Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
02/2001
02/22/2001WO2000013287A8 Communications processor, remote host and multiple unit control devices and methods for micropower generation systems
02/22/2001DE19939709A1 Switchable impedance for connection between AC voltage supply network and electric consumer or generator
02/22/2001DE19937661A1 Circuit for three-phase transmission system has reactive impedance selected or that can be selected so reactive power of system can be compensated at mains frequency or for harmonic(s)
02/21/2001CN2420771Y Power-line carrier isolator
02/21/2001CN2420760Y Enerlgy saving, anti-frandulent use integrated dragging device for oil pump unit
02/21/2001CN1285024A Constant turbine inlet temperature control of microturbine power generating system
02/20/2001US6191563 Energy saving power control system
02/20/2001US6191500 System and method for providing an uninterruptible power supply to a critical load
02/15/2001WO2001011763A1 Unified constant-frequency integration control of three-phase power factor corrected rectifiers, active power filters, and grid-connected inverters
02/15/2001WO2001011751A1 Impedance-compensated power transmission circuit
02/15/2001WO2001011525A1 Systems for, and method of, insuring risks in a restructured energy industry
02/15/2001DE19937410A1 Three-phase solar converter for mains and island power operations adapts voltage levels from DC voltage generated by solar cells to the public mains power supply by raising and converting power.
02/15/2001DE19937069A1 Electric-electronic component for compensating inductive portions in electric AC voltage mains power supplies has a synchronous capacitor implemented as a hybrid, a capacitor, connectors and a synchronous switch.
02/15/2001DE19936873A1 Schaltungsanordnung Circuitry
02/15/2001CA2381253A1 Systems for, and method of, insuring risks in a restructured energy industry
02/14/2001EP1076394A2 Circuit arrangement for a three-phase transmission system
02/14/2001EP1075724A1 Power controller
02/14/2001CN2419726Y Automatic compensator for power factor of network
02/14/2001CN2419725Y Low voltage reactance compensator
02/14/2001CN2419724Y Distribution style contactless switch assembly
02/13/2001US6188591 System for supplying electromotive consumers with electric energy
02/13/2001US6188205 Power system control apparatus and power system control method
02/13/2001US6188200 Power supply system for sump pump
02/13/2001US6188145 Meter collar with interface for connecting on-site power source, and the interface itself
02/13/2001US6188143 System for supplying electrical energy to electrical apparatus
02/13/2001US6188139 Integrated marine power distribution arrangement
02/07/2001EP1075069A2 Circuit arrangement
02/07/2001CN2418607Y Reactive-power automatic tracing compensation control host-machine
02/07/2001CN1283322A Converter connection assembly with direct voltage intermediate circuit
02/06/2001CA2218940C A plant for transmitting electric power
02/01/2001DE19934543A1 Observation method for upper total power threshold for several of consumers , involves assigning parameters, and detecting actual power that cannot be switched off
01/2001
01/31/2001EP1072081A1 Method for adjusting total output of power engineering installations
01/31/2001CN2417623Y Automatic tracing, reactive-load compensation arrangement
01/31/2001CN1282130A Electric network reactive-load continuous compensation method and its compensation equipment
01/31/2001CN1061485C Interconnection system for transmitting power between electrical systems
01/30/2001US6181985 Rate-based load shed module
01/30/2001US6181984 Creation method and apparatus of network configuration for power system
01/30/2001US6181582 Method and circuit arrangement for generating a representation of the supply voltage in a frequency converter
01/25/2001WO2001006612A1 System and method for energy management
01/25/2001WO2001006432A1 User interface to facilitate, analyze and manage resource consumption
01/25/2001DE19932833A1 Regulating total power of power generation system(s) with group of loads involves using load schema enabling more cost-effective utilization of energy tariffs with load time shifts
01/25/2001DE10032846A1 Power factor correction circuit for a.c.-d.c. power converter varies switch-off time as function of the peak inductance current during each switching period
01/24/2001EP1071197A2 DC/DC conversion circuit
01/24/2001EP1071185A2 Turbogenerator power control system and method
