Synchronized Or Sequential Opening Or Closing Patents (Class 361/3)
  • Patent number: 10516189
    Abstract: A system for a vehicle includes a pair of electrical buses connected to terminals of a traction battery via a shared positive contactor and a pair of negative contactors. The system further includes a controller configured to, responsive to a request to close the contactors and a difference between voltage magnitudes of the buses being greater than a predefined threshold, actively discharge one of the buses to reduce the difference.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: December 24, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Michael Edward Loftus, Benjamin A. Tabatowski-Bush
  • Patent number: 10483727
    Abstract: A heat management system includes a tank and a thermal siphon attached to the tank. The thermal siphon contains a liquid that absorbs heat via thermal conduction from the tank. The liquid is heated to a vaporization point, and the heat from the vaporized liquid is transferred to cooling fins extending from the thermal siphon.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 19, 2019
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventor: David G. Woolard
  • Patent number: 10483061
    Abstract: A protection device including: (i) a protection component having a first thermal fuse and a resistive body, the resistive body being supplied with a current in an abnormal state to generate heat, the heat activating the first thermal fuse to cut off the current; (ii) a PTC component; and (iii) a second thermal fuse, the second thermal fuse being electrically connected in series to the PTC component, the first thermal fuse of the protection component being electrically connected in parallel to the PTC component and to the second thermal fuse, and the protection component being activated in the abnormal state so that the PTC component trips to generate heat, the heat blowing the second thermal fuse.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: November 19, 2019
    Assignee: LITTELFUSE JAPAN G.K.
    Inventors: Takayuki Yokota, Masaaki Iwai, Hirotsugu Takegawa, Naotaka Ikawa
  • Patent number: 10464426
    Abstract: High-voltage vehicle electrical system comprising a high-voltage battery terminal having a high-side terminal contact and a low-side terminal contact and a high-voltage output having a high-side output contact and a low-side output contact. For reliable isolation of a short-circuit current by using levitation, at least one series circuit arranged between the low-side terminal contact and the low-side output contact and consisting of a first switching relay and a pyrotechnic isolating device is provided.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: November 5, 2019
    Assignee: Auto-Kabel Management GmbH
    Inventors: Simon Betscher, Wacim Tazarine
  • Patent number: 10453632
    Abstract: A direct current switching device for interrupting an electric direct current flowing along a medium or high voltage current path. An electric circuit arrangement has a mechanical switching device connected in the current path and a circuit unit for forcing a zero-crossing point in the mechanical switching device. The circuit unit has multiple capacitive components and a switch which are connected in the circuit unit such that, in a first switching state of the switch, the capacitive components are connected in parallel for a respective electric charging process via the medium or high voltage current path and, in a second switching state of the switch, the capacitive components are connected in series in order to generate a current pulse which forces the zero-crossing point. The direct current switching device is useful for interrupting an electric direct current flowing along the medium or high voltage current path.
    Type: Grant
    Filed: August 19, 2016
    Date of Patent: October 22, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Thomas Heinz
  • Patent number: 10454267
    Abstract: A load protection system and a method of protecting a load. The load protection system includes a PLC transmitter and a PLC receiver, which are configured to communicate a plurality of bits of data, each bit transmitted near a zero-crossing of a voltage on the power lines supplying power to the load, in the form of a high frequency burst of pulses. The pulses are structured in two patterns. The first pattern serves to identify the start of the second pattern, and the second pattern includes the data. The first pattern is unique and not represented within the second pattern. The load may be a motor, and the data may include a parameter value representing a parameter of the motor. A motor controller may evaluate the parameter value to determine whether to institute a warning or alert action, to shut the motor down, or to continue operating.
    Type: Grant
    Filed: June 1, 2018
    Date of Patent: October 22, 2019
    Assignee: Franklin Electric Co., Inc.
