Inductor With Or In A Bridge Patents (Class 323/363)
  • Patent number: 10326269
    Abstract: A fault current limiter system including a fault current limiter and a variable shunt current splitting device. The current splitting device includes first and second conductive windings, wherein the first conductive winding is connected in parallel with the fault current limiter and is configured to carry current in a first direction. The second conductive winding is electrically connected in series with the fault current limiter and is configured to carry current in a second direction opposite to the first direction so that the reactance of the first winding is negated by the reactance of the second winding during steady state operation of the fault current limiter system. Thus, a first portion of a steady state current is conveyed through the fault current limiter and a second portion of the current is conveyed through the current splitting device. The steady state current load on the fault current limiter is thereby reduced.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: June 18, 2019
    Assignee: VARIAN SEMICONDUCTOR EQUIPMENT ASSOCIATES, INC.
    Inventor: Kasegn D. Takletsadik
  • Patent number: 10004556
    Abstract: A tissue-resecting probe includes an elongated outer sleeve extending about an axis to a distal housing having a first window for receiving tissue. An edge of the first window has a dielectric surface. A rotatable inner sleeve has a second window, and at least a portion of an edge of the second window provides a first polarity electrode. Rotation of the inner sleeve within the outer sleeve moves the probe between window-open and window-closed configurations to resect tissue.
    Type: Grant
    Filed: May 12, 2014
    Date of Patent: June 26, 2018
    Assignee: Corinth MedTech, Inc.
    Inventors: Benedek Orczy-Timko, Csaba Truckai, Aaron Germain
  • Patent number: 9568925
    Abstract: In a fuel cell system which controls an operation of a converter on the basis of a duty command value including a feedforward term, the deterioration of a response of the converter at a time of a rapid increase (a rapid decrease) of a load is suppressed. There is disclosed a fuel cell system comprising a converter disposed between a fuel cell and a load device, and a controller for controlling the operation of the converter on the basis of the duty command value including the feedforward term, wherein the controller calculates the feedforward term by use of a command value of a physical amount concerning the converter in an operation range where a requested power from the load device is in excess of a predetermined threshold value.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: February 14, 2017
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Tomohiko Kaneko
  • Patent number: 8456450
    Abstract: An AC-to-DC adapter may be provided in order to increase the sensitivity of a touch-sensitive surface. Such an AC-to-DC adapter may include a rectifying circuit to rectify incoming AC signals. The rectifying circuit may take the form of a diode bridge network that includes four diode branches. Stabilization circuits may be provided in parallel with each diode branch in order to decrease the impedance of the diode bridge network during particular periods of operation. The stabilization circuits may be configured such that the impedance of the diode bridge network is substantially constant during all periods of operation. As a result, the impedance of the AC-to-DC adapter may be relatively constant during all periods of operation. In turn, the sensitivity of a touch-sensitive surface of a device being powered by such an AC-to-DC adapter may increase.
    Type: Grant
    Filed: June 28, 2007
    Date of Patent: June 4, 2013
    Assignee: Apple Inc.
    Inventors: Brian Land, Steven P. Hotelling, Gus Pabon, Benjamin B. Lyon
  • Patent number: 8314602
    Abstract: A converter cell module and a voltage source converter system. The converter cell module includes at least two switching elements, means for energy storage and an autotransformer. The autotransformer is arranged to bypass the converter cell module in the case of failure occurring in the converter cell module.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: November 20, 2012
    Assignee: ABB Technology AG
    Inventors: Falah Hosini, Jan R. Svensson, Jean-Philippe Hasler
  • Patent number: 8203417
    Abstract: An inductor assembly includes a first inductor, a second inductor being magnetically coupled to the first inductor, and a third inductor being magnetically coupled to said first and second inductors. The third inductor may be connected to a variable resistor adapted for adjusting the magnetic coupling between the first and the second inductors by varying a resistance value of said variable resistor.
