998EP0864193A2 Apparatus and method for interline power flow control
09/16/1998EP0864192A2 Process and device for regulating n power converter stations of a multipoint hvdct network
09/16/1998CN2291739Y Anti-resonance grounding voltage transformer
09/15/1998US5809488 Management system for a power station installation
09/15/1998US5809054 Method for stabilizing an AC system against reactive-load fluctuations, and a power-factor correction device
09/15/1998US5808452 For an ac transmission line
09/15/1998US5808449 Method and apparatus for detecting islanding operation of dispersed generator
09/15/1998US5808378 Control arrangement and method for high-speed source transfer switching system
09/11/1998WO1998021924A3 Control equipment for an active filter
09/09/1998EP0863452A1 Power supply circuits
09/09/1998EP0862808A1 An installation for power transmission by means of high-voltage direct current, comprising device for detection of a permanent ground fault
09/08/1998US5805032 Electrical filter for attenuating oscillations in AC mains
09/08/1998US5804949 Thyristor-controlled series capacitor triggering system
09/02/1998EP0861406A1 Thermal energy storage air conditioning system
09/02/1998EP0861366A2 Method and device for rapid output adjustment of a power-generating facility
09/02/1998CN1192079A Control system for power conversion system
09/02/1998CN1192016A Creation method and apparatus of network configuration for power system
09/01/1998US5801460 Electrical power transmitting system with reduced feeder size and method of operation
09/01/1998US5801459 Control equipment for a series capacitor connected into an electric power line
08/1998
08/27/1998CA2198641A1 Thermal storage controller with auto-power setting
08/26/1998CN2289334Y Mechanical interlocking device capable of preventing self-generating reversing transmission
08/26/1998CN2289333Y Device for automatic compensating single phase reactive power
08/25/1998US5798939 For use by electric utility in planning/operation of its power system
08/25/1998US5798634 Installed in a receiving end substation
08/25/1998US5798633 Battery energy storage power conditioning system
08/25/1998US5798632 Variable speed wind turbine generator with zero-sequence filter
08/20/1998WO1998036369A1 System for optimizing a network plan and method of operation
08/20/1998CA2280969A1 System for optimizing a network plan and method of operation
08/19/1998EP0663115B1 Hvdc transmission
08/19/1998CN2288538Y Autocontrolled reactive compensation relay
08/18/1998US5796628 Dynamic method for preventing voltage collapse in electrical power systems
08/18/1998US5795229 Video game power controller
08/13/1998WO1998035512A1 Switching system
08/13/1998CA2250729A1 Switching system
08/12/1998EP0858153A1 Method for controlling a power plant
08/12/1998EP0858141A2 A method and a device for control of a capacitor device for a shunt-connected compensator unit
08/12/1998EP0792534B1 Methods of enhancing capacity of transformer equipment and of power flow control using phase-shifting transformers and series impedances in parallel arrangements
08/12/1998CN1190283A Method for controlling power plant
08/12/1998CN1190279A Controller of power converter
08/12/1998CN1190161A Power changing system for two-way changing between hydraulic energy and electric energy
08/11/1998US5794212 System and method for providing more efficient communications between energy suppliers, energy purchasers and transportation providers as necessary for an efficient and non-discriminatory energy market
08/11/1998US5793593 Method and apparatus using a five-wire network for distribution of electrical power
08/06/1998WO1998034315A1 Series compensation of electric alternating current machines
08/06/1998WO1998021803A3 Improvements relating to signalling in electricity distribution systems
08/06/1998CA2278631A1 Series compensation of electric alternating current machines
08/05/1998EP0856930A2 Electric circuit and method for lossless influencing of first order reactive power and/or higher order harmonic currents in three-phase AC networks with or without neutral conductor
08/04/1998US5790399 Electrical load management method and apparatus for a vessel
