Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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03/12/1997 | EP0762624A2 Control system for power converter system |
03/12/1997 | EP0762622A1 High voltage DC link converter control and protection system |
03/12/1997 | EP0762598A2 Transfer switch system with subnetwork |
03/12/1997 | EP0761031A1 Control of an installation for transmission of high-voltage direct current |
03/12/1997 | CN1144983A Urban medium-tension distribution net interconnecting wire-splice system |
03/11/1997 | US5610937 Regulation method for a DC arc furnace |
03/11/1997 | US5610834 Method for improving voltage stability security in a power transmission system |
03/11/1997 | US5610501 Dynamic power and voltage regulator for an ac transmission line |
03/11/1997 | US5610500 Method of converting turbine driven generator into a synchronous condenser |
03/06/1997 | WO1997008802A1 An electric power line and a method of reducing the radiation of high frequency electromagnetic fields therefrom |
03/05/1997 | EP0760177A1 Recovery of transmitted power in an installation for transmission of high-voltage direct current |
03/04/1997 | US5608615 Asynchronous intergrid transfer apparatus |
03/04/1997 | US5608276 Structure and method for performing active injection mode filtering on an AC power system |
02/27/1997 | WO1997007581A1 Static var compensator |
02/27/1997 | DE19530825A1 Energy optimising in distribution system with power storage capability |
02/26/1997 | CN1143851A Power converting circuit |
02/26/1997 | CN1143849A High-low voltage capacitor complete compensator |
02/25/1997 | US5606245 Power supply systems |
02/20/1997 | WO1997006590A1 Device for compensating harmonic oscillation currents in a transmission line consisting of several conductors |
02/20/1997 | WO1997006589A1 Thyristor switched capacitor bank |
02/20/1997 | CA2228487A1 Thyristor switched capacitor bank |
02/19/1997 | EP0758498A1 Method for improving voltage stability security in a power transmission system |
02/18/1997 | US5604421 Electrical systems |
02/18/1997 | US5604420 Stabilizer for power system |
02/18/1997 | US5604385 Apparatus for and method of evenly distributing an electrical load across a three phase power distribution network |
02/13/1997 | DE19529302A1 Vorrichtung zur Kompensation von Oberschwingungsströmen einer aus mehreren Leitern bestehenden Übertragungsstrecke Device for compensation of harmonic currents of a multi-conductors transmission line |
02/12/1997 | EP0758153A2 Circuit device for disconnecting a transformer not under load |
02/12/1997 | EP0757855A1 Method for performing a voltage stability security assessment for a power transmission system |
02/09/1997 | CA2182837A1 Transfer switch system with subnetwork |
02/08/1997 | CA2182730A1 Method and circuit for disconnecting a transformer in dependence on whether a load connected thereto requires power, or not |
02/06/1997 | WO1997004521A1 A variable speed wind turbine generator system with zero-sequence filter |
02/05/1997 | EP0757429A1 Switched mode power supply with power factor correction |
02/05/1997 | EP0697120B1 Management equipment for generators of electrical energy |
01/29/1997 | EP0755583A1 Installation for transmission of electric power by means of high-voltage direct current |
01/28/1997 | US5598349 Responding to pricing signals from a power supplier using mixed add/shed and profile setback delta schemes |
01/28/1997 | US5598079 A.C. induction devices having tuned compound windings |
01/28/1997 | CA2070614C Reactive power control system |
01/23/1997 | WO1997002639A1 A power transmission system for high-voltage direct current |
01/23/1997 | DE19530826C1 Power output optimisation system for energy distribution system |
01/22/1997 | EP0755111A1 Voltage step-down device and asynchronous traction system fed by a single-phase network using such device |
01/22/1997 | EP0701743B1 Process and device for reducing asymmetric voltages in a three-phase system by means of a static compensator |
01/22/1997 | CN2245815Y Automatic controllor for double-circuit concentrated power supply for wired TV |
01/21/1997 | US5596492 Method and apparatus for de-centralized signal frequency restoration in a distributed UPS system |
01/16/1997 | DE19528766C1 Thyristorgeschaltete Kondensatorbank Thyristor switched capacitor bank |
01/15/1997 | EP0689732B1 Process and regulating arrangements for d.c. transmission |
01/15/1997 | CN1140250A Air conditioner with solar generator |
01/14/1997 | US5594659 Method for performing a voltage stability security assessment for a power transmission system |
01/14/1997 | US5594630 Add-on distortion scrubber for AC power systems |
01/14/1997 | CA2097600C Reduction of disturbances in a power network |
01/09/1997 | WO1996034293A3 Process for monitoring a three-phase mains for a change in the tuning of the arc supression coil |
