Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
11/2011
11/23/2011CN102255325A Method for improving system damping by using additional damping controller of wind turbine
11/23/2011CN102255324A Networking power compensation control system
11/23/2011CN102255323A Method for calculating reactive power limits of double-feed wind generating set
11/23/2011CN102255322A Method for interactively iterative control of voltage reactive power of regional power grid
11/23/2011CN102255321A Method and detection device for detecting AVC (Automatic Volume Control) system
11/23/2011CN102255320A Voltage reactive real-time control system of regional power grid and enclosed loop control method thereof
11/23/2011CN102255319A Electrical network voltage wattless real time control assessment method based on section data extraction and system thereof
11/23/2011CN102255318A Capacitor breaker and isolation switch device
11/23/2011CN102255317A Earthquake alarm household electronic power saver
11/23/2011CN102255316A In-phase static reactive power controller and control method thereof
11/23/2011CN102255315A Three-phase current balance adjustment system of electric energy adjusting and electricity saving device
11/23/2011CN102255314A Power unit of active power filter
11/23/2011CN102255313A Active-type harmonic control and reactive power control comprehensive device
11/23/2011CN102255312A Method for inhibiting switch burrs of back-to-back harmonic source
11/23/2011CN102255311A Method for controlling automatic gain control (AGC) set
11/23/2011CN102255310A AVC (Automatic Voltage Control) evaluation method and system
11/23/2011CN102255309A Self-healing control method of centralized distribution network
11/23/2011CN102255308A Method for identifying normal state of distribution network
11/23/2011CN102255307A Layering equivalence method for reliability estimation of distribution network
11/23/2011CN102254256A Transmission and distribution network integration comprehensive line loss management analysis system and processing flow thereof
11/23/2011CN102254101A Intelligent cloud analyzing system of power gird system and data analyzing method thereof
11/23/2011CN102252531A Submerged-arc furnace controller with low-pressure reactive compensation and electrode current control
11/23/2011CN102251852A Simply grid-connected small gas generating set
11/23/2011CN101604843B Method for reducing line loss by regulating running voltage of distribution network
11/23/2011CN101527458B Parallel type energy feedback elevator system
11/23/2011CN101335455B Dynamic reactive compensator
11/22/2011US8065542 Distributed table-driven power mode computation for controlling optimal clock and voltage switching
11/22/2011US8063513 Power source and method for controlling operational power
11/22/2011US8063508 Power supply scheme for reduced power compensation
11/22/2011US8063504 Systems and methods for powering circuits for a communications interface
11/21/2011CA2740319A1 Current supply arrangement with a first current supply device and a second current supply device
11/21/2011CA2708733A1 Transfer switch enclosure
11/17/2011WO2011142830A2 Apparatus and methods for controlling light fixtures and electrical appliances
11/17/2011WO2011142330A1 Electric power supply system
11/17/2011WO2011142296A1 Power-generation schedule creating apparatus
11/17/2011WO2011142014A1 Connection device for electric power converters
11/17/2011WO2011141811A1 Uninterruptible power supply systems and methods using isolated interface for variably available power source
11/17/2011WO2011141798A2 Electric power control apparatus and grid connection system having same
11/17/2011WO2011141214A1 Method and apparatus for determining an excess amount of energy of an electric energy store of a vehicle
11/17/2011WO2011141053A1 A high voltage dc switchyard with semiconductor switches
11/17/2011WO2011141052A1 A plant for transmitting high voltage dc electric power including overvoltage protection
11/17/2011WO2011140841A1 Conjugate multi-directional inversion power supply
11/17/2011WO2011140840A1 Networking method for hierarchical control micro-grids
11/17/2011WO2011140771A1 Communication power supply wiring unit and method compatible to various alternating current input mode
11/17/2011WO2011140597A1 Methods and apparatus for supplying three phase power
11/17/2011WO2011104273A3 Method and control arrangement for controlling a reactive power source
11/17/2011WO2011087783A3 Ac diversion mode controller
11/17/2011WO2011059804A3 Method of recovering power losses in a residential, commercial or industrial facility
11/17/2011WO2011055226A3 Electric power supply system comprising power modules coupled in parallel
11/17/2011US20110282513 System, apparatus and method for controlling charge and discharge of electric vehicle