01/24/2001EP1070376A1 Device and method for supplying an electric load with electric energy
01/24/2001CN1281280A Reactive power compensator of aontactless switch
01/23/2001US6178362 Energy management system and method
01/23/2001US6178076 Power-electronic circuit arrangement for compensating for mains system disturbances and mains voltage reductions
01/23/2001CA2305113A1 Turbogenerator power control system and method
01/18/2001WO2001004766A1 Method for coupling an internal appliance to one of a plurality of external networks
01/17/2001EP1069666A1 Control of active power in a high voltage direct current transmission system
01/17/2001EP1069518A1 Visual description of voltage states in an electrical switching graph
01/17/2001EP1069517A1 Visual description of voltage states in an electrical switching graph
01/17/2001CN1280411A Static reactive compensator
01/16/2001US6175218 Power factor correction (PFC) controller
01/11/2001WO2001003268A1 Control of active power in a high voltage direct current transmission system
01/10/2001EP1067650A1 Control arrangement For the distribution of electric power and method of operation
01/10/2001CN1279839A Electricity supply system
01/10/2001CN1279830A Power flow control
01/10/2001CN1279809A Magnetic energy storage
01/10/2001CN1060602C Power inverter
01/09/2001US6172889 Inverter apparatus islanding operation detecting method and inverter apparatus capable of surely detecting an islanding operation with a simple construction
01/09/2001US6172494 Circuit arrangement for delivering a supply current
01/09/2001US6172492 Fixed off time and zero voltage switching dual mode power factor correcting converter
01/09/2001US6172488 AC transmission system with reactance compensation
01/09/2001US6172432 Automatic transfer switch
01/04/2001WO2001001542A1 Method for managing energy consumption of household appliances
01/04/2001CA2377811A1 Method for managing energy consumption of household appliances
01/03/2001EP1064714A1 A supply device for power supply to an electronic unit in a semiconductor valve in a shunt-connected thyristor-switched capacitor
01/03/2001CN1060293C Method for stabilizing electric net resisting reactive load fluctation and compensator for reactive power
01/03/2001CN1060292C Electric distribution system operating equipment
01/02/2001US6169678 Photovoltaic power generation apparatus and control method thereof
01/02/2001US6169334 Command and control system and method for multiple turbogenerators
01/02/2001US6169332 Constant turbine inlet temperature control of a turbine power generating system
12/2000
12/28/2000WO2000079669A1 Automatic transfer switch
12/27/2000CN2412318Y ON-spot compensating and voltage reducing starting cabinet for motor
12/27/2000CN2412309Y High voltage mechanical vacuum multi-stage reactive-load compensation equipment
12/27/2000CN1278371A Electric power plant
12/26/2000US6167389 Method and apparatus using distributed intelligence for applying real time pricing and time of use rates in wide area network including a headend and subscriber
12/21/2000WO2000077908A1 An application and method for voltage instability predictor (vip)
12/21/2000WO2000077530A1 A method and an apparatus for current sensing in an ac/dc converter
12/20/2000EP1060556A1 Electricity supply system
12/20/2000EP0893001A4 Distributed frequency relay
12/20/2000CN2411611Y Intelligent total removing reactive power device
12/19/2000US6163471 Damping of an oscillation in a plant for transmission of high voltage direct current
12/13/2000CN1059522C Method for controlling power converter and power converting system
12/12/2000US6160318 Energy supplying system
12/07/2000WO2000074199A1 Power transmission apparatus and method for power transmission
12/07/2000WO2000074198A1 A wind power plant
12/07/2000WO2000073652A1 A wind power plant and a method for control
12/07/2000CA2375125A1 A wind power plant
12/07/2000CA2375067A1 A wind power plant and a method for control
12/06/2000EP1057248A1 Impedance angle control method
12/06/2000EP1057234A1 Anti-islanding method and apparatus for distributed power generation
12/06/2000CN1276096A Method and device for improving the quality of voltage of secondary supply unit
12/05/2000US6157874 Power control systems and processes
12/05/2000US6157552 Sub-harmonic detection and control system
11/2000
11/29/2000CN1274978A Series compensator
11/29/2000CN1274977A Combined power filter with both active and passive parts
11/23/2000WO2000007274A3 Active common-mode compensation for multi-phase inverters