    Type: Grant
    Filed: August 5, 2009
    Date of Patent: June 19, 2012
    Assignee: ST-Ericsson SA
    Inventors: Christophe Cordier, Sebastien Jacquet
  • Patent number: 8198882
    Abstract: A power converting device converts a DC voltage input from an external power source into an AC voltage output across an output capacitor of an output circuit, and includes a coupling circuit having series first and second windings. A rectifying diode has a grounded anode coupled to an anode of a clamp diode, and a cathode coupled to the second winding. A cathode of the clamp diode is coupled to a clamp switch and the first winding. A full-bridge circuit includes a first series connection of first and second switches, and a second series connection of third and fourth switches. The first and second series connections are coupled in parallel between the first winding and ground. The output capacitor is coupled between a first common node between the first and second switches, and a second common node between the third and fourth switches.
    Type: Grant
    Filed: May 21, 2009
    Date of Patent: June 12, 2012
    Assignee: Hungkuang University
    Inventors: Rou-Yong Duan, Chao-Tsung Chang
  • Patent number: 8102147
    Abstract: Disclosed are a wireless multi-charger system capable of saving the total charging time of a large number of wireless power transmission devices since one wireless multi-power transmission device includes a plurality of the wireless power transmission devices so that a large number of the wireless power transmission devices can be charged with electricity, and preventing the damage of the wireless power transmission devices and the wireless multi-power transmission device although foreign substances are put on charger blocks that are not charged.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: January 24, 2012
    Inventor: Chun-Kil Jung
  • Publication number: 20110309803
    Abstract: In one embodiment, a method for switching an electrical load having at least one capacitive component and one inductive component in a bridge branch of a bridge circuit comprises a charging of the bridge branch to a first voltage (V1) in a forward switching phase (F), a discharging of the capacitive component of the electrical load in a first open switching phase (O1), a charging of the bridge branch to a second voltage (V2) in a reverse switching phase (R), with the second voltage (V2) being polarized inversely from the first voltage (V1), and a negative charging of the capacitive component of the electrical load in a second open switching phase (O2). A bridge circuit is also provided.
    Type: Application
    Filed: April 19, 2011
    Publication date: December 22, 2011
    Applicant: AUSTRIAMICROSYSTEMS AG
    Inventors: Andreas FITZI, Stephan DOBRETSBERGER
  • Patent number: 7652387
    Abstract: A generator is connectable to a turbine for generating electric power or a motor. An electric power generator system or a motor comprises an asynchronous short-circuited rotor generator or motor comprising a stator, a rotor, and a transformer having a first winding and a second winding, the first winding having a first end and a second end. The stator and the transformer are connectable in series with an electric power distribution grid.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: January 26, 2010
    Assignee: Wind To Power Systems, S.L.
    Inventors: Jose Manuel Corcelles Pereira, Jose Luis Rodriguez-Amenedo, Santiago Arnaltes-Gómez
  • Publication number: 20090167285
    Abstract: The present invention discloses a resonance circuit for use in an H-bridge DC-DC converter, the resonance circuit comprising: an H-bridge converter, capable of converting unstable DC power into stable DC power; a first resonance circuit, disposed on a buck side of the H-bridge converter for reducing the turn-off loss of a first active switching element; and a second resonance circuit, disposed on a boost side of the H-bridge converter for reducing the turn-on loss of a second active switching element. The H-bridge converter comprises: a first active switching element and a second active switching element; a coupled inductor with dual windings capable of storing energy; and a first passive switching element and a second passive switching element.
    Type: Application
    Filed: June 24, 2008
    Publication date: July 2, 2009
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: YUNG-FU HUANG, YOSHIHIRO KONISHI, MIN-JU HSIEH
  • Publication number: 20090051346
    Abstract: A DC/DC converter includes a reactor, IGBT devices, a dead time generation unit, and a DC-CPU. The dead time generation unit operates in response to a reference signal for a duty ratio, to output first and second activation signals provided with an inactive period corresponding to a dead time preventing both of the IGBT devices from conducting. The DC-CPU corrects a tentative duty ratio calculated as based on a voltage control value, in accordance with a value of a current flowing through the reactor, to output the reference signal. Preferably the DC-CPU associates the value of the current of the reactor with three states and when the value approaches a value at which a state transitions to a different state, the DC-CPU gradually switches a correction value.
