Capacitor Protection Patents (Class 361/15)
  • Patent number: 10855172
    Abstract: A shield includes an inductor that includes outer electrodes and that is mounted on a substrate in or on which a wiring pattern is formed, a second capacitor that is electrically connected between one of the outer electrodes of the inductor and a ground pattern formed in or on the substrate, and a shield member that is disposed so as to cover the inductor and electrically connected to the one of the outer electrodes of the inductor, to which the second capacitor is connected. The second capacitor has frequency characteristics such that, when the self-resonance frequency of the second capacitor serves as a boundary, the impedance of the second capacitor decreases as the frequency increases on the low frequency side and that the impedance of the second capacitor increases as the frequency increases on the high frequency side.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: December 1, 2020
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kenichi Ito, Shun Takai, Koichi Yamaguchi
  • Patent number: 10854390
    Abstract: The present technology provides an electronic component with an interposer, including an electronic component and an interposer. An adhesive section is disposed in an opposing space between a main body of the electronic component and a substrate. When a direction in which first and second external electrodes of the electronic component face each other is a first direction, a direction orthogonal to the first direction is a second direction, and a direction in which the electronic component and the interposer face each other is a third direction, the adhesive section includes a plurality of unitary adhesive sections separated from each other, and the unitary adhesive sections are disposed in a two-dimensional array such that the number of unitary adhesive sections arrayed along the second direction is smaller on opposing sides in the first direction than at a center.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: December 1, 2020
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Tetsuo Shimura, Yosuke Nakada, Yasuyuki Inomata
  • Patent number: 10790681
    Abstract: A vehicle refrigeration system includes a vehicle power device, and a vehicle refrigeration device coupled to the vehicle power device. The vehicle refrigeration device includes an evaporator configured to provide cooling based upon refrigerant fluid, a condenser configured to process the refrigerant fluid downstream from the evaporator, and a compressor configured to operate based upon a combined voltage, and transmit the refrigerant fluid from the evaporator to the condenser.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: September 29, 2020
    Assignee: GANIERE INNOVATIONS, L.L.C.
    Inventor: Jeffrey R. Ganiere
  • Patent number: 10656196
    Abstract: In an embodiment, a missing utility ground detection circuit includes a pair of balanced resistors each connected to receive utility voltage from a different one of a pair of utility power lines, the balanced resistors being connected together at a summing node to be capable of summing the voltages from the pair of utility power lines. It includes an unbalance resistor connected to shunt voltage from one of the utility power lines. It has a summing amplifier with an input coupled to the summing node and to a reference voltage, and an input coupled to a second reference voltage. It has an averaging circuit connected at the output of the summing amplifier. A comparator is provided having an input connected to the averaging circuit an input connected to a threshold voltage.
    Type: Grant
    Filed: March 13, 2018
    Date of Patent: May 19, 2020
    Assignee: Webasto Charging Systems, Inc.
    Inventors: Albert Flack, Scott Garret Berman
  • Patent number: 10637108
    Abstract: An energy storage device, such as a capacitor or battery, is provided with a detector and detector support for signaling an expansion of the case caused by a buildup of internal pressure, wherein the detector support is provided with a base attached to a periphery of a side of the case, and the detector support has a superstructure for positioning the detector over an interior of the side of the case, whereby the interior expands a greater distance than the periphery of the side of the case in response to internal pressure.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: April 28, 2020
    Assignee: Cornell Dubilier Marketing, Inc.
