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)
08/2007
08/30/2007WO2007097696A1 Control of power flow in a transmission line
08/30/2007WO2007097316A1 Emergency power source system using fuel cell, and distribution board
08/30/2007WO2007097314A1 Emergency power supply system using fuel cell
08/30/2007US20070200537 Semiconductor device
08/30/2007US20070200435 Redundant mobile power supply system
08/29/2007EP1825585A1 Electric power flow control
08/29/2007EP1825584A1 Device for controlling power distribution to subsystems
08/29/2007EP1047179B1 Method of operating a power supply system having parallel-connected inverters, and power converting system
08/29/2007CN200941548Y Low voltage power capacitor combined appliance having internal temp protection of capacitor
08/29/2007CN101027478A Regenerative energy system
08/29/2007CN101026633A IEC 61850 and OPC based heterogeneous power quality monitoring device integrating method and gateway
08/29/2007CN101026306A External multi-energy distribution energy-saving system for oil field pumping unit
08/29/2007CN101026305A Control device for boost three-phase grid-connected inverting system
08/29/2007CN101026304A Power factor correcting circuit
08/29/2007CN101026303A Special filter for medium frequency furnace
08/29/2007CN101026302A Hybrid active filter frequency division control method
08/29/2007CN101026301A Method, apparatus and computer program product for injection current
08/29/2007CN101025145A Wind-driven generating apparatus
08/29/2007CN100334882C Method of transmission line configuration
08/29/2007CN100334787C Transformer type adjustable reactor and static reactive compensator compose of it
08/28/2007US7263450 Method and apparatus for reading and controlling electric power consumption
08/28/2007US7262520 Robust power distribution systems and methods
08/28/2007US7261962 Variable fuel cell power system for generating electrical power
08/23/2007WO2007094054A1 Power system stabilizing system
08/23/2007WO2007022828A3 Modular system controlled according to power requirements
08/23/2007US20070198985 Power system protection system
08/23/2007US20070198133 Grid Stabilising System
08/23/2007US20070194627 Power converting device
08/23/2007DE102007005352A1 Generatorsysteme und entsprechende Verfahren Generator system and corresponding method
08/23/2007DE102006009046A1 Hybrides Filter Hybrid filter
08/22/2007EP1821382A2 Wind farm with an additional gearswitch assembly for low-wind operation
08/22/2007EP1821381A2 Method and switching assembly for distributing the energy supply to large electrical equipment
08/22/2007EP1279122A4 Computer program and method for reducing hvac demand for energy
08/22/2007CN2938505Y Intelligent reactive compensation distribution box
08/22/2007CN1333505C Steady-state controlling method of current parallel voltage compensator for superconductive energy storage
08/22/2007CN101022221A Energy management system for distributing equipment and method thereof
08/22/2007CN101022220A Electric distributing network reactive trend optimization scheduling method
08/22/2007CN101022219A Harmonic cancellation and power compensating device
08/22/2007CN101022218A Medium voltage mixed active electric filter
08/21/2007US7259544 Load symmetrization with controllable inductor
08/21/2007US7259477 Uninterruptible power supply
08/21/2007US7259476 DC and AC uninterruptible power supply
08/21/2007US7259474 Method and apparatus for aggregating power from multiple sources
08/21/2007US7259473 Method of controlling parallel diverse conversion paths in DC-to-DC power converter
08/16/2007WO2007092503A2 System and method for remotely regulating the power consumption of an electric appliance
08/16/2007US20070191992 Power distribution expert system
08/16/2007US20070189044 Nine device AC-to-AC converter
08/15/2007EP1819028A2 Redundant fieldbus system
08/15/2007EP1819024A1 Electric-power supply system, and vehicle
08/15/2007EP1819023A2 Wind turbine dump load system and method
08/15/2007EP1819022A1 Establishing switchyard zones of a high or medium voltage switchyard
08/15/2007EP1818944A1 Power cable line
08/15/2007EP1817829A2 Wiring diagram for watt and blind current component compensation in the earth fault point and phase-to-ground voltage equalization under failure-free network condition
08/15/2007CN2935588Y AC-DC-AC traction transformation device
08/15/2007CN2935587Y Renewable electric energy feedback apparatus of frequency changing elevator capable of distant indication