    Type: Application
    Filed: March 30, 2006
    Publication date: February 26, 2009
    Inventors: Kota Manabe, Masahiro Shige
  • Publication number: 20090002343
    Abstract: An AC-to-DC adapter may be provided in order to increase the sensitivity of a touch-sensitive surface. Such an AC-to-DC adapter may include a rectifying circuit to rectify incoming AC signals. The rectifying circuit may take the form of a diode bridge network that includes four diode branches. Stabilization circuits may be provided in parallel with each diode branch in order to decrease the impedance of the diode bridge network during particular periods of operation. The stabilization circuits may be configured such that the impedance of the diode bridge network is substantially constant during all periods of operation. As a result, the impedance of the AC-to-DC adapter may be relatively constant during all periods of operation. In turn, the sensitivity of a touch-sensitive surface of a device being powered by such an AC-to-DC adapter may increase.
    Type: Application
    Filed: June 28, 2007
    Publication date: January 1, 2009
    Inventors: Brian Land, Steve Hotelling, Gus Pabon, Benjamin B. Lyon
  • Patent number: 7442263
    Abstract: The invention relates to a transductor regulator with a magnetic core which is made up of a nanocrystalline alloy which is almost free of magnetorestriction. The core has as low cyclic magnetization losses as possible and as rectangular a hysterisis cycle as possible. Said alloy has the composition: FeaCobCucM?dSixByM?z, M? representing an element from the group V, Nb, Ta, Ti, Mo, W, Zr, Hf or a combination of these and M? representing an element from the group C, P, Ge, As, Sb, In, O, N or a combination of these and the following conditions applying: a+b+c+d+x+y+z=100%, with a=100%?b?c?d?x?y?z, 0?b?15, 0.5?c?2, 0.1?d?6, 2?x?20, 2?y?18, 0?z?10 and x+y>18. The inventive transductor regulators are particularly advantageously used in motor vehicle voltage supplies, rail power supplies or in aircraft power supplies.
    Type: Grant
    Filed: September 7, 2001
    Date of Patent: October 28, 2008
    Assignee: Vacuumschmelze GmbH & Co. KG
    Inventors: Wulf Günther, Roman Klinger, Werner Loges, Jörg Petzold
  • Patent number: 7429853
    Abstract: A series resonant circuit device and a voltage stabilizing method thereof are provided. The series resonant circuit device includes a resonant circuit having at least a resonant capacitor and a resonant inductor, an equivalent capacitor electrically coupled to the resonant circuit, a magnetizing inductor electrically connected to the equivalent capacitor in parallel, a transformer having a primary winding electrically connected to the magnetizing inductor in parallel, and a current impulse circuit electrically coupled to the resonant circuit and synchronized with an input voltage of the series resonant circuit device. The voltage stabilizing method is to provide a current impulse to the equivalent capacitor so as to decrease a current difference between the resonant inductor and the magnetizing inductor when the input voltage varies.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: September 30, 2008
    Assignee: Delta Electronics, Inc.