    Inventors: James Peter Kaplan, Adam William Russell
  • Patent number: 10627439
    Abstract: Apparatus (1) for use in disturbance evaluation systems based on disturbance extraction, which apparatus (1) comprises measuring means for obtaining signal frequency both before (4) and after a disturbance (3) in an electricity network but excluding use of the disturbance transient itself, and interpolation means (5) for interpolating frequency across the disturbance interval to reflect the underlying frequency trend (9) uninfluenced by the disturbance transient.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: April 21, 2020
    Assignee: Outram Research Ltd
    Inventor: John Douglas Outram
  • Patent number: 10600580
    Abstract: An explosion-proof apparatus includes a stopper having a hollow cylindrical shape that is open at a first side and closed at a second side, and configured to be combined with an electrolytic condenser to surround an explosion-proof face of the electrolytic condenser and a lateral side connected to the explosion-proof face, through the first side, and a holder provided on the stopper to support the stopper. The first side of the stopper is separated from the explosion-proof face of the electrolytic condenser, a lateral side of the stopper has a stepped structure in which a periphery of a first region connecting to the first side is larger than a periphery of a second region connecting to the second side, and the holder is mounted on the stopper to surround at least part of the periphery of the second region of the stopper.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: March 24, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Yong Joo, Sung Bum Jung, Won Myung Woo
  • Patent number: 10554057
    Abstract: A discharge control system of a vehicle includes a traction power inverter module (TPIM) configured to convert a first direct current (DC) voltage output by a first battery to alternating current (AC) power and apply the AC power to an electric motor. An accessory power module (APM) is configured to convert the first DC voltage into a second DC voltage of a second battery. A voltage calculation module is configured to, when the first DC voltage is less than an operation threshold voltage of the APM, determine the second DC voltage based on a function of the first DC voltage and the operation threshold voltage. A diagnostic module is configured to indicate whether a discharge fault is present. A discharge control module is configured to, when the discharge fault is present, based the first DC voltage and the second DC voltage, selectively control operation of the TPIM and the APM.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 4, 2020
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Konking Wang, Kris Sevel, Steven V. Wybo
  • Patent number: 10522533
    Abstract: A three-dimensional (3D) circuit structure includes a 3D insulating substrate having at least one circuit forming zone and at least one exposed contact forming zone; at least one circuit pattern portion provided on the 3D insulating substrate and having at least one circuit trace layout layer located in the circuit forming zone and at least one exposed contact located in the exposed contact forming zone and connected to the circuit trace layout layer; and an insulating encapsulation member covering at least the circuit forming zone and the circuit trace layout layer. With the insulating encapsulation member, the circuit trace layout layer is waterproof, dustproof, scratch-resistant, peeling-proof, secure for use, and compliant with safety codes of electrical insulation, enabling the 3D circuit structure in use to have stable electrical characteristics.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: December 31, 2019
    Assignee: PIN SHINE INDUSTRIAL CO., LTD.
    Inventors: Chih-Hung Lin, Kun-Chuan Chang
  • Patent number: 10459863
    Abstract: A transceiver circuit for communicating data over a CAN bus having a first and second bus line the transceiver circuit comprising: a data input port, a data output port, a CAN-bus transceiver unit having a receive data output port for providing data received from the CAN-bus, and a transmit data input port for receiving data to be transmitted to the CAN-bus; a control input port for receiving a control signal indicative of whether transmission of data from this transceiver circuit to the CAN-bus is allowed or prohibited; a filtering circuit adapted for filtering the control signal received on the control input port and for providing a filtered control signal; a logic circuitry adapted for configuring the CAN-bus transceiver unit in receive mode based on the debounced control signal irrespective of ongoing communication on the CAN-bus.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: October 29, 2019
    Assignee: Melexis Technologies NV
    Inventors: Joergen Sturm, Thomas Freitag, Michael Frey
  • Patent number: 10395844
    Abstract: A capacitor component includes multilayer ceramic capacitors and an interposer board on which the multilayer ceramic capacitors are mounted. The interposer board is provided with four or more lands that are electrically connected to the corresponding external electrodes of the multilayer ceramic capacitors, an input terminal, and an output terminal, and each of the four or more lands is electrically connected to one of the input terminal and the output terminal.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: August 27, 2019
    Assignee: MURATA MANUFACTURING CO., LTD.
    Inventors: Yoshitsugu Morita, Nagato Omori, Atsushi Sakuragi
  • Patent number: 10325723
    Abstract: An electronic components includes: a multilayer capacitor including a capacitor body and a pair of external electrodes, an interposer including an interposer body and a pair of external terminals, and an adhesive; wherein the external terminal includes a bonding portion, a mounting portion, and a connection portion; wherein an adhesive is provided between the external electrode and the bonding portion, and falls along the connection portion of the external terminal; wherein 1.55?(L+T22)/T1 in which T2 is a height at which the adhesive falls along the connection portion of each of the external terminals, L is a length of the bonding portion, and T1 is a height of the electronic component.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: June 18, 2019
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ho Yoon Kim, Sang Soo Park, Woo Chul Shin
  • Patent number: 10242800
    Abstract: In an embodiment, a multilayer ceramic capacitor 10 has a capacitor body comprising a capacitive part 11a constituted by multiple internal electrode layers 11a1 that are stacked with dielectric layers 11a2 in between, as well as dielectric cover parts 11b that respectively cover both sides of the capacitive part 11a in the stacking direction. Also, the dielectric layers 11a2 of the capacitive part 11a, and the dielectric cover parts 11b, contain elemental manganese, and the elemental manganese is distributed in such a way that its quantity gradually decreases in the depth direction from the exterior faces of the dielectric cover parts 11b toward the center of the dielectric layers 11a2 of the capacitive part 11a.