08/04/1998US5790394 Dual AC power supply input module
08/04/1998US5790392 Intelligent power supply with staged loading capability
07/1998
07/29/1998EP0809879B1 Method and device for filtering and damping conducted interference caused by ultimate consumers
07/28/1998US5786642 Modular power management system and method
07/22/1998CN1188343A 功率转换系统 Power conversion system
07/21/1998US5784240 Method and apparatus for limiting current surge upon transfer of a load between A.C. power sources
07/16/1998WO1998031086A1 Circuit for selective power supply to electrical units
07/16/1998WO1998030912A2 Method and apparatus for applying real time pricing and usage rates in a network
07/16/1998CA2276727A1 Circuit for selective power supply to electrical units
07/15/1998EP0852841A1 Mains-adapted voltage-applying high-output oblique transformer controlled by a current converter
07/14/1998US5781425 Method and device for control of a converter installation
07/14/1998US5780939 Method and apparatus for determining orders of non-characteristic harmonic currents, and for compensation of the noncharacteristic harmonic currents
07/09/1998WO1998029933A1 System interconnection protective device for non-utility generation equipment
07/09/1998WO1998029788A1 Method and device for automatically switching three-phase voltage for power saving transformer
07/07/1998US5777401 Circuitry for reduction of the magnetic field in the vicinity of multiphase power lines
07/07/1998CA2074150C Transcutaneous energy transfer device
07/02/1998WO1998028095A1 Roll stand drive arrangement
06/1998
06/25/1998WO1998027476A1 Flicker controllers using voltage source converters
06/25/1998DE19745747A1 Power conversion system for bi-directional conversion between hydraulic and electrical energy, e.g for aircraft
06/25/1998DE19654620A1 Process for uniform load distribution in public or private distribution networks
06/25/1998DE19653182A1 Antriebseinrichtung für Walzgerüste Drive means for rolling mills
06/25/1998DE19651364A1 Device for improving mains compatibility of wind-power plants with asynchronous generators
06/23/1998US5771161 Uninterruptable capability for an active power line conditioner
06/23/1998US5770897 For switching a load between first and second sources
06/23/1998US5770895 Of a heat treatment apparatus
06/18/1998WO1998026489A1 APPARATUS FOR AND METHOD OF EVENLY DISTRIBUTING AN ELECTRICAL LOAD ACROSS AN n-PHASE POWER DISTRIBUTION NETWORK
06/18/1998WO1998015906A3 Control equipment for an electric power network
06/17/1998EP0847612A1 Method and device for compensation of reactive power
06/17/1998EP0748471A4 An electrically controllable inductor
06/17/1998CN2284462Y Current power coefficient automatic compensating gear
06/17/1998CN1185242A Balancer executed with z-connected windings
06/17/1998CN1185241A Apparatus for and method of evenly distributing electrical load across three-phase power distribution network
06/17/1998CN1185212A Electrical load optimization devicer
06/10/1998EP0846358A1 Electrical load optimization device
06/09/1998US5764501 For connecting to a power line carrying an ac signal
06/09/1998US5763959 Control cabinet for building automation systems
06/03/1998CN1183860A Energy management and building automation system
06/03/1998CN1038632C 电力变换器 Power converter
06/02/1998US5761084 Highly programmable backup power scheme
06/02/1998US5761083 Energy management and home automation system
06/02/1998US5761073 Programmable apparatus for synchronizing frequency and phase of two voltage sources
06/02/1998US5760492 Control system for power transmission and distribution system
06/02/1998US5760491 Method and circuit for disconnecting a transformer in dependence on whether a load connected thereto requires power, or not
05/1998
05/28/1998WO1998021924A2 Control equipment for an active filter
05/26/1998US5757637 Power converter with star configured modules
05/26/1998US5757635 Power factor correction circuit and circuit therefor having sense-FET and boost converter control circuit
05/26/1998US5757099 Hybrid parallel active/passive filter system with dynamically variable inductance
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