Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
05/2001
05/17/2001WO2001035516A1 An alternating motor with starter
05/17/2001WO2001035509A1 Active filtering of ac/dc switched converter
05/17/2001WO2001035351A1 System for certified use of electrical energy
05/17/2001DE19953238A1 Electrical power supply method involves parallel mode with isolated network coupled to public network via protective device that is opened if public network fails to select isolated mode
05/17/2001DE19948196A1 Verfahren zum Betrieb eines Windparks Method for operating a wind farm
05/16/2001EP1099291A1 Communications processor, remote host and multiple unit control devices and methods for micropower generation systems
05/16/2001EP1099290A2 Integrated mode control for micropower systems
05/16/2001EP1099289A1 Line power unit for micropower generation
05/16/2001CN2430810Y High efficiency power DC high frequency switch rectifier
05/16/2001CN2430805Y Self cooling stable dynamic reactive power compensator
05/15/2001US6232675 Power distribution apparatus comprising relay devices for controlling current flow along power paths of the power distribution apparatus
05/10/2001US20010001051 Power system
05/09/2001EP1098422A1 No-break power supply with an electrical machine and a flywheel
05/09/2001EP1097499A1 Method and device for limiting making current and excess power from an alternating-current induction generator
05/09/2001EP1097498A1 High frequency energy network
05/09/2001EP0792483B1 Transmission line power controller with a continuously controllable voltage source responsive to a real power demand and a reactive power demand
05/09/2001CN2429948Y Power supply monitoring controller
05/09/2001CN1294445A Three-phase rectifier with power factor correcting circuit
05/09/2001CN1065676C Method and circuit for disconnecting transformer in dependence on whether load connected thereto requires power, or not
05/08/2001US6229228 High-speed disconnector using semiconductor technology
05/08/2001CA2219040C A system for transmitting electric power
05/03/2001WO2001003268B1 Control of active power in a high voltage direct current transmission system
05/03/2001DE19948694A1 Verfahren zum Erkennen einer Pendelung in einem elektrischen Energieversorgungsnetz A method for detecting an oscillation in an electrical power supply network
05/02/2001EP1096634A2 Three phase mains filter with neutral
05/02/2001EP1096349A1 Configuration of a plant guidance sytem
05/02/2001EP1095438A1 Device for distributing energy between a plurality of electronic modules with possibility of shedding
05/02/2001CN1293477A Power factor corrector
05/02/2001CN1293476A Method and system for inhibiting voltage fluctuation in transmission line
05/02/2001CN1065375C Harmonic current attenuation device for electric motor
05/01/2001US6225791 Controller for performing a decoupling control of a transformerless reactive series compensator
05/01/2001US6225776 Charging station for electric-powered vehicles
05/01/2001CA2160655C Data collection and processing for digital ac power system monitor/analyzer
04/2001
04/26/2001WO2000065878A3 Method and device for supplying an electric arc melting furnace with current
04/19/2001WO2001028063A1 The virtual trading floor for trading fungible, ephemeral commodities including electric energy
04/19/2001DE10044570A1 Modular static converter for enabling clearly understandable cabling and simple retrospective fitting
04/18/2001EP1092256A1 Detection of faults on transmission lines in a bipolar high-voltage direct current system
04/18/2001EP1092255A1 Method and device for reducing the current in the neutral conductor
04/18/2001EP1092254A1 A system for controlling power consumption at a user of electric power
04/18/2001EP0847612B1 Method and device for compensation of reactive power
04/18/2001CN2427030Y Energy-saving controller for oil field pumping unit
04/17/2001US6219623 Anti-islanding method and apparatus for distributed power generation
04/17/2001US6218813 Cross current compensation system and method
04/17/2001CA2218941C Method and apparatus for limiting current in a direct voltage network of a power transmission system
04/12/2001WO2001026201A1 A plant for transmitting electric power and a method for reconstructing such a plant
04/12/2001WO2001025630A1 Method for operating a wind farm
04/12/2001WO2001025628A2 Wind power plant
04/11/2001EP1090450A1 A method and a device for damping power oscillations in transmission lines
04/11/2001EP1090449A2 Hybrid filter for an alternating current network
04/11/2001CN2426608Y Multiple fee ratio electric energy meter with time interval output device
04/11/2001CN1290983A Single line power transmission system
04/10/2001US6215677 Method and an apparatus for current sensing in an AC/DC converter
04/10/2001US6215272 Fuel cell device
04/05/2001WO2001024343A1 Method for recognizing an oscillation in an electric supply network