11/17/2011US20110282510 Apparatus and method for energy management
11/17/2011US20110278939 Electrical Power Transfer Plug and Connection System
11/17/2011US20110278928 Wind-powered data center
11/17/2011US20110278922 Bi-Level Switching With Power Packs
11/17/2011US20110278921 Adaptive Power Bus
11/17/2011US20110278917 Apparatus and method for coupling rf and ac signals to provide power to a multipole in a mass spectrometer
11/17/2011DE102010020609A1 Schalteinrichtung Switching device
11/16/2011EP2387128A1 Power control system and method and program for controlling power control system
11/16/2011EP2386754A1 System for control of wind power electricity generation accumulator and method of control thereof
11/16/2011EP2386137A1 Reconfigurable power converter module
11/16/2011CN202043052U Intelligent photovoltaic inverter and power generating system with same
11/16/2011CN202043020U Insulating beam used in high-voltage direct current converter valve
11/16/2011CN202042945U Integrated and split type combined flow changing chain controller
11/16/2011CN202042912U Parallel power generation system
11/16/2011CN202042911U Micro grid control device
11/16/2011CN202042910U Renewable energy centralized power generation device
11/16/2011CN202042909U Longitudinal capacitance compensation device for submerged arc furnace
11/16/2011CN202042908U Self-excited four-tap magnetically-controlled reactor
11/16/2011CN202042907U Small-sized energy-saving filtering /compensation device
11/16/2011CN202042906U Voltage spike filter
11/16/2011CN202042905U Double tuned filter applied to automatic tracing compensation arc suppression coil complete device
11/16/2011CN202042904U Automatic on-line tracking and monitoring device for capacitance and current of power grid
11/16/2011CN202042812U Dual power supply power distribution device for high-capacity transformer
11/16/2011CN202042811U Switch type 10KV (kilovolt) temporary box type power transformation equipment with outlets capacity not larger than 800KVA (kilovolt ampere)
11/16/2011CN202042800U Installation structure for main loop internal component of optimized power saving device
11/16/2011CN202042309U Adjustable iron core reactor
11/16/2011CN202040021U Megawatt wind power seawater desalination system suitable for island power grid
11/16/2011CN202040016U Wind turbine device in operation by using solar energy to regulate speed
11/16/2011CN102246383A Autonomous distributed AC power system
11/16/2011CN102246382A Fuel cell device and method for feeding electrical current to electrical network
11/16/2011CN102246381A System and apparatus for power transfer to vessels
11/16/2011CN102246380A Improved DC bus regulator
11/16/2011CN102246379A A method of upgrading a plant for transmitting electric power and such a plant
11/16/2011CN102246378A Power saving system and method
11/16/2011CN102246377A System, apparatus and method for power transfer to vessels
11/16/2011CN102246376A Universal power inlet system for power distribution units
11/16/2011CN102244498A Power generating unit driver, power generating unit and energy output equipment in power grid
11/16/2011CN102244475A Inverter current control method based on repetitive control
11/16/2011CN102244404A Intelligent MD (maintenance device) of storage battery
11/16/2011CN102244401A System, apparatus and method for controlling charge and discharge of electric vehicle
11/16/2011CN102244394A Two-stage initiative separation method based on normalized spectral clustering and constrained spectral clustering
11/16/2011CN102244393A System and method for photovoltaic plant power curve measurement and health monitoring
11/16/2011CN102244392A Automated mechanical disconnection of an electrical converter module in a frequency converter arrangement
11/16/2011CN102244391A Energy storage grid-connected circuit based on lithium batteries and super capacitor and control method thereof
11/16/2011CN102244390A Smooth energy storage system capacity optimization method for microgrid junctor power fluctuation
11/16/2011CN102244389A Method for solving imbalance of three-phase currents and managing negative sequence based on SVG (scalable vector graphics) device
11/16/2011CN102244388A Reactive power compensation and filtering device with automatically adjustable inductance ratio
11/16/2011CN102244387A Application of SPWM (Sinusoidal Pulse Width Modulation) control technique based on amplitude and frequency compression modulation to active power filtering
11/16/2011CN102244386A Device and method for adjusting low harmonic power
11/16/2011CN102244385A DVR (dynamic voltage restorer) control system based on DSP (digital signal processor) chip and FPGA (field programmable gate array) chip