    Inventors: Qing-You Zhang, Guo-Dong Yin, Zhi-Ying Chen, Jun-Feng Guan, Jian-Ping Ying
  • Patent number: 7405955
    Abstract: The present invention provides a switching power supply unit and a voltage converting method capable of suppressing a surge voltage applied to an output rectifier element more effectively. Energy in the direction of suppressing reverse voltages (surge voltages) applied to a plurality of rectifier diodes is injected into a rectifier circuit. Reverse voltages applied to the plurality of rectifier diodes are maintained to be lower than a voltage to be inherently applied for a predetermined period. Therefore, rise in the surge voltage is suppressed and rectifier elements (rectifier diodes) having low withstand voltage can be used.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: July 29, 2008
    Assignee: TDK Corporation
    Inventor: Wataru Nakahori
  • Patent number: 7327542
    Abstract: In a current limiter for limiting currents in case of a fault including an additional device comprising an additional electric valve connected in series and being conductive in the same direction as the associated main valve, two series-connected valve branches arranged in opposition bypass two series connected current limiting inductors and both additional valves are bypassed by a similar passively complex connection for limiting current in the case of a fault, wherein the current limiter is not noticeable during normal operation, but, in the event of a fault, effectively limits the short circuit to a predetermined extent.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: February 5, 2008
    Assignee: Forschungazentrum Karlsruhe GmbH
    Inventors: Klaus-Peter Juengst, Mathias Noe, Grigory Kuperman
  • Patent number: 6944036
    Abstract: In those conventional arts, a DC/DC converter with secondary clamp circuit has a problem of voltage oscillation, and a DC/DC converter with primary clamp circuit has problems of heat and clamping losses due to larger forward and reverse currents passing the primary clamp circuit. The present invention applies a tapped inductor or a set of coupling inductors to a DC/DC converter with primary clamp circuit for reducing the voltage oscillation, and furthermore to decrease the forward and reverse current passing through the clamp circuit for reducing the clamping losses of the clamp circuit.
    Type: Grant
    Filed: December 31, 2003
    Date of Patent: September 13, 2005
    Assignee: Delta Electronics, Inc.
    Inventors: Chao Yan, Hongyang Wu, Heoyi Ye, Jianping Ying
  • Patent number: 6867634
    Abstract: A method for detecting a null current condition in a PWM driven inductor connected between a voltage source node and a second circuit node of a line for outputting current to a load includes generating a derivative signal by time differentiating a voltage on the second node. The method further includes monitoring an instant when the derivative signal becomes negative, and signaling verification of the null current condition each time the derivative signal becomes negative.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: March 15, 2005
    Assignee: STMicroelectronics S.r.l.
    Inventors: Natale Aiello, Francesco Giovanni Gennaro
  • Publication number: 20040217752
    Abstract: A flyback power supply device and its control method that can exactly switch off the switch component each time when the output voltage of the transformer is changed from positive to negative. The power supply device includes a transformer, a primary and secondary switch circuit. The primary and secondary switch circuits are connected with the primary and secondary sides of the transformer, respectively. The secondary switch circuit includes a control circuit and a switch component. The control circuit is used to keep the voltage across the switch component fixed and make the resistance of the switch component inversely proportional to the output current of the transformer. As the output current of the transformer changes as an inverse triangle, the resistance of the switch component will approach infinite when the output current is zero and the switch component will be switched off automatically to make the power supply device function well.
    Type: Application
    Filed: May 1, 2003
    Publication date: November 4, 2004
    Applicant: Niko Semiconductor Co., Ltd.
    Inventor: Hui Chiang Yang
  • Patent number: 6678175
    Abstract: The invention replaces a snubber resistor with a two diodes and a load. The electric charge stored in the snubber capacitor on each cycle of the switch is then caused by a first diode to flow through the load, rather than to flow through a snubber resistor. A second diode provides a charging path for the snubber capacitor. The load uses the electric power which would be wasted in the snubber resistor.
    Type: Grant
    Filed: August 15, 2002
    Date of Patent: January 13, 2004
    Assignee: Galaxy Power, Inc.
    Inventors: Andrew Ferencz, Gregory A. Zvonar, William Ng, Bernhard Schroter
  • Patent number: 6087822
    Abstract: A power transformer with internal differential mode distortion cancellation, comprising a primary coil for connection to a power source providing a fundamental frequency power signal, a secondary coil for connection to an electrical load, a magnetic core intermediate the primary coil and secondary coil for providing mutual magnetic couplings of signals therebetween, a further coil connected with opposite phase to one of either the primary coil and the secondary coil, and a high-pass filter connected in series with the further coil for attenuating said fundamental frequency power signal while passing high frequency distortion signals substantially unattenuated, whereby the high frequency distortion signals are canceled in the magnetic core.
