| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 07/04/1989 | CA1256943A1 Apparatus for controlling a turbo generator |
| 06/29/1989 | DE3743244A1 Switching apparatus arrangement for connecting and disconnecting capacitors |
| 06/29/1989 | DE3741749A1 Compensation power system for a voltage distributor installation |
| 06/28/1989 | EP0321823A1 Method and device for disconnecting the active and reactive power supply of a two-network high-voltage direct-current power transmission link |
| 06/28/1989 | CN1004675B Device for stabilizing torsional-vibration of turbogenerator shaft |
| 06/28/1989 | CN1004674B Series resonance constant-current electric charging machine with overdamping |
| 06/27/1989 | US4843513 Method and arrangement for protecting turbine generators against subsynchronous resonances occurring in power transmission systems |
| 06/27/1989 | CA1256490A1 Static var generator system having improved response time |
| 06/22/1989 | DE3742028A1 Method and device for testing the reliability of an energised switching operation in a switching installation |
| 06/21/1989 | EP0282577A4 Energy management system. |
| 06/21/1989 | CN1004597B Arrangement for transferring electric power |
| 06/20/1989 | US4841210 Industrial robot control device |
| 06/14/1989 | EP0319980A2 Apparatus for controlling a power converter |
| 06/07/1989 | EP0318790A1 High-pass filter of a filter arrangement for a network connected to a power converter |
| 06/06/1989 | US4837671 State signal formation for indicating the transition into the bypass mode of operation in an apparatus for high-voltage D-C transmission |
| 06/01/1989 | DE3839501A1 Power supply device for an electrical load |
| 05/30/1989 | US4835411 Active filter unit |
| 05/24/1989 | EP0316804A1 Reactive power controller |
| 05/24/1989 | CN1033132A Arangement for high frequency link power conversion |
| 05/23/1989 | US4833585 Zone filter |
| 05/23/1989 | CA1254612A1 Induction motor control system |
| 05/18/1989 | WO1989004562A1 Power supply system for segmented loads |
| 05/18/1989 | DE3836563A1 Drive system for a coolant pump in an atomic power station |
| 05/17/1989 | EP0315871A1 Process and device for the control of a current rectifier in an asymmetric network |
| 05/09/1989 | US4829229 Series capacitor equipment |
| 05/09/1989 | US4829228 Dual generator electrical system |
| 05/09/1989 | US4829159 Method of optimizing control of plural switched electric loads to reduce switching transients |
| 05/09/1989 | CA1253891A1 Hydraulic buffer |
| 05/03/1989 | EP0313926A2 Asynchronous multiphase switching gear |
| 05/03/1989 | CN1004111B Power factor calibration system working in accordance with counting and cycling mode |
| 05/03/1989 | CN1004108B Automatic control devices for generating station |
| 04/26/1989 | EP0313366A2 Variable speed constant frequency power system with boost converter auxiliary output |
| 04/26/1989 | CN2036711U High-efficiency power factor automatic compensation controller |
| 04/25/1989 | CA1253203A1 Phase shifter |
| 04/19/1989 | EP0311995A2 Power saving circuitry |
| 04/19/1989 | CN2036327U Non-compensation condenser automatic on and off device |
| 04/18/1989 | US4823067 Energy conserving electric induction motor control method and apparatus |
| 04/05/1989 | EP0310048A2 Inverter apparatus for system interconnection |
| 04/04/1989 | US4819180 Variable-limit demand controller for metering electrical energy |
| 04/04/1989 | US4819121 Security apparatus for power converter |
| 03/29/1989 | EP0308765A1 Process and device for the determination of the real value of an inverter's extinction angle |
| 03/29/1989 | EP0308621A2 Power system stabilizer |
| 03/28/1989 | US4816980 Converter system for coupling two high voltage three-phase networks |
| 03/16/1989 | DE3730138A1 Method of dynamically controlling the reactive power of compensation installations |
| 03/15/1989 | EP0307383A1 Process for controlling electrical power, and system for carrying out this process |
| 03/15/1989 | CN2034344U Universal automatic controller for power factor of medium and power frequency |
| 03/15/1989 | CN2034343U Automatic electronic type error peak clipper |
| 03/14/1989 | US4812730 Variable-speed generator/motor system |
| 03/14/1989 | US4812669 Harmonic suppressing device |
| 03/14/1989 | CA1251258A1 Ferroresonant constant ac voltage regulator |
| 03/08/1989 | CN2033957U Power factor compensating apparatus with computer |