08/15/2007CN2935586Y Special energy-saving reactive compensation cabinet for 1.14KV oil pumping unit
08/15/2007CN2935585Y Harmonic filter
08/15/2007CN2935584Y Automatic system analog simulation test apparatus of power distribution network
08/15/2007CN1332489C Multifunctional adjuster for quality of voltage in low voltage system
08/15/2007CN1332488C Engine-driven power generation equipment and the combine power system
08/15/2007CN101019293A Method for islanding detection of grid-connected electrical power systems
08/15/2007CN101017982A Light voltage and wind power integrated networking device with the reactive power compensation and harmonious administration function
08/15/2007CN101017981A Method and apparatus for detecting individual operation, controller and distributed power source for the same
08/15/2007CN101017980A Multi-variant control method of the distribution static reactive power generator
08/15/2007CN101017979A Compound control method of injection mixed active power filter
08/15/2007CN101017978A Control method for high-power active filter
08/15/2007CN101017977A A method for accurately computing the power line loss
08/15/2007CN101017561A Systems for, and method of, insuring risks in a restructured energy industry
08/14/2007US7256644 Semiconductor circuit device having hierarchical power supply structure
08/14/2007US7256638 Series active filtering power line conditioner
08/14/2007US7256517 Interface circuit for providing a computer logic circuit with first and second voltages and an associated method
08/14/2007US7256508 Wind farm
08/09/2007WO2007089208A1 Controlled series compensator and method
08/09/2007WO2007087929A1 Method for smoothing alternating electric current from a number of power generating units and wind power plant including a number of wind mills with variable rotational speed
08/09/2007WO2007054914A3 A home automation system
08/09/2007US20070182253 Systems and methods for reducing input current in photoflash chargers
08/09/2007US20070180777 Generator controller
08/09/2007DE102006004338A1 Verfahren zum Ansteuern elektrischer Einrichtungen in einem Zug oder Zugverband A method for driving electrical equipment in a train or train
08/09/2007DE102006003904A1 Verfahren zur Umwandlung einer Gleichspannung in eine dreiphasige Wechselspannung A process for converting a DC voltage into a three-phase alternating voltage
08/08/2007EP1816721A1 Method for smoothing alternating electric current from a number of power generating units and wind power plant including a number of wind mills with variable rotational speed
08/08/2007EP1816670A2 Predictive failure scheme for industrial power delivery system
08/08/2007EP1400000B1 Method of monitoring a high voltage grid power system
08/08/2007CN2932796Y Household electricity-saving device
08/08/2007CN2932786Y Compensator that can increase the power transmission capacity of pressure-connected tension-resistant cable clamps
08/08/2007CN2932775Y Oil field oil extractor electricity-saving control cabinet
08/08/2007CN1331292C Allocation transformer equipment
08/08/2007CN101015108A Electric control and supply system
08/08/2007CN101014918A Power flow controller responsive to power circulation demand for optimizing power transfer
08/08/2007CN101013823A Apparatus for synchronizing uninterruptible power supplies
08/08/2007CN101013819A Methods and apparatus for coupling an energy storage system to a variable energy supply system
08/08/2007CN101013818A Three-level medium voltage converter for megawatt wind power generation
08/08/2007CN101013817A Full power combination converter for megawatt wind power generation
08/08/2007CN101013816A Power intelligent seamless three-phase leveling system
08/08/2007CN101013815A Active suppressing apparatus for modularized parallel digital control electric harmonic
08/07/2007US7254465 No-break-power-transfer control system for variable frequency electrical power systems
08/07/2007US7254001 Circuit protection system
08/07/2007US7253538 Method of supplying electric power from shore to ship and system thereof
08/07/2007CA2268507C Improvements in or relating to the application of power-factor correction in ac power systems
08/02/2007WO2007086880A1 Offset correction in a feedback system for a voltage controlled oscillator
08/02/2007WO2007086033A1 Harmonic absorber
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