04/05/2001WO2001024342A1 Control equipment for thyristor-controlled series capacitor equipment, and a method for control thereof
04/04/2001CN1290118A Direct arc furnace supplied by controllable current
04/04/2001CN1290060A Antitheft energy-saving electric power transmission/transform method for oil field
04/03/2001US6212446 Method and apparatus for detecting out-of-step in electric power system
04/03/2001US6211581 Power bar with remote control
04/03/2001CA2221230C Power supply arrangement for a control circuit
03/2001
03/29/2001WO2001022552A1 Control of extinction angle for a line-commutated converter
03/29/2001DE19944237A1 System for electrical supply has controllers that activate exactly the required number of current generating units to cover the current total current demand
03/28/2001EP1087116A2 Control process for a heat engine with generator
03/27/2001US6208040 Customer side power management system including auxiliary fuel cell for reducing potential peak load upon utilities and providing electric power for auxiliary equipment
03/27/2001CA2148076C Power monitor apparatus and method with object oriented structure
03/22/2001WO2001020745A1 Method for controlling the reactive power and device for generating electrical energy in an electrical network
03/22/2001DE19944917A1 Verfahren zur Kompensation von asymmetrischen Lasten in Mehrphasensystemen A method of compensating for unbalanced loads in polyphase systems
03/21/2001EP1085637A2 Method for compensating assymetrical loads in multi-phase systems
03/21/2001EP1085636A2 Energy saving service offering method and apparatus therefor
03/21/2001EP1084325A1 Arrangement for the removal of cuttings and gas arising from drilling operations
03/21/2001CN1288605A System stabilizer for power generating system
03/21/2001CN1288602A Man-machine interface for a custom tabular display
03/21/2001CN1063589C Automatic compensation type voltage stabilizer
03/20/2001CA2320001A1 Method to compensate for asymmetric loads in polyphase systems
03/20/2001CA2236964C Synchronous machine simulator and synchronous machine simulation method
03/15/2001WO2001018937A1 A plant for generating electric power and a method for operation of such a plant
03/15/2001DE10020635A1 Verfahren zur Blindleistungsregelung sowie Vorrichtung zur Erzeugung elektrischer Energie in einem elektrischen Netz A process for the reactive power control, and device for generating electrical energy in an electrical network
03/14/2001EP1082799A1 Power-factor correction arrangement
03/14/2001CN1063296C Switched-mode power source with standby mode
03/14/2001CN1063292C Electric transmission installation using high-voltage DC current
03/13/2001US6202041 Electrical power network modelling method
03/13/2001US6201715 Synchronous frame regulation to extract a positive sequence component of a line voltage
03/08/2001WO2001017092A1 Electric power supervision
03/08/2001WO2001017089A1 Unified constant-frequency integration control of active power filters
03/08/2001WO2001017085A1 Material-utilised alternating current machines
03/08/2001DE19939601A1 Verfahren zur Oberschwingungskompensation in elektrischen Versorgungsnetzen A method for harmonic compensation in electrical power networks
03/08/2001DE19938527A1 Reactive power control device has transistor switched on shortly after apex of half wave in which diode conducts, off after phase delay if effective reactive power of capacitor to be reduced
03/06/2001US6198643 System with choke in parallel with A/C power line for load conditioning
03/06/2001US6198641 Plant for transmitting electric power including bidirectionally controlled thyristors (BCT)
03/01/2001WO2001015300A1 Device, system and method for monitoring a household electric appliance
02/2001
02/28/2001EP1079493A2 Method for harmonics compensation in electric power networks
02/28/2001EP1078446A1 Device for creating a neutral point in an electrical system
02/28/2001EP1078435A1 Line powered, primary side connected apparatus injecting voltage compensation into an electric power line using one transformer
02/28/2001EP1078434A1 Power inverter apparatus using the load transformer of an ac power line to insert series compensation
02/28/2001CN1285640A Loaded grouping switch for electric network reactive compensation bridging capacitor
02/28/2001CN1285639A Controller for static reacance generator
02/28/2001CN1285529A Monomer for cross-linkage agent containing double bond and photoresist copolymer containing same
02/28/2001CN1062684C Transmission line power flow controller with unequal advancement and retardation of transmission angle
02/27/2001US6194795 Transformer configuration
02/27/2001US6194794 Integrated reciprocating engine generator set and turbogenerator system and method
02/22/2001WO2001013193A1 Electric power supply network, in particular for public lighting