Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02J - Circuit arrangements or systems for supplying or distributing electric power; Systems for storing electric energy › H02J 3 - Circuit arrangements for ac mains or ac distribution networks
Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663)
10/2003
10/15/2003CN1449087A Method of parallel operation for uninterruptible power supply
10/15/2003CN1449083A Active harmonic wave suppressing device and control method
10/15/2003CN1124673C Device for removing noise in ac power waveform
10/15/2003CN1124625C Electric distribution transformer and distribution connection method
10/14/2003US6633823 System and method for monitoring and controlling energy usage
10/14/2003US6633802 Power management under limited power conditions
10/14/2003US6633799 Configurable switchgear system
10/14/2003US6633154 Method and circuit for using polarized device in AC applications
10/14/2003US6633092 Protection of a dynamic voltage restorer
10/14/2003US6631622 Demand side management of freezer systems
10/14/2003CA2387113C Method for controlling the reactive power and device for generating electrical energy in an electrical network
10/09/2003WO2003084041A1 Power conversion system and method of converting power
10/09/2003WO2003084023A1 A power distribution/generation system
10/09/2003WO2003084022A1 Energy management system and method
10/09/2003WO2003056671A3 On-line control of distributed resources with different dispatching levels
10/09/2003WO2003043170A3 Redox flow battery system and method of operating it
10/09/2003WO2003025701A9 Utility capacity transfer system
10/09/2003US20030189420 Method for assisting in planning of power supply schedule
10/09/2003US20030189378 Method for mains-synchronous switching of circuit breakers, and an apparatus for carrying out this method
10/09/2003CA2480551A1 Energy management system and method
10/08/2003EP1351267A1 Method and apparatus for a network synchronized switching of a power switch
10/08/2003CN2579031Y Anti-interference A.C. power supply plug
10/08/2003CN1123966C Three-phase rectifier with power factor correcting circuit
10/08/2003CN1123956C Overvoltage suppressor blocking static reactive power generator under pulse mode
10/08/2003CN1123955C Integrated solar energy application system for lifting water and lighting
10/07/2003US6630816 Grid-type engine generator apparatus for connecting an output of an engine-driven generator to a power network
10/07/2003US6630752 Uninterruptible transfer switch
10/02/2003US20030187550 Electrical power distribution control systems and processes
10/02/2003US20030187520 Method and apparatus for circuit breaker node software architecture
10/02/2003US20030184938 Integrated power factor correction and MOSFET integrated circuit
10/02/2003US20030184648 Television intercom system
10/02/2003US20030184160 Parallel operation method for an uninterruptible power supply apparatus
10/01/2003EP1349263A1 Process for the operation of a transformer connected to a controllable voltage source as well as an apparatus for the implementation of that process
10/01/2003CN2577488Y Omnibearing protective controller for beam-pumping unit
10/01/2003CN1445902A Automatic even current adjustor for parallel operated variable current power case
10/01/2003CN1445901A Method for automatic controlling voltage of electrical power system
10/01/2003CN1445900A High-capacity tandem type active electric power filter
10/01/2003CN1445897A Method for operating transformer by driving voltage source and its actuating equipment
10/01/2003CA2385432A1 Monitoring and control for power electronic system
09/2003
09/30/2003US6628103 Power factor control apparatus and method
09/30/2003US6628014 Cable voltage drop compensation in an electric power supply system
09/30/2003US6628009 Load balanced polyphase power distributing system
09/30/2003US6626279 Process for switching between main supply and a frequency inverter and vice versa for an escalator drive
09/25/2003WO2003079511A1 Circuit protection system
09/25/2003US20030182023 Load controller and method to enhance effective capacity of a photovoltaic power supply using a dynamically determined expected peak loading
09/25/2003US20030180592 System and method for power generation control, program, and medium
09/25/2003US20030177776 Demand side management of freezer systems
09/24/2003EP1347552A2 Reactive power control
09/24/2003EP1346452A1 System, method and computer program product for enhancing commercial value of electrical power produced from a renewable energy power production facility