    Inventors: Nicholas A. Cooper, Adrian Chavis, Thomas S. Wolf, Zachary K. Foster, Yaritza Brinker, Dalton Paull
  • Patent number: 10438756
    Abstract: In aspects, the present invention discloses a method of determining an electrical operating time of a circuit breaker (140) in a multiphase electrical system having a subsystem (160) connectable to a power source (110) through a circuit breaker (140) operated by a controller (130). The controller is connected to a current transformer (120, 150) for measuring current of the subsystem in a one phase. The method comprises monitoring the current of the subsystem in the one phase, determining a first rate of change from the monitored current in the one phase, detecting an instance of switching in an another phase based on the first rate of change, and determining an electrical operating time of the circuit breaker in the another phase based on the detected instance of switching and an instance at which a command for switching in the another phase was provided to the circuit breaker.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: October 8, 2019
    Assignee: ABB Schweiz AG
    Inventor: Anil Talluri
  • Patent number: 10368167
    Abstract: An apparatus and method for controlling an audio power circuit. The audio power circuit includes an audio amplifier having a power input and a speaker connected to the audio amplifier. The audio power circuit also includes a control circuit configured to be connected to a battery and the power input and to control a supply of power to the power input. The audio power circuit further includes a thermal protection circuit connected between the audio amplifier and the speaker, the thermal protection circuit configured to generate a thermal protection signal and provide the same to the control circuit, wherein the control circuit is further configured to control the supply of power based on the thermal protection signal.
    Type: Grant
    Filed: November 28, 2016
    Date of Patent: July 30, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Chen Kok Yeoh, Joo Yih See, Chin Seng Tan
  • Patent number: 9882502
    Abstract: A pre-charge control method for a hybrid multilevel power converter comprises steps of: (a) controlling access of the current-limiting resistor unit, limiting current from the AC power via the current-limiting resistor unit, and outputting the current; (b) controlling the second capacitor unit to bypass, and charging the first capacitor unit; (c) controlling the access of the second capacitor unit when the first capacitor unit is charged to a third preset voltage, and charging the first and second capacitor units at the same time; (d) controlling the first capacitor unit to bypass when the second capacitor unit is charged to a fourth preset voltage, or the first capacitor unit is charged to a first preset voltage, and charging the second capacitor unit; and (e) controlling the access of the first capacitor units and the current-limiting resistor unit to bypass when the second capacitor unit is charged to a second preset voltage.
    Type: Grant
    Filed: January 5, 2017
    Date of Patent: January 30, 2018
    Assignee: Delta Electronics (Shanghai) Co., LTD.
    Inventors: Wei Xie, Jianfei Zheng, Dingkun Shen, Lan Wei, Jianping Ying, Zhiming Hu, Wei Xu, Wei Tian
  • Patent number: 9679710
    Abstract: A voltage regulator comprising a tap selector switch, a switching module and a switching module controller. The tap selector can comprise stationary contacts and movable contacts which can be adjusted for regulating the voltage between a source and a load. The switching module can comprise first and second bypass switches controlled by a bypass actuator and a non-arcing switch, such as a vacuum interrupter, controlled by an interrupter actuator. The switching module controller can be configured to perform a tap change operation through a series of steps that involve actuating a bypass switch and the non-arcing switch. In one example, the switching module controller can wait a predetermined amount of time before proceeding with each step of the tap change operation. In other examples, the switching module controller can receive signals or measurements from the system before proceeding with each step of the tap change operation.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: June 13, 2017
    Assignee: COOPER TECHNOLOGIES COMPANY
    Inventor: Jonathan Michael Schaar
  • Patent number: 9630512
    Abstract: A system and method for controlling energy of an eco-friendly vehicle are provided and include turning off, by a controller, a main relay in response to sensing interlock by means of a detection circuit and charging a secondary batter by discharging voltage of a capacitor in an inverter to the secondary battery, under control of voltage output from a low voltage DC converter after the main relay is turned off. In addition, the controller is configured to discharge DC-link voltage to a driving motor by operating the inverter after charging the second battery.
    Type: Grant
    Filed: October 24, 2013
    Date of Patent: April 25, 2017
    Assignee: Hyundai Motor Company
    Inventors: Ju Man Yoon, Jong Kyong Lim, Young Kook Lee, Heon Young Kwak
  • Patent number: 9434256
    Abstract: An arrangement and method are provided for stabilizing a voltage applied to a first electric consumer arranged in a vehicle onboard power supply system that includes a second electric consumer. A first voltage supply unit provides a supply voltage; a storage unit stores electric energy; a second voltage supply unit provides a charging voltage; a switching unit is connected to the first consumer, the storage unit, the first voltage supply unit and the second voltage supply unit; and a control unit determines whether a stabilization is to be carried out. If no stabilization is to be carried out, the control unit activates the switching unit such that the first consumer is connected to the first voltage supply unit and, as soon as the stabilization is to be carried out, the first consumer is connected to a series connection formed by the storage unit and the first voltage supply unit.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: September 6, 2016
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Hartmut Proebstle, Rupert Neudecker, Sherif Mahmoud
  • Patent number: 9425011
    Abstract: Provided is a system for soft switching of an electromechanical relay in a lighting control system using a sensor to detect a specified non-zero position in the electrical input waveform. Following this non-zero position, an adaptive time delay is applied before activation of the relay coil. An error detection circuit measures a time error between relay operation and the zero electrical input condition. This error signal is used to update the adaptive time delay for future relay operations. Using such a procedure has been shown to limit electrical stress on the relay, and therefore lengthen its life.
