| Patents for H02J 3 - Circuit arrangements for ac mains or ac distribution networks (38,663) |
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| 09/08/1999 | EP0939994A1 A method for reconstruction of a plant for transmitting electric power as well as such a plant |
| 09/08/1999 | CN2337708Y Silicon controlled harmonic cancellation apparatus with electronic counting |
| 09/07/1999 | US5949660 Switched-mode power supply having a standby mode |
| 09/07/1999 | US5949229 Power factor correction circuit having an error signal multiplied by a current signal |
| 09/07/1999 | US5949221 Line powered, primary side connected apparatus injecting voltage compensation into an electric power line using one transformer |
| 09/07/1999 | US5949153 Multi-engine controller |
| 09/02/1999 | WO1999044276A1 Voltage controller for supply of three-phase unbalanced load from static inverter |
| 09/01/1999 | CN2336505Y Reactive compensator |
| 09/01/1999 | CN2336504Y Automatic dynamic reactive compensation arrangement |
| 08/31/1999 | US5946205 Power conversion system with series connected self-commutated converters |
| 08/31/1999 | US5946172 Installation for power transmission by means of high-voltage direct current, comprising device for detection of a permanent ground fault |
| 08/31/1999 | US5945813 Single or isolated operation detecting apparatus for a distributed power supply |
| 08/31/1999 | CA2208330C Controller for power transducers |
| 08/26/1999 | WO1999043075A1 Impedance angle control method |
| 08/26/1999 | WO1999043067A1 Control equipment for active filters and a method for reduction of harmonics in a bipolar dc link |
| 08/26/1999 | WO1999027629B1 Anti-islanding method and apparatus for distributed power generation |
| 08/25/1999 | CN2335295Y Reactive power regulator |
| 08/25/1999 | CN2335294Y Three-phase reactive power automatic compensator |
| 08/24/1999 | US5943244 System for optimizing a network plan and method of operation |
| 08/24/1999 | US5942880 Compensation control device for a power system |
| 08/18/1999 | EP0784882B1 A power transmission system for high-voltage direct current |
| 08/18/1999 | CN1226347A 电磁装置 Electromagnetic devices |
| 08/17/1999 | US5939803 System for off-mains switching of current consuming devices such as actuators |
| 08/12/1999 | WO1999031612A3 Computerized management and tracking of utility consumption |
| 08/11/1999 | EP0934618A1 Circuit for stabilizing an ac power line |
| 08/11/1999 | EP0934617A1 Method and device for compensating reactive current portions by means of a compensation arrangement with a pulse current rectifier |
| 08/11/1999 | CN1225753A Rotating electrical machine plant |
| 08/11/1999 | CN1225743A 变压器/电抗器 Transformer / reactor |
| 08/10/1999 | US5936856 Method and apparatus for active common-mode voltage compensation in induction motor systems |
| 08/10/1999 | US5936318 Power distribution arrangement especially in an aircraft |
| 08/05/1999 | WO1999039420A1 Neutral point connected apparatus providing compensation to an ac power line |
| 08/05/1999 | WO1999017426A3 An electric power plant with electric machine and auxiliary power means |
| 08/04/1999 | CN2332113Y Automatic control device for power supply of satellit TV. ground receiving station |
| 08/04/1999 | CN2332099Y Complementary electric saving apparatus |
| 08/04/1999 | CN1044536C Power converter protecting apparatus for electric power system |
| 08/03/1999 | US5933355 Computer system |
| 07/28/1999 | CN2331114Y High-voltage reactive dispersive compensation device |
| 07/28/1999 | CN2331113Y Dynamic switch-in/off device for use on low-voltage reactive compensating equipment |
| 07/28/1999 | CN1224265A Inverter control unit |
| 07/28/1999 | CN1224264A Compensation control arrangement for power system |
| 07/27/1999 | US5930773 Computerized resource accounting methods and systems, computerized utility management methods and systems, multi-user utility management methods and systems, and energy-consumption-based tracking methods and systems |
| 07/27/1999 | US5927598 Energy management method and apparatus |
| 07/22/1999 | WO1999037016A1 System stabilizer for power generating system |
| 07/21/1999 | CN2330096Y Corona prevention device for 500 KV line wave trap |
| 07/21/1999 | CN1223493A Method for obtaining display fluctuation signal of power supply network |
| 07/21/1999 | CN1044304C Improved power converter device for direct current power supply to an electric arc furnace |
| 07/20/1999 | CA2227523A1 Domestic electric energy control |
| 07/20/1999 | CA2162062C Power system compensator apparatus and power converter apparatus |
| 07/14/1999 | CN1223025A Real-time pricing control system and method regarding same |
| 07/14/1999 | CN1222695A Method of monitoring the functional capability of tap selector |