    Type: Grant
    Filed: October 7, 1999
    Date of Patent: July 11, 2000
    Assignee: ir.buro Vanderveen
    Inventor: Menno van der Veen
  • Patent number: 5812353
    Abstract: A current limiter arrangement particularly adapted to be positioned at a substation of an electrical power system for limiting the fault current for a predetermined period of time to permit protective devices positioned downstream in the network to clear the fault. If the fault is not cleared and the fault persists for a predetermined period of time the current limiting arrangement acts as a circuit breaker to open the load circuit. The arrangement includes an SCR bridge having a superconducting coil connected across two nodes. A novel gate pulse firing circuit generates two pulses per ac cycle for application to the gates of the SCR's of the bridge at 90.degree. and 270.degree. of each 360.degree. cycle and is ON at all times to provide for prompt dc charging of the super conducting coil with no ac load current and non-fault conduction of ac current at less than the maximum current limit.
    Type: Grant
    Filed: October 15, 1996
    Date of Patent: September 22, 1998
    Assignee: Lockheed Martin Corporation
    Inventors: Gary W. Albert, Kenneth B. Muehleman
  • Patent number: 4513608
    Abstract: A moisture sensing element is provided and is constructed of a body having therein a first zone formed of porous material with a first range of pore size having a first mean pore size and a second zone formed of a porous material with a second range of pore size having a second mean pore size such that in use the body is located within a desired soil area under surveillance whereby both the first and second zones are placed in hydraulic conduction with the desired soil area. The first mean pore size is substantially greater than the second mean pore size such that the second zone will remain hydrated when the first zone is becoming dehydrated. Electrode elements are associated with each of the first and second zones in spaced relation and define therebetween respective electric current flow paths through each of the first and second zones for sensing an electrical property of each of the zones.
    Type: Grant
    Filed: November 9, 1982
    Date of Patent: April 30, 1985
    Inventor: Kenneth J. Cuming
  • Patent number: 4490769
    Abstract: A thyristor bridge interposes an ac source and a load. A series connected DC source and superconducting coil within the bridge biases the thyristors thereof so as to permit bidirectional ac current flow therethrough under normal operating conditions. Upon a fault condition a control circuit triggers the thyristors so as to reduce ac current flow therethrough to zero in less than two cycles and to open the bridge thereafter. Upon a temporary overload condition the control circuit triggers the thyristors so as to limit ac current flow therethrough to an acceptable level.
    Type: Grant
    Filed: August 16, 1982
    Date of Patent: December 25, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Heinrich J. Boenig
  • Patent number: 4438474
    Abstract: A current control device which may act as a current limiter and/or a VAR generator through the use of a superconducting inductor is taught. In one of the embodiments of the present invention, a full wave bridge rectifier network is serially inserted in one leg of a high voltage transmission system. The output of the full wave bridge network has connected between it a superconducting coil in series with a bias supply. The biasing supply circulates current in the inductor. Should the line current exceed the value of the current circulating in the inductor, the inductor impedes the increase of current giving sufficient time for current interruption devices, should they be utilized, to operate. Additionally, the biasing supply may act as a VAR generator by controlling the current in the superconductor or in the power supply feeding it.
    Type: Grant
    Filed: May 12, 1982
    Date of Patent: March 20, 1984
    Assignee: Westinghouse Electric Corp.
    Inventor: Derek A. Paice
  • Patent number: 4275345
    Abstract: An a.c. circuit including a thermistor used as a variable resistance device. A d.c. current source is provided for varying the temperature, and hence the resistance, of the thermistor and a DVM is provided for giving an indication of the resistance thereof and/or for controlling the temperature varying current source in order to set the resistance of the thermistor to a defined resistance. The thermistor can form part of an a.c. bridge and the temperature varying current source can be arranged to adjust the resistance of the thermistor until the bridge is balanced.
    Type: Grant
    Filed: October 23, 1978
    Date of Patent: June 23, 1981
    Inventor: David A. G. Tait