    Type: Grant
    Filed: August 26, 2013
    Date of Patent: August 23, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Jason Creighton, David Christopher Shilling
  • Patent number: 9208979
    Abstract: A high voltage DC breaker apparatus configured to break a fault current occurring in a high voltage DC conductor includes a current limiting arrangement having at least one section with at least one semiconductor device of turn-off type and at least one arrester connected in parallel therewith, and a mechanical DC breaker connected in series with the current limiting arrangement and including a mechanical switch. The mechanical DC breaker is configured to enable breaking of a fault current in said DC conductor once said semiconductor devices of said arrangement have been turned off.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: December 8, 2015
    Assignee: ABB Technology AG
    Inventors: Jurgen Häfner, Gunnar Asplund
  • Patent number: 9159511
    Abstract: A DC current path for DC power transmission includes a switchable element. An inductance is connected in series to the switchable element. When an interrupt scenario is detected, a resonance circuit is connected in parallel to the series connection of the switchable element and the inductance for charging a capacitance of the resonance circuit. An open state of the switchable element is effected and the resonance circuit is connected in parallel to the switchable element. By means of such arrangement and method, favorable fast interrupt times can be achieved.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: October 13, 2015
    Assignee: ABB TECHNOLOGY OY
    Inventor: Jadran Kostovic
  • Patent number: 9041245
    Abstract: A power supply apparatus includes a converter to convert AC power into DC power, an SMPS to convert the DC power into DC powers desired by loads, a capacitor to interconnect the converter and the SMPS, a PTC element connected to the converter, a first switch connected in parallel with the PTC element, and a second switch connected in series with the first switch. The method includes turning on the second switch to start charging of the capacitor, turning on the first switch to charge the capacitor to a target voltage level, and turning off both the first switch and second switch if a voltage across the capacitor rises over the target voltage level, to discharge the voltage across the capacitor so as to lower the voltage across the capacitor to the target voltage level or lower.
    Type: Grant
    Filed: December 6, 2011
    Date of Patent: May 26, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Yoon, Dae Hyun Lim, Joong Ki Moon, Sung Wook Kang
  • Publication number: 20150092304
    Abstract: A device for protection against an electric arc in an electric installation comprising: at least one detection apparatus of the electric arc, at least one short-circuiter establishing a short-circuit for extinction of the electric arc, an electronic control unit of the short-circuiter commanding to an established state of said short-circuit in case of detection of the electric arc by the detection apparatus, and a switchgear apparatus for interrupting said short-circuit at the end of a predefined short-circuit time delay as from the time this short-circuit is established.
    Type: Application
    Filed: November 21, 2012
    Publication date: April 2, 2015
    Applicant: SCHNEIDER ELECTRIC INDUSTRIES SAS
    Inventor: Marc Rival
  • Patent number: 8987945
    Abstract: A control system has an instruction path of which an object section connects a microcomputer, a switch and a switch supervisory device with one another. The switch sets the path in conductive or non-conductive state on the low side of the microcomputer. An instruction signal is sent to the microcomputer through the conductive path to set the microcomputer in an operation state. When the device judges based on the operation state of the microcomputer that the switch has set the path in a conductive state, the device sends a first signal of first voltage, causing the signal to have current strength equal to or higher than predetermined value in the path, to the object section. When the device judges that the switch has set the path in a non-conductive state, the device sends a second signal of second voltage lower than first voltage to the object section.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: March 24, 2015
    Assignee: Denso Corporation
    Inventor: Mitsuhiro Kanayama
  • Patent number: 8922957
    Abstract: A dynamic switch contact protection circuit and technique to protect a channel switch within an electrical system by limiting transients when the switch is turned on or turned off. The protection circuit comprises switching between a high resistance path and a low resistance path. The high resistance path comprises a resistor. A bypass switch is connected in parallel to the resistor to affect the low resistance path. The protection circuit can connect or disconnect switch cards to the electrical system enabling the creation of a larger switching structure. Disconnected switch cards within a switching structure preserves system bandwidth by limiting capacitive loading. Electing which switch to close last or open first can prolong the length of usage of the switches.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: December 30, 2014
    Assignee: Keysight Technologies, Inc.