| 07/13/1999 | US5923103 Switched-output controller apparatus with repeater function and method for constructing same |
| 07/08/1999 | WO1999034500A1 Converter connection assembly with a direct voltage intermediate circuit |
| 07/07/1999 | EP0801836B1 Energy management and building automation system |
| 07/07/1999 | CN2328121Y Electric power transmission device between ship and harbour |
| 07/07/1999 | CN1222265A Method and appts. for filtering electric current supplied to motor |
| 07/07/1999 | CN1222000A Zero transition procedue triggering two-control-three capacitor switching method and appts. |
| 07/06/1999 | US5920468 AC line filter network for video applications |
| 07/01/1999 | WO1999033165A1 Wind turbine and method for operating a wind turbine |
| 07/01/1999 | WO1999032769A1 Constant turbine inlet temperature control of a microturbine power generating system |
| 07/01/1999 | DE19756777A1 Verfahren zum Betreiben einer Windenergieanlage sowie Windenergieanlage A method for operating a wind turbine and wind turbine |
| 06/30/1999 | EP0801833B1 Transmission line power flow controller with unequal advancement and retardation of transmission angle |
| 06/30/1999 | EP0777929A4 Fail-safe lighting system with load shedding and dimming |
| 06/29/1999 | US5917718 Method and apparatus for eliminating overmodulation in a power plant |
| 06/29/1999 | US5917302 Harmonic current attenuating device of a motor |
| 06/29/1999 | US5917253 Live AC mains power selector for redundant systems |
| 06/29/1999 | US5917251 Method and circuit arrangement to cover peak energy demands in electrical alternating or three-phase current networks |
| 06/29/1999 | CA2142490C Electric power system stabilization control apparatus and method thereof |
| 06/24/1999 | WO1999031612A2 Computerized management and tracking of utility consumption |
| 06/24/1999 | WO1999031606A1 Database analysis using a probabilistic ontology |
| 06/24/1999 | DE19757452A1 Current converter circuit arrangement |
| 06/24/1999 | CA2303847A1 Computerized resource accounting methods and systems, computerized utility management methods and systems, multi-user utility management methods and systems, and energy-consumption-based tracking methods and systems |
| 06/22/1999 | US5915148 Network system for copiers |
| 06/22/1999 | US5914540 Filter for removing harmonic current from a neutral conductor |
| 06/16/1999 | EP0923181A1 Multifunction adaptive controls for tapswitches and capacitors |
| 06/16/1999 | EP0922636A1 Power supply regulation and attitude control on solar array equipped spacecraft using flywheel energy storage with programmable voltage control |
| 06/16/1999 | CN1220043A Electric high voltage AC machine |
| 06/16/1999 | CN1220026A DC transformer/reactor |
| 06/16/1999 | CN1219798A Three-phase rectification circuit with power-factor correction and harmonic wave inhibiting circuit |
| 06/16/1999 | CN1219792A Three-phase power supply consisting of single-phase one with correction of power factor |
| 06/10/1999 | WO1999029020A1 Electricity supply system |
| 06/10/1999 | WO1999029008A1 Power flow control |
| 06/10/1999 | WO1999028921A1 Magnetic energy storage |
| 06/10/1999 | DE19753935A1 Electronic circuit for parallel operation of energy generators supplying current network |
| 06/10/1999 | CA2310595A1 Magnetic energy storage |
| 06/10/1999 | CA2310501A1 Electricity supply system |
| 06/10/1999 | CA2309971A1 Power flow control |
| 06/09/1999 | EP0792533B1 A system for off-mains switching of current consuming devices such as actuators |
| 06/09/1999 | CN1219297A Distributed frequency relay |
| 06/08/1999 | US5910889 For use in a power system |
| 06/08/1999 | US5910888 Plant for transmitting electric power |
| 06/03/1999 | WO1999027629A1 Anti-islanding method and apparatus for distributed power generation |
| 06/02/1999 | EP0920116A2 Inverter apparatus for supplying drive power to an electric motor, and filter apparatus for use in the inverter apparatus |
| 06/02/1999 | EP0920104A2 Low voltage network with a filter tuned on a given current harmonic |
| 06/02/1999 | EP0919077A2 High efficiency lighting system |
| 06/02/1999 | CN2322301Y Reactive dynamic compensation multi-stage regulation electric cabinet for distributing transformer on pole |
| 06/02/1999 | CN2322300Y Three-phase voltage-amplitude and phase-balance compensation electricity-saving device |
| 06/02/1999 | CN2321573Y Reactive dynamic compensation electricity-saving box |
| 06/02/1999 | CN1218536A Process and plant for operating block-type thermal power station |
| 06/02/1999 | CN1218327A Method and circuit configuration for power control with low switching surges for electric loads |
| 06/02/1999 | CN1218321A Automatic power factor compensation controller for high and low voltage power network |