| 03/08/1989 | CN2033956U Apparatus for the prevention of back-flow current from network to electric power generating set |
| 03/08/1989 | CN2033955U Reactive voltage synthetical controlling and recording device with micro-computer |
| 03/08/1989 | CN2033954U Super antijamming device |
| 03/07/1989 | US4811236 Transmission line voltage detector for static VAR generator |
| 03/01/1989 | CN2033554U Reactive power compensating device |
| 02/28/1989 | US4808843 Method and means for damping supersynchronous oscillations in an AC power system |
| 02/28/1989 | US4808835 Power generation cassette type power plant for marine electric propulsion and a controller thereof |
| 02/21/1989 | US4806937 Power distribution system for a phased array radar |
| 02/15/1989 | EP0303314A2 Method for power control of electric loads without commutation pulse |
| 02/14/1989 | US4804938 Distribution energy management system |
| 02/09/1989 | DE3725515A1 Extinguishing thyristors of railway or industrial power converter - using self-commutating rectifier across AC voltage terminals of main rectifier |
| 02/08/1989 | EP0302679A2 Circuit and method for paralleling AC electrical power systems |
| 02/08/1989 | EP0302107A1 Power generating system |
| 02/08/1989 | CN1003268B Dc power transmission system |
| 02/01/1989 | EP0301905A2 Circuit and method for synchronizing power sources in a parallel AC electrical power system |
| 02/01/1989 | EP0301904A2 Circuit for automatic paralleling of ac power sources |
| 01/25/1989 | EP0300343A2 Active filter unit |
| 01/25/1989 | EP0300091A2 Multiple time delay power controller apparatus with time delay turn-on and turn-off |
| 01/25/1989 | CN1030675A Gate signal generator for thyristor valve |
| 01/24/1989 | US4800291 Electronic circuit for control of a voltage regulator of an electrical generator |
| 01/18/1989 | EP0299916A1 Damping arrangement for reactive power-compensating and filtering circuits |
| 01/18/1989 | EP0299275A1 Power converter assembly for coupling two kinds of high-voltage three-phase networks together |
| 01/11/1989 | EP0298935A1 A method and arrangement for protecting turbine generators against subsynchronous resonances occuring in power transmission systems |
| 01/11/1989 | EP0298515A1 Gate signal generator for thyristor valve |
| 01/10/1989 | US4797799 Power converter |
| 01/10/1989 | US4797587 Triggering method for a thyristor switch |
| 01/10/1989 | US4797570 Automatic paralleling of AC power sources |
| 01/04/1989 | CN2030392U Automatic controller used for reactive compensator |
| 01/04/1989 | CN2030391U Reactive power supply unit using gto |
| 12/28/1988 | CN88211422U Automatical power factor compensating controller making use of micro-computer |
| 12/27/1988 | US4794353 Dissipative low-pass filter |
| 12/21/1988 | EP0295864A2 Consumption meter |
| 12/14/1988 | EP0294514A2 Variable inertia energy storage system |
| 12/14/1988 | EP0294394A1 Peak power shaving apparatus and method. |
| 12/06/1988 | CA1246191A1 Load current management system for automotive vehicles |
| 12/06/1988 | CA1246155A1 Line fault tolerant synchronous timing reference generator for static var generators |
| 12/06/1988 | CA1246143A1 Thyristor control pulse generating device for feeding the reactive power inductance adjustment in an electrical network |
| 11/22/1988 | US4786799 Power control for cooking appliance with multiple heating units |
| 11/17/1988 | EP0290914A1 Status signal generated for indicating the by-pass transition in a device for high voltage direct current power transmission |
| 11/15/1988 | US4785405 Power system stabilizer |
| 11/15/1988 | CA1244877A1 Methods of and systems for synchronized coordination of energy balancing and system time in the control of bulk power transfers |
| 11/09/1988 | EP0289975A1 Series capacitor equipment |
| 11/09/1988 | CN88210037U Microcomputor multi-function eliminating harmonic wave device |
| 11/02/1988 | EP0288642A2 Real load unbalance protection circuit and method |
| 11/02/1988 | CN87215227U 10 kv outdoor capacitance compensation cabinet |
| 10/26/1988 | CN87214754U Single-phase quantity-limited power-supplying device |
| 10/25/1988 | US4780910 Display for a remote receiver in an electrical utility load management system |
| 10/25/1988 | US4780622 Apparatus for reducing stresses that initiate restrike of breakers in disconnecting capacitor banks |
| 10/12/1988 | EP0286377A2 Cogeneration system and method |