    Inventors: Bryan D. Boswell, Robert Wayne Leiby, Steven J. Narciso
  • Patent number: 8747288
    Abstract: A robotic tool changer removably attaches a robotic tool to a robotic arm. The changer includes a tool module connected to the robotic tool, and a master module connected to the robotic arm. To attach and detach the robotic tool, the changer couples and uncouples the tool module and the master module. A master electrical signal module (ESM) affixes to the master module and a tool ESM affixes to the tool module. In accordance with design requirements, the changer applies the same power supply to both the master ESM and the tool ESM. The changer, however, selectively suppresses application of the power supply to the tool ESM, while maintaining application of the power supply to the master ESM, during the coupling or uncoupling of the master module and the tool module. In doing so, the changer enables such coupling and uncoupling, while also preventing the formation of transient electric arcs.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: June 10, 2014
    Assignee: ATI Industrial Automation, Inc.
    Inventors: Alexander Strotzer, Michael E. Coyle
  • Patent number: 8619396
    Abstract: An electrical contactor with high DC and AC interrupt capability is disclosed. The invention is intended for applications where load break capability is only required under abnormal operating conditions. Under overload conditions, an alternate path is automatically provided through a sacrificial fuse to divert current from opening, or open and arcing, contacts such that the fuse interrupts the fault current and not the contacts. The current rating of the sacrificial fuse may be orders of magnitude less than the normal carry current of the contactor. The contactor provides a one-time load break function that is renewable by the replacement of a fuse.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: December 31, 2013
    Assignee: Renewable Power Conversion, Inc.
    Inventor: Richard Travis West
  • Patent number: 8614865
    Abstract: The present invention concerns a circuit arrangement (1) for electrically coupling a direct-current source (2) to a direct-current load, including a first and a second current input node (11, 12) for receiving a direct current generated by the direct-current source, a first and a second current output node (21, 22) for the delivery of the generated direct current to the direct-current load, an isolating means (4) connected between the first current input node (11) and the first current output node (21) and/or the second current input node (12) and the second current output node (22) for interrupting the electrical connection between the respective nodes, and an auxiliary switching means (14) connected between the first current input node (11) and the second current input node (12) for short-circuiting of the first and second current input nodes (11, 12).
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: December 24, 2013
    Assignee: Voltwerk Electronics GmbH
    Inventors: Stefan Andresen, Jean Schuetz
  • Patent number: 8564156
    Abstract: Disclosed are an apparatus and method of controlling switch units between a battery pack and a load, and a battery pack and a battery management system comprising the same. The apparatus comprises a memory for storing the turn-off number and order of first and second switch units connecting the battery pack with the load according to current ranges; and a control unit for equalizing the turn-off order of the first switch unit and the second switch unit with reference to the turn-off number and order in a current range corresponding to a magnitude level of discharge current of a battery. Accordingly, the present invention reduces the frequency of breakdown or malfunction of the switch units and increases the using period of the switch units.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: October 22, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Ju-Hyun Kang, Jee-Ho Kim, Dong-Keun Kwon
  • Patent number: 8503137
    Abstract: An arc fault protection circuit and method, provides arc fault protection in a multiphase power system by actuating a plurality of disconnect switches to disconnect the source from the load in response to detecting arcing proximate the load. As well, in response to detecting the arc, a plurality of impedances are introduced into the current path between said source and said load, with each of the impedances increasing the impedance between the source and the load along one phase, prior to the plurality of disconnect switches disconnecting the source from the load.
    Type: Grant
    Filed: June 29, 2011
    Date of Patent: August 6, 2013
    Assignee: I-Gard Corporation
    Inventor: Sergio Panetta
  • Patent number: 8502542
    Abstract: An appliance and a method are intended to monitor a phase line of a section of an electrical energy grid line. The appliance comprises a device for monitoring a parameter of a phase line. The parameter is representative of routine operating conditions of the phase line and has a known propagation speed. The appliance also comprises a device for generating an event detection signal each time the parameter has a value that exceeds a threshold, and for storing a reception time when the detection signal is generated. The appliance also has a device for sending a signal representative of a geographic location of the end of the section and a device for performing a geographic location of the event once two consecutive detection signals are generated from the signal representative of the geographic location, and reception times associated with the two detection signals.
