Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
08/2001
08/23/2001WO2001061838A1 An energy generating and supply system
08/23/2001WO2001061833A1 Dual-input, automatic-switching power supply
08/23/2001WO2001061820A1 Decentralised energy network system
08/22/2001EP1126573A2 Damping device for at least one electrical cable
08/22/2001CN2444331Y Electric source device capable of regurating peak value by user
08/22/2001CN1309451A Electric power transformation system and method for controlling power transformer
08/22/2001CN1309448A Power factor compensator for correcting unbalance in three phases of current
08/21/2001US6278622 Electric power source apparatus including electric power converter circuit and method for controlling the same
08/21/2001US6278262 Auxiliary power unit system and method of operating an auxiliary power unit
08/21/2001US6278200 Current management system for a telecommunications power system
08/21/2001CA2145471C Overcurrent trip unit with separately adjustable neutral protection
08/16/2001DE10004458A1 Schaltungsanordung zur Reduzierung von Oberschwingungsströmen in einem ein- oder mehrphasigen Versorgungsnetz mit oder ohne Nulleiter Circuit arrangement for reducing harmonic currents in a single- or multi-phase power supply with or without neutral
08/15/2001CN1308787A Device for creating a neutral point in an electrical system
08/15/2001CN1308785A Method and device for reducing the current in the neutral conductor
08/14/2001CA2247353C Encoder apparatus and methods employing optical and graphical programming
08/09/2001US20010012211 Power system stabilization system and method employing a rechargeable battery system
08/09/2001US20010011618 Elevator control apparatus using charge/discharge control circuit for power storage apparatus
08/08/2001EP1122856A2 Power system stabilization system and method employing a rechargeable battery system
08/08/2001CN2442437Y One group silicon controlled reactifier projection and switch multiway capacitance compensator
08/08/2001CN1307389A Fully automatic contactless throw-in and throw-off reactive compensator
08/02/2001WO2001056131A1 Improved method for supplying electric power to a network using an alternating current generator associated with a turbine
08/02/2001WO2001055577A2 Method and device for generating power and heat
08/02/2001DE10003186A1 Verfahren und Vorrichtung zur Strom- und Wärmeerzeugung Method and apparatus for generating electricity and heat
08/02/2001CA2365632A1 Improved method for supplying electric power to a network using an alternating current generator associated with a turbine
08/01/2001EP1119893A1 System for supplying power to a load connected to a distribution network
08/01/2001EP0640254B1 A non-contact power distribution system
08/01/2001CN2441254Y Reactance style energy saving device
08/01/2001CN1306687A Hybrid filter for alternating current network
07/2001
07/26/2001WO2001054256A1 Method and apparatus for a solar power conditioner
07/25/2001EP1118151A1 Electrical power transmission system
07/19/2001WO2001052379A2 Electric power system based on renewable energy sources
07/18/2001CN2439746Y Reactance type electric power compensator
07/18/2001CN2439745Y Stepped voltage regulating type high voltage dynamic reactive compensator
07/18/2001CN1304201A Switchover apparatus and method for electric source system
07/12/2001WO2001050570A1 Method and apparatus for multifrequency power distribution
07/12/2001WO2001050568A1 Method and circuit for using polarized device in ac applications
07/11/2001CN1303159A Dynamic analog device of controllable serial capacitors compensation
07/11/2001CN1303158A Tripper for electric consumption
07/10/2001US6259614 Power factor correction control circuit
07/05/2001DE19961705A1 Arrangement for decentralized supply of regenerative energy performs voltage regulation at combination point for controlled improvement of quality of electrical supply
07/05/2001DE19960491A1 Vorrichtung und Verfahren zur Steuerung des Antriebs einer Fördereinrichtung Apparatus and method for controlling the drive of a conveyor device
07/04/2001EP1113560A2 Power converter system and method of controlling power converter
07/04/2001CN1302110A Power system monitor and controller, its equipoment information forming device, and its storage medium
07/04/2001CN1301662A Lift controller
07/04/2001CN1068147C Method for static and dynamic control of mains voltage and device for realizing said method
07/03/2001US6255806 Supply device for power supply to an electronic unit in a semiconductor valve in a shunt-connected thyristor-switched capacitor