01/09/1997 | DE19600547A1 Inverter protection circuit for industrial electrical power mains network |
01/08/1997 | CN1033773C High-efficiency relay battery power-supplying system capable of energy storage during non-peak load |
01/07/1997 | US5592394 FET current sensor for active balancing or regulating circuits |
01/07/1997 | US5592369 Device in a d.c. circuit for transfer of a current from one current path to another and for control of the voltage in the circuit |
01/07/1997 | US5592074 Battery power supply system |
01/01/1997 | CN1139307A Power converter protecting apparatus for electric power system |
12/27/1996 | WO1996042038A1 Tuned a.c. power systems compensator having variable reflective impedance for linear and non-linear reactive load compensation |
12/27/1996 | EP0750383A1 Automatic user load selection and reset in a "total electric power load management system" |
12/25/1996 | CN1138922A Method and device for compenseation of unblance in a series-compensated converter station |
12/24/1996 | US5587917 Data collection and processing for digital AC power system monitor/analyzer |
12/19/1996 | WO1996040318A1 Power management system for a dialysis machine |
12/19/1996 | WO1996036100A3 Process and circuitry to cover peak energy demands in electric alternating or three-phase current networks |
12/19/1996 | WO1996036097A3 Process and device for the static and dynamic support of a mains voltage by means of a static compensator with a self-commutated converter |
12/19/1996 | DE19616591A1 Power converter unit of voltage source type |
12/18/1996 | EP0749190A2 Interconnection system for electrical systems having differing electrical characteristic |
12/18/1996 | EP0748991A2 Air conditioner with solar generator |
12/18/1996 | EP0748471A1 An electrically controllable inductor |
12/18/1996 | EP0689729B1 Process and regulating arrangement for d.c. transmission |
12/18/1996 | EP0565701B1 Reduction of disturbances in a power network |
12/18/1996 | EP0538298B1 A switchboard |
12/18/1996 | CN1138242A Voltage source type electric power variable flow device |
12/17/1996 | US5586018 Device for suppressing voltage fluctuation and higher harmonics |
12/14/1996 | CA2636690A1 Air conditioner with solar generator |
12/12/1996 | WO1996039736A1 Inverter controlled series compensator |
12/10/1996 | US5583423 Energy saving power control method |
12/10/1996 | US5583419 Power supply systems |
12/10/1996 | CA2056316C Operating control device and method for wound-rotor induction machine |
12/05/1996 | WO1996038896A1 Fail-safe lighting system with load shedding and dimming |
12/05/1996 | DE19544777C1 Control method for converter station of HV DC transmission network |
12/04/1996 | EP0746078A2 Method and apparatus for detecting islanding operation of dispersed generator |
12/04/1996 | EP0746077A2 Power system compensator apparatus and power converter apparatus |
12/04/1996 | EP0745283A1 Converter assembly for power transmission by means of high-voltage direct current |
12/04/1996 | CN2241939Y Reactive compensating automatic controlling relay |
12/04/1996 | CN1137191A Power system compensator apparatus and power converter apparatus |
12/04/1996 | CN1137157A Phase-shifting transformer and protection system of phase-shifting transformer |
12/03/1996 | US5581132 Peak demand limiter and sequencer |
11/28/1996 | WO1996037946A1 Power converter drive |
11/28/1996 | WO1996037940A1 Apparatus for and method of evenly distributing an electrical load across a three-phase power distribution network |
11/28/1996 | WO1996037813A1 Adaptive power capacitor controller |
11/28/1996 | DE19619305A1 Controlled electrical power series compensator with capacitor bank |
11/28/1996 | DE19519424A1 Stromrichterantrieb Converter drive |
11/27/1996 | EP0744810A1 A device for setting the priority of an electrical socket |
11/26/1996 | US5579195 Power stoppage minimizing systems for distribution lines and methods of using a distribution line |
11/26/1996 | CA2127157C Reactive power compensating apparatus capable of reducing in switching loss in steady state operation thereof |
11/21/1996 | WO1996021264A3 Energy management and building automation system |
11/20/1996 | EP0671067B1 Method and arrangement for detecting and damping transient oscillations at or near a natural resonant frequency in a power transmission system |
11/20/1996 | CN1136229A Method and device for control of series-compensated converter station |
11/20/1996 | CN1136228A Method and device for control of series-compensated converter station |
11/19/1996 | US5576942 Method and apparatus for reducing the harmonic currents in alternating-current distribution networks |
11/14/1996 | WO1996036100A2 Process and circuitry to cover peak energy demands in electric alternating or three-phase current networks |