    Type: Grant
    Filed: June 20, 2008
    Date of Patent: August 6, 2013
    Assignee: Hydro Quebec
    Inventor: Pierre Couture
  • Patent number: 8467155
    Abstract: The invention provides a switching device having a contact protection circuit for arcing suppression. The switching device comprises a main relay for interrupting a load path and a dual coil auxiliary having a high resistance coil and a low resistance coil that operate the switching of an auxiliary contact. The auxiliary contact is connected in series with a PTC device and the low resistance coil of the auxiliary relay in a series arrangement. The series arrangement is connected in parallel to the main contact. When the main relay opens, the auxiliary contact is maintained closed during a given time interval due to the magnetic flux generated by the low resistance coil. The given time interval depends on the transition of the PTC device to trip state. In another configuration, the dual coil relay is substituted by two auxiliary relays.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: June 18, 2013
    Assignee: Tyco Electronics AMP GmbH
    Inventors: Matthias Kroeker, Joerg Einhorn, Gilles Gozlan
  • Publication number: 20130100558
    Abstract: The method comprising displacing the formed electric arc towards an electrode located in an intermediate position between both main electrodes; a separating the formed electric arc into two secondary electric arcs, a semiconductor switch, normally open, connecting the intermediate electrode to one of the main electrodes; closing the semiconductor switch in order to extinguish the secondary electric arc between both electrodes connected by the semiconductor switch; opening the semiconductor switch in order to extinguish the other secondary electric arc. The disclosure further relates to a protection method and a protection device, notably a protection device specially designed for applying the method.
    Type: Application
    Filed: October 19, 2012
    Publication date: April 25, 2013
    Applicant: ABB France
    Inventor: ABB France
  • Patent number: 8422178
    Abstract: A control circuit for controlling an arc suppression circuit includes a serial communication link communicating a serial signal therethrough. The control circuit includes a microprocessor having a serial input communicating with the serial communication link. The microprocessor generates a control output signal in response to the serial signal. The control circuit further includes the arc suppression circuit having an electrical contact and operating in response to the control output signal to reduce an arc at the electrical contact.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: April 16, 2013
    Assignee: Watlow Electric Manufacturing Company
    Inventors: Thomas Robert Pfingsten, Stanton Hopkins Breitlow, John Frederic Lemke, Keith Douglas Ness
  • Patent number: 8386108
    Abstract: In a system and method of supplying proper polarity electrical power to positive and negative conductors of a vehicle, first and second pairs of vehicle mounted contacts are electrically connected between positive and negative conductors of a first electrical bus and the positive and negative conductors of the vehicle, respectively. In response to the first pair of contacts moving into a space or gap between the first electrical bus and a second electrical bus, the first pair of contacts is isolated from the positive and negative conductors of the vehicle. In response to the vehicle moving the first pair of contacts into contact with the second electrical bus while the second pair of contacts are electrically connected to the first electrical bus, the first pair of contacts is electrically connected between the negative and positive conductors of the vehicle and negative and positive conductors of the second electrical bus, respectively.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: February 26, 2013
    Assignee: Bombardier Transportation GmbH
    Inventor: Raymond Castle
  • Patent number: 8369049
    Abstract: A method for shutting down an electric machine having a pulse-controlled inverter in the event of a malfunction. Undesirable side effects during shut-down of the electric machine may be minimized and the regular machine operation may be maximized when the electric machine is first switched to a disconnect mode in which all switches of the pulse-controlled inverter are open and subsequently is switched to a short-circuit mode in which the switches connected to the high potential are open and the switches connected to the low potential are closed.
