Class 307/103 - WITH LINE DROP COMPENSATION

Subclass of Class 307 - Electrical transmission or interconnection systems
Definition: Subject matter relating to line drop compensators.
No. of patents: 40
Last issue date: 01/24/2012

Number	Title	Issue Date
8102079	Dynamic voltage compensator used in three-phase power supply system A dynamic voltage compensator for compensating voltage fluctuations in a three-phase power supply system that includes two dynamic voltage restorers (DVR), and two phases are selected arbitrarily from the three-phase power supply system with each selected power supp...	01/24/2012
8039994	Reduction of inrush current due to voltage sags Various systems and methods are provided for minimizing an inrush current to a load after a voltage sag in a power voltage. In one embodiment, a method is provided comprising the steps of applying a power voltage (100) to a load (246), and detecting a ...	10/18/2011
8035254	Method and apparatus for integrated cable drop compensation of a power converter An integrated circuit controller for a power converter to be coupled to a distribution network is disclosed. An example integrated circuit controller according to aspects of the present invention includes a switching control circuit that outputs a drive signal to co...	10/11/2011
7791223	Method and device for preventing the disconnection of an electric power generating plant from the electrical grid Procedures to prevent the disconnection of a park of electricity generators from a network in the event of a voltage sag, through which, upon detection of the sag, the voltage travelling to the network is controlled in proportion to the magnitude of the sag; the act...	09/07/2010
7629711	Load independent voltage regulator An integrated circuit package (202) includes a voltage regulator (208) and a power-out pin (236) for coupling to a load circuit (210) via a connection (234) external to the integrated circuit package and for coupling to an output (...	12/08/2009
7605499	Systems and methods of dynamic reactive support for a power transmission system Systems and methods of dynamic reactive power support for a power transmission system are provided. In one embodiment, a method of dynamic reactive power support for a power transmission system includes at least one circuit breaker connecting a shunt capacitor bank ...	10/20/2009
7541696	Systems and methods for voltage SAG compensation A voltage sag compensation system includes a capacitor charging and discharging module connected to an AC rectifier and to an inverter, a two stage voltage detector configured to detect a degree of voltage sag that is present on a power line, and an inverter gating ...	06/02/2009
RE40528	Voltage fluctuation compensating apparatus Voltage compensating circuits are connected serially to a power system, including capacitors each having different charging voltages (in relationship of approximately 2k (K=0, 1, 2, . . . ) times the smallest charging voltage value). The voltage compensat...	10/07/2008
7400126	DC regulated power supply having voltage correction In a DC regulated power supply realized as AC adapter or the like by a switching power supply, a reference voltage correction circuit, which estimates a voltage drop corresponding to a load current, corrects to increase an output voltage by changing a feedback refer...	07/15/2008
7375443	CPU surge reduction and protection Methods and systems of providing power to a central processing unit (CPU) provide for enhanced surge protection during CPU current consumption going from high current to low current consumption. In one approach, a circuit as a power output stage with an output node,...	05/20/2008
7345379	Power converter with voltage and current fault setting A power converter includes a steady-state controller for outputting a first voltage command such that a detected power value matches a power command, a transient controller for outputting a second voltage command such that a voltage detected before the occurrence of...	03/18/2008
7310509	Software and protocol structure for an automated user notification system The present invention provides an automated user notification system for monitoring user items and notifying a user when selected conditions occur. A first portion of the notification system comprises a network operations center (NOC). The NOC stores user informatio...	12/18/2007
7277265	Robust power take-off and cruise enable Apparatus are provided for robust power take off (PTO) and/or cruise enable. The apparatus includes a control module for PTO enable having a first input connected to one of a first reference voltage and a second reference voltage, and a second input connected to one...	10/02/2007
7233081	Power-supply device A power-supply device suppresses high harmonic waves, controls the flow of AC power, and minimizes adverse effects on a load that might otherwise be caused by a large surge of current into the load during the startup or stopping of the power-supply device. The power...	06/19/2007
7218122	Power disturbance generator An apparatus selectively generates a disturbance in a three-phase supply voltage provided to a load. The apparatus includes input connections for receiving a first phase voltage, a second phase voltage and a third phase voltage of the three-phase supply voltage. The...	05/15/2007
7218015	Method of providing a constant AC voltage to a remote variable load To the end of providing a constant AC voltage to a variable load (1) which is arranged remote of a voltage source (3), a voltage drop over an electrical supply line (2) which connects the load to the voltage source (3) is compensated for ...	05/15/2007
7146265	Control device with time measuring function A control device with a time measuring function measures a turned-off time of an ignition switch with a low consumption current and high accuracy at a level adapted for a demand from the controlling side, as well as a turned-on time of the ignition switch. The contr...	12/05/2006
7116011	CPU surge reduction and protection Methods and systems of providing power to a central processing unit (CPU) provide for enhanced surge protection and increased battery life. In one approach, an integrated circuit as a power output stage with an output node, and a voltage regulator coupled to the pow...	10/03/2006
7112898	Real-time digital voltage sag compensator An economical digital voltage sag compensator for overcoming sags in distributed electrical power. The voltage sag compensator employs an inexpensive micro-controller, a full wave bridge rectifier, a DC power supply, a voltage divider and an output switch. The micro...	09/26/2006
7105948	Apparatus for the voltage maintenance of an electrical AC voltage supply network and method for operating such an apparatus A method and apparatus for the voltage maintenance of an electrical AC voltage supply network comprising a partial converter system, which has a first branch pair and a second branch pair connected in parallel therewith and an electrical energy store connected in pa...	09/12/2006