07/03/2001US6255805 Device for electrical source sharing
06/2001
06/28/2001WO2001047100A1 Auxiliary electrical power generation system and method of operating same
06/28/2001WO2001047098A1 Energy conserving motor controller
06/28/2001WO2001047086A1 Sub-harmonic detection and control system
06/28/2001WO2001047082A1 Rack mountable power distribution apparatus
06/28/2001US20010005802 Energy and power interchange system and its method
06/28/2001US20010005321 Power converter system and method of controlling power converter
06/28/2001CA2362651A1 Sub-harmonic detection and control system
06/27/2001CN2437070Y Self-fault diagnosis type power distributor
06/27/2001CN1301424A Power system
06/26/2001US6252753 Energy service stabilizer
06/26/2001US6252311 Load sensor and controller/manager
06/21/2001WO2001045227A1 Method for designing a power factor controller apparatus
06/21/2001WO2001044083A1 Process for switching between mains supply and a frequency inverter and vice versa for an escalator drive
06/21/2001WO2000016463A9 Man-machine interface for a custom tabular display
06/21/2001US20010004322 Interconnection power converter and power generation apparatus using the same
06/21/2001DE19959573A1 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)
06/21/2001DE19957261A1 Electrical power supply arrangement with superconducting magnets as energy store
06/21/2001CA2394316A1 Method for designing a power factor controller apparatus
06/20/2001EP1109283A1 Method for designing a power factor controller apparatus
06/20/2001EP1109282A1 A medium voltage power factor controlled switchboard
06/20/2001CN2435874Y Multi-functional compensating device for reduction of harmonics and flicker in power and electronic system
06/20/2001CN1300126A Controller for controlling decoupling of transformer-free reactive series compensater
06/19/2001US6249719 Applications and methods for voltage instability predictor (VIP)
06/19/2001US6249108 Unified constant-frequency integration control of active power filters
06/19/2001CA2268480C Universal harmonic mitigating system
06/14/2001WO2001041547A2 Capacitor bank switching
06/13/2001EP1107439A2 Interconnection power converter and power generation apparatus using the same
06/13/2001DE19959572A1 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)
06/13/2001CN1067188C Power inverter having three or more parallel driven PWM-type power inverting unit
06/12/2001US6246218 Method and control device for stabilizing a power supply network
06/07/2001WO2001041293A1 Method and apparatus for deriving characteristics of a utility signal in an ac machine drive system
06/07/2001WO2001041280A1 Method and apparatus of managing ephemeral, fungible commodities based upon real-time forward prices
06/07/2001WO2001041279A1 Method and system of managing ac power networks based upon flow-gate market transactions
06/07/2001US20010002774 Apparatus and method for powering multiple peripheral devices from a color-coded central power source
06/06/2001EP1104591A1 Power system
06/06/2001EP1104590A1 Energy coordination system
06/06/2001CN2433763Y Microcomputer automatic sub-synchronous control device
06/06/2001CN2433760Y Thunder-lightning-proof overtension combination protection equipment
06/06/2001CN1298191A Synchronous open-circuit method for breaker of power generator and its control equipment
06/06/2001CN1066694C Stand-by power system
06/05/2001US6242895 Controller of adjustable DC voltage for a transformerless reactive series compensator
05/2001
05/31/2001WO2001039356A2 Method, system and computer program for controlling energy transfer from an energy storage device
05/31/2001WO2001039349A1 Voltage regulation of a utility power network
05/31/2001WO2001039345A2 Method and apparatus for providing power to a utility network
05/31/2001CA2676240A1 Voltage regulation of a utility power network
05/30/2001EP0901691B1 Control equipment for an active filter
05/29/2001US6239997 System for connecting and synchronizing a supplemental power source to a power grid
05/25/2001WO2001037392A1 Electrical control system
05/25/2001CA2391615A1 Electrical control system
05/23/2001EP1102380A1 Power transmission apparatus and method for power transmission
05/23/2001CN1066290C High-voltage dc transmission system
05/22/2001US6236261 Multi-driving apparatus by a multi-level detection and a method for controlling the same
05/22/2001US6234427 Solar array regulation and spacecraft pointing using flywheel energy storage with programmable voltage control