    Type: Grant
    Filed: January 19, 2007
    Date of Patent: February 5, 2013
    Assignee: Robert Bosch GmbH
    Inventors: Jochen Kuehner, Martin Trunk, Klaus Rechberger, Manfred Ackermann, Manfred Stahl
  • Patent number: 8284528
    Abstract: The DC switch includes a housing (2) provided with a power connection terminal (2a) adapted in use to be connected to a power source, and a load connection terminal (2b) adapted in use to be connected to a load. A contact unit (1) is interposed between the power connection terminal (2a) and the load connection terminal (2b). The contact unit (1) has mechanical contacts (10), and a semiconductor switch (11) serially connected to the mechanical contacts (10). The DC switch further includes a switching mechanism unit (3) having an operating handle (30) used for manual operation and movably attached to the housing (2), a position detection unit (4) configured to detect an operating position of the operating handle (30), and a control unit (7). The switching mechanism unit (3) is configured to open and close the mechanical contacts (10) in response to the manual operation of the operating handle (30).
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 9, 2012
    Assignee: Panasonic Corporation
    Inventors: Hiroaki Koshin, Takuya Kagawa
  • Patent number: 8264803
    Abstract: An alternator disconnector circuit-breaker of the invention presents a resistance (30) in series with the circuit-breaker switch (20?); the resistance (30) is of fixed ohmic value that is about 104 times greater than the value of the resistance of the main circuit of the circuit-breaker. By means of this configuration, it is possible to use a vacuum chamber as the circuit-breaker switch (20?), and to dimension the main switch (10), which, de facto, breaks the current even for very high short-circuit currents, under more advantageous conditions.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: September 11, 2012
    Assignee: Areva T&D SA
    Inventors: Jean-Marc Willieme, Francois Biquez, Denis Frigiere
  • Patent number: 8134820
    Abstract: A contactor control circuit is disclosed for controlling a contactor connecting an alternating current electrical power source to a load. The contactor control circuit comprises a switching circuit connected in series with the inductor for controlling the conduction of the contactor. The control circuit actuates conduction of current through the inductor for energizing the contactor to connect the alternating current electrical power source to the load. The invention is also incorporated into a circuit for switching a first and a second alternating current electrical power source to a load.
    Type: Grant
    Filed: September 8, 2008
    Date of Patent: March 13, 2012
    Inventors: James E. Riccio, Frank S. Brugner
  • Patent number: 8094426
    Abstract: An electrical switching apparatus includes a number of separable contacts, an operating mechanism structured to open and close the separable contacts, a number of sensors structured to sense at least current flowing through the separable contacts, and a processor structured to cooperate with the operating mechanism to open and close the separable contacts. The processor determines a fault from the sensed current flowing through the separable contacts. The processor further responsively opens the separable contacts if the sensed current associated with the fault is less than the interrupting rating of the electrical switching apparatus. The processor keeps the separable contacts closed and waits for another circuit interrupter to interrupt the fault if the sensed current associated with the fault is greater than the interrupting rating.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: January 10, 2012
    Assignee: Eaton Corporation
    Inventors: Joe M. Kellis, Lawrence B. Farr
  • Patent number: 8095243
    Abstract: A system includes first and second controllers coupled together with a communication channel. The first controller provides a first signal to the second controller and the second controller provides a second signal to the first controller in response. The second signal includes information about an electrical load. At least one of the first and second controllers can be integrated with an electrical outlet.
    Type: Grant
    Filed: October 26, 2007
    Date of Patent: January 10, 2012
    Inventor: Minesh Bhakta
  • Patent number: 8093870
    Abstract: A generator apparatus includes a generator, a generator controller, and a rectifier bridge. A detector unit for recognizing a load shutoff is also provided. When a load shutoff is recognized, a switch is controlled to be transmissive so that energy produced by the load shutoff is stored in an energy reservoir. From there it can be fed back into the vehicle electrical system.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: January 10, 2012
    Assignee: Robert Bosch GmbH
    Inventor: Markus Mueller
  • Patent number: 8081407
    Abstract: An alternator disconnector circuit-breaker of the invention presents a compact structure. The axes of opening/closure of the change-over first switch (12, 14), of the circuit-breaker second switch (22, 24), and of the disconnector switch (32, 34) are such that an angle of 90° is present between two of them. Actuator means (40) associated with synchronization means (52, 54, 56, 58) make it possible to ensure that each switch is operated in a time-shifted manner by common control means.
    Type: Grant
    Filed: January 15, 2007
    Date of Patent: December 20, 2011
    Assignee: Areva T&D SA
    Inventors: Jean-Marc Willieme, Francois Biquez, Denis Frigiere
  • Patent number: 8064173
    Abstract: A method for providing means for energizing a capacitive load. The capacitive load is connected to an alternating current power source by using a connecting device. The connecting device comprises at least one diode and connecting organs, which can be closed or open.