09/24/2003EP1034593B1 Power flow control
09/24/2003CN1444789A System of and method for power management
09/24/2003CN1444321A Resonant voltage and power factor comprehensive compensation method and its equipment
09/24/2003CN1122346C Control equipment for active filters and method for reduction of harmonics in bipolar DC line
09/23/2003US6625520 System and method for operating electric power systems utilizing optimal power flow
09/23/2003US6624532 System and method for utility network load control
09/18/2003WO2003077398A2 Separate network and method for operating a separate network
09/18/2003WO2003076857A2 A domestic combined heat and power unit
09/18/2003US20030173939 Method for operating a transformer from a drivable voltage source, as well as an apparatus for carrying out the method
09/18/2003US20030173938 Reactive power control
09/18/2003CA2476883A1 Separate network and method for operating a separate network
09/18/2003CA2468459A1 A domestic combined heat and power unit
09/17/2003EP1344295A1 A device and a method for voltage control in an electric transmission network
09/17/2003EP1344294A1 Household appliance provided with energy management
09/17/2003CN2574278Y Intelligent throw-over surge-lesls dynamic reactive compensation system
09/17/2003CN2574277Y Self-feed integral power system filter device
09/17/2003CN2574276Y High-performance passive single-phase filter circuit
09/17/2003CN2574275Y Multifunctional high-efficiency power saver
09/17/2003CN1121743C Power supply system for electric appliance such like motors
09/16/2003US6622097 Method and apparatus for reading and controlling electric power consumption
09/16/2003US6621181 Battery storage for grid scale power within rights-of-way
09/16/2003US6621180 Method and system for maintaining full power during a power interruption in a multiple power supply system
09/16/2003US6621179 Device for curtailing electric demand
09/12/2003WO2003075430A1 Uninterruptible power supply
09/12/2003WO2003075427A1 Setting device of distributed energy supply system
09/12/2003WO2003075126A2 One wire self referencing circuits for providing power and data
09/11/2003US20030171884 Arrangements to detect and respond to disturbances in electrical power systems
09/11/2003US20030171851 Automatic energy management and energy consumption reduction, especially in commercial and multi-building systems
09/11/2003US20030169109 Active harmonic suppression equipment and control method therefor
09/10/2003CN2572643Y Adjustable reactive power compensator
09/10/2003CN1441990A Power system utilizing DC bus
09/10/2003CN1441525A Power economizer
09/09/2003US6618648 Control system method of protectively controlling electric power system and storage medium storing program code
09/04/2003WO2003073580A2 Processing system for a power distribution system
09/04/2003WO2003073576A2 Method and apparatus for ground fault protection
09/04/2003WO2003073572A2 Method and apparatus for optimized centralized critical control architecture for switchgear and power equipment
09/04/2003WO2003073571A2 External clock to obtain multiple synchronized computer
09/04/2003WO2003073454A2 Circuit breaker lockout
09/04/2003WO2003073312A1 Method and apparatus for minimally invasive network monitoring
09/04/2003WO2003073224A2 Electrical protection system for reliability improvement based on sensitivity analysis
09/04/2003WO2003073221A2 Integrated protection, monitoring and control system
09/04/2003WO2003073214A2 Method for communicating information bundled in digital message packets
09/04/2003WO2003073190A1 Modular ac voltage supply and algorithm for controlling the same
09/04/2003WO2003073188A1 Configuring a centrally controlled circuit breaker protection system
09/04/2003WO2003073182A1 Method and apparatus for optimizing a redundant critical control system
09/04/2003WO2003073181A1 Data sample and transmission modules for power distribution systems
09/04/2003WO2003073180A1 Method and apparatus for circuit breaker node software architecture
09/04/2003WO2003073179A1 Method and apparatus for node electronics unit architecture
09/04/2003WO2003073178A1 Method and system for conditionally triggered system data capture
09/04/2003WO2003073177A1 Method for power distribution system components identification, characterization and rating
09/04/2003WO2003073176A1 Protection system for power distribution systems
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