7091632	Stabilization circuit for compensating fluctuations in a voltage at a user A stabilization circuit wherein voltages of the secondary winding of a transformer are stabilized with respect to mains voltage fluctuations and load fluctuations, an auxiliary voltage is derived either from a secondary winding of the transformer or an auxiliary tra...	08/15/2006
6999294	Waveguide A waveguide which is particularly suitable for transmitting electrical signals between or to and/or from electronic circuits, for example between integrated circuits disposed on a printed circuit board, has an over-voltage protection region. The over-voltage region ...	02/14/2006
6998732	Power system for supplying stable power A distributed power system, wherein a backup boost transformer is connected between a PFC transformer and a FE DC transformer. The backup boost transformer is also parallel connected with a diode. The backup boost transformer only operates in the sustaining time, if...	02/14/2006
6956305	Voltage fluctuation compensating apparatus Voltage compensation circuits connect DC voltages accumulated in capacitors having respectively different charging voltages which are 2K (where K=0, 1, 2, . . . ) times the minimum voltage into AC voltages. The voltage compensation circuits are...	10/18/2005
6906434	Electric utility system with superconducting magnetic energy storage a voltage recovery device is configured to provide real and reactive power to a utility power network at a sufficient level and for a sufficient duration to recover the voltage on the utility power network within a predetermined proportion of the nominal voltage, fo...	06/14/2005
6812592	Voltage fluctuation compensating apparatus Voltage compensating circuits are connected serially to a power system, including capacitors each having different charging voltages (in relationship of approximately 2k (K=0, 1, 2, . . . ) times the smallest charging voltage value). The voltage compensat...	11/02/2004
6788557	Single conversion power converter with hold-up time A power converter is provided that operates with a wide range input and provides the required hold up time using a smaller, less costly hold-up capacitor. A charging circuit is provided to charge a capacitor through an auxiliary winding. The power converter includes...	09/07/2004
6759765	Sag generator with plurality of switch technologies A voltage sag generator for alternating current power systems intentionally creates power quality disturbances. The sag generator combines different switching technologies to optimize power dissipation and transition performance. ...	07/06/2004
6750563	Voltage sag and over-voltage compensation device with pulse-width modulated transformer A voltage sag and over-voltage compensation device for an AC electric power distribution system employing cascaded switching devices and a pulse-width modulated transformer. Each stage of the cascaded switching device includes a switching element located within a fu...	06/15/2004
6628014	Cable voltage drop compensation in an electric power supply system For compensation of voltage drop in a multi-conductor cable (3) connecting an electric multi-phase power source (1) with a consumer installation (4), in particular for supply of ground power to aircraft standing in airport parking positions, adjustment of...	09/30/2003
6555934	Method and apparatus for control of large-area ground plane potentials A method for controlling ground plane voltages by locally, at one or more discrete points on the working ground reference, sensing a voltage difference between a working ground reference and an isolated ground reference, generating a voltage compensation ...	04/29/2003
6327162	Static series voltage regulator A static series voltage regulator (SSVR) for an electric power distribution system protects a load on a feeder branch from voltage dips by boosting voltage under certain conditions. The SSVR contains a 3-phase voltage source inverter and a source bridge, ...	12/04/2001
5744877	Downhole power transmission system A system for providing large quantities of power at a selected voltage to a downhole well tool. A conductor extends between a surface regulator and the well tool. The voltage is continuously measured downhole at the well tool, and a signal proportional to...	04/28/1998
5414304	Device for suppressing voltage drops In a device for suppressing voltage drops in apparatuses which can be connected with a battery via at least two lines, one line serves to supply voltage permanently and the other line can be switched on or off via a switch. To prevent voltage drops which ...	05/09/1995
5200644	Air conditioning system having battery for increasing efficiency An air conditioning system comprises a converter for converting a commercial AC into DC, an inverter for reconverting the DC into an AC having a predetermined frequency corresponding to an air conditioner load, a compressor driven with the AC from the inv...	04/06/1993
5111376	Voltage balancing circuit Prior voltage balancers for three-phase inverters are useful only with inverters which are not in wide use today. In order to overcome this problem, a voltage balancing circuit for a commonly used inverter balances N phase voltages produced on N output li...	05/05/1992
4931664	Controller for coded surface acoustical wave (SAW) security system A controller for a motor vehicle security system. The controller has a SAW device adapted to receive a signal and to generate a reply signal. A decoder is connected to the SAW device for decoding the reply signal. A comparator compares the reply signal to...	06/05/1990
4367507	Apparatus for clearing faults on untransposed transmission lines using single phase switching A switched four-legged reactor bank which operates in combination with line circuit breakers can be used to extinguish faults on untransposed transmission lines. It comprises three shunt reactors, a neutral reactor and three switches for performing high s...	01/04/1983
4249087	Power supply arrangement for a number of functional units distributed along a transmission line A power supply system for a number of functional units distributed along a transmission in which each unit gets its supply from a constant voltage circuit connected across the transmission line. Each unit may have a low power and a high power state. The p...	02/03/1981
4004191	Method of reducing current unbalance in a three-phase power transmission line operating with one faulty phase A method for reducing current unbalance in the electric system of a three-phase A.C. power transmission line operating in an incomplete phase regime using the wires of the line and transformers electrically coupled thereto. A disconnected wire of the line...	01/18/1977

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Class 307/103 - WITH LINE DROP COMPENSATION