    Type: Grant
    Filed: June 4, 2004
    Date of Patent: November 22, 2011
    Assignee: ABB Technology Ltd.
    Inventor: Harry Frank
  • Patent number: 8032260
    Abstract: A method and system for a power distribution system are provided. The method includes determining at a central controller normal mode configuration settings for a plurality of circuit breakers of the power distribution system and determining at the central controller alternate mode configuration settings for the plurality of circuit breakers of the power distribution system. The method further includes controlling with the central controller the operation of the plurality of circuit breakers based on the normal mode configuration settings and the alternate mode configuration settings.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: October 4, 2011
    Assignee: General Electric Company
    Inventors: Theodore D. Hill, III, Radoslaw Narel, Marcelo Valdes
  • Patent number: 8000933
    Abstract: A method and an apparatus for showing data representative of the accuracy of switching operations executed by a high-voltage switchgear which is operatively coupled to a power line and to a synchronous switching device. Data related to switching operations executed by the high-voltage switchgear is recorded and then, based on the recorded data, values indicative of the accuracy of the switching operations executed with respect to predefined target switching operations are calculated. A histogram is formed using the calculated values and shown to a user.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: August 16, 2011
    Assignee: ABB Technology AG
    Inventors: Anton Poeltl, Michael Mendik
  • Patent number: 7961443
    Abstract: A control circuit for controlling an arc suppression circuit includes a serial communication link communicating a serial signal therethrough. The control circuit includes a microprocessor having a serial input communicating with the serial communication link. The microprocessor generates a control output signal in response to the serial signal. The control circuit further includes the arc suppression circuit having an electrical contact and operating in response to the control output signal to reduce an arc at the electrical contact.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: June 14, 2011
    Assignee: Watlow Electric Manufacturing Company
    Inventors: Thomas Robert Pfingsten, Stanton Hopkins Breitlow, John Frederic Lemke, Keith Douglas Ness
  • Patent number: 7854832
    Abstract: An input terminal is electrically connected to a contact point. An anti-corrosion current supplying section is operable to supply an anti-corrosion current to the contact point through the input terminal so as to remove corrosion in the contact point. A series resistor is electrically interposed between the input terminal of the signal processing circuit and the contact point. The anti-corrosion current is supplied to the contact point through the series resistor.
    Type: Grant
    Filed: March 26, 2007
    Date of Patent: December 21, 2010
    Assignee: Fujitsu Ten Limited
    Inventors: Kazuhiro Komatsu, Keisuke Kido, Kouji Oonishi
  • Patent number: 7821749
    Abstract: An arc crowbar with electrodes separated by a gap in a protective case. Each electrode is connected to an electrically different conductor of a circuit. A sensor detects an arc flash condition on the circuit and signals a trigger circuit to send an electrical pulse to an arc-triggering device in the arc crowbar gap. The triggering device ionizes a portion of the gas between the electrodes, initiating a protective arc between the electrodes that absorbs energy from the power circuit and trips a breaker, eliminating the arc flash condition. The triggering device may be a plasma gun, especially one that injects plasma of an ablated material into the gap. The sensor may signal a circuit breaker to open in the power circuit. Arc flash sensor types may include a differential current sensor and/or an optical sensor.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: October 26, 2010
    Assignee: General Electric Company
    Inventors: Thangavelu Asokan, Gopichand Bopparaju, Adnan Kutubuddin Bohori
  • Publication number: 20100134931
    Abstract: Hybrid power relay for making and breaking an electrical circuit which includes electromagnetically operated contacts for making and breaking the circuit, a solid state switch connected across the contacts, a control circuit responsive to a control signal for actuating the solid state switch and the contacts such that the solid state switch closes before the contacts to make the circuit and the contacts open before the solid state switch to break the circuit, and a protective circuit for monitoring the temperature of the solid state switch and opening the switch in the event of a rise in temperature produced by abnormal current flow in the switch due to failure of the contacts to make and maintain the circuit.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 3, 2010
    Inventor: Sergio Orozco
  • Patent number: 7723872
    Abstract: A method and a device for determining a switching time of an electric switching device. An electric switching device includes an interrupter link. A first line section and a second line section can be connected and disconnected by way of the interrupter link. In order to determine a switching time, the temporal progression of a driving voltage is determined in the first line section. In addition, a temporal course of an oscillator voltage appearing in the second line section is determined. Potential switching times are determined at the voltage zero crossings of a resulting voltage. The selection of the potential switching times ensues while evaluating the rises of the driving voltage and of the oscillator voltage or of the polarity of the oscillating current.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: May 25, 2010
    Assignee: Siemens Aktiengesellschaft
    Inventors: Georg Pilz, Peter Schegner, Christian Wallner
  • Patent number: 7697247
    Abstract: An arc suppression circuit in a protection relay having trip contacts is used to turn off a battery-powered solenoid and trip an AC power circuit breaker. The arc suppression circuit uses a switch-control circuit to control the turning off of a semi-conductor switch so that the semi-conductor switch provides a current path around the trip contacts, and is carrying all, or substantially all, of the load current, before the trip contacts are opened. When the trip contacts begin to open, the switch-control circuit holds the semi-conductor switch on for a sufficient time to prevent an arc from becoming established before turning the semi-conductor switch off. In a second embodiment, the arc suppression circuit provides a second switch-control circuit. This second switch-control circuit is configured to accept control signals from a microprocessor within a protection relay.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: April 13, 2010
    Assignee: ABB Technology AG
    Inventors: Mohamed Maharsi, Douglas A. Voda, Mark C. Glacobbe, Dela Salah-Eldin Sayoumi, Douglas A. Wood
  • Patent number: 7660083
    Abstract: An electromechanical/solid-state AC relay has an electromechanical winding coil that moves an armature to force mechanical contacts to open or close. Electrical arcing across the mechanical contacts that occur as the contacts are opening or closing can damage and severely reduce the lifetime of the relay. Contact arcing is prevented by pulsing a triac on for a short period of time just before and after the mechanical contacts make or break contact. The triac limits the voltage difference across the mechanical contacts to less than one volt to prevent arcing. The triac is turned off after the mechanical contacts finish moving, reducing the heating and average power through the triac. A zero-sampling circuit that detects when the AC input voltage switches across 0 volts and activates a control integrated circuit to switch on the triac during zero-crossings to minimize power surges.
    Type: Grant
    Filed: August 6, 2007
    Date of Patent: February 9, 2010
    Assignee: Pericom Technology Inc.
    Inventors: Li Yao, Shu Peng Chen, Yong Wei
  • Patent number: 7626286
    Abstract: The method for mains-synchronous switching of circuit breakers comprises the following method steps: measurement of the current flowing through a circuit breaker (9) and measurement of a mains voltage on a first side of the circuit breaker (9), additional voltage measurement on a second side of the circuit breaker (9), feeding of all the measurement signals to a control device (18), deciding in the control device (18), on the basis of the characteristic data stored there, which measurement signal will be used as the reference value for the mains-synchronous tripping of the circuit breaker (9), generating a switching command, which initiates the mains-synchronous switching of the circuit breaker (9) on the basis of this decision, and carrying out the switching command by the circuit breaker (9).
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: December 1, 2009
    Assignee: ABB Technology AG
    Inventor: Michael Stanek
  • Patent number: 7612471
    Abstract: The invention relates to a hybrid electrical switching device, comprising an electromechanical relay including a mechanical switching element to be operated by an electrical coil, and a main semiconductor switching element including a control input and a current conduction path which is connected in parallel with the mechanical switching element for energizing an electric load. The main semiconductor switching element is of the type that ceases to conduct when a current through the current conduction path thereof drops below a threshold value. The circuit furthermore comprises an auxiliary semiconductor switching element including a control input and a current conduction path which is connected for controlling the main semiconductor switching element.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: November 3, 2009
    Assignee: Eaton Electric N.V.
    Inventor: Petrus Johannes Plechelmus Schasfoort
  • Patent number: 7580232
    Abstract: A system for identifying an arcing event in electrical distribution systems is provided. The system comprises a sensor configured to detect ultraviolet light and to generate a signal indicative of the arcing event propagating from the electrical distribution system. A processor coupled to the sensor and configured to analyze an ultraviolet light characteristic from the signal and generate an arc fault signal. A protective device configured to receive the arc fault signal and to mitigate the arcing event in the electrical distribution system.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: August 25, 2009
    Assignee: General Electric Company
    Inventors: Robert J. Caggiano, Thangavelu Asokan, Satyanarayana Murphy Ungarala, George William Roscoe