    Type: Grant
    Filed: May 19, 2017
    Date of Patent: March 26, 2019
    Assignee: TAIYO YUDEN CO., LTD
    Inventors: Daisuke Sakate, Sadanori Shimoda, Fumi Taniguchi, Minoru Ryu
  • Patent number: 10039205
    Abstract: A subsea power supply arrangement includes a closed power supply module realized to contain a pressure-compensated main fluid volume; and a number of power cell arrangements arranged in the interior of the closed power supply module. At least one power cell arrangement includes a metal capacitor housing realized to contain a capacitor bank in a fluid volume, and a barrier between an interior fluid volume of the power cell arrangement and the main fluid volume. A subsea power cell arrangement for use in such a subsea power supply arrangement is also disclosed.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: July 31, 2018
    Assignee: SIEMENS AKTIENGESLLSCHAFT
    Inventor: Fredrik Gundersen Aarskog
  • Patent number: 10027139
    Abstract: A battery module is disclosed. In one aspect, the battery module includes a battery management system configured to control charge and discharge operations of a battery pack, and a conductor configured to form charge and discharge current paths of the battery pack. The battery module also includes a relay electrically connected to the conductor and configured to selectively block the charge and discharge current paths and a support plate supporting the battery management system, the conductor and the relay.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: July 17, 2018
    Assignee: Samsung SDI Co., Ltd.
    Inventor: Heesung Jung
  • Patent number: 9947467
    Abstract: A protected capacitor system/method implementing enhanced transient over-voltage suppression is disclosed. The system/method incorporates one or more surge suppression devices (SSDs) proximally located and in parallel with a capacitor structure to produce an overall protected capacitor structure having enhanced reliability and simultaneous ability to resist transient overvoltage conditions. The SSDs are formed from series combinations of transient voltage surge suppressors (TVSs) (metal oxide varistor (MOV), diode for alternating current (DIAC), and/or silicon diode for alternating current (SIDAC)) and corresponding shunt diode rectifiers (SDRs) and placed in parallel across a capacitor structure to locally suppress voltage transients across the capacitor structure in excess of the voltage rating of the capacitor structure.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: April 17, 2018
    Inventor: Mark Eugene Goodson
  • Patent number: 9948217
    Abstract: The present invention relates to a motor assembly, a method of operation thereof and a transport vehicle provided with the motor assembly. The motor assembly is provided with an energy source switching controller that is in synchronization with motor operation and provides an improved utilization of energy storage sources in an electric, hybrid electric, or fuel cell based motor vehicle drive train application.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: April 17, 2018
    Assignee: Atieva, Inc.
    Inventor: Chia-Ming Chuang
  • Patent number: 9916934
    Abstract: A capacitor assembly is provided having a case containing an upper capacitor and a lower capacitor in vertical alignment, each of the capacitor elements are separately sealed and provided with a pressure interrupter. A terminal board overlays the cover of the upper capacitor and is affixed to the top of the case. The terminals associated with the upper capacitor are mounted on the cover and extend through openings in the terminal board. The terminals associated with the lower capacitor are mounted on the terminal board and connected to contacts on the cover of the lower capacitor. The common leads of all of the capacitor elements are connected, thereby allowing any or all of the capacitor elements to be connected in parallel by accessing the terminals from the terminal board.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: March 13, 2018
    Assignee: Cornell Dubilier Electronics, Inc.
    Inventors: Hector Arsenio Casanova, Rui Miguel Batista, Brian Lowell Padelford, Paul Mathew Jan Jorissen, Jr.
  • Patent number: 9755561
    Abstract: A power supply device includes: a first electric power line; a second electric power line; a first boost converter; a second boost converter; a first current sensor; a second current sensor; a third current sensor; and an electronic control unit. The electronic control unit is configured to determine that a third switching element of the second boost converter has an on-failure when a battery current is a value at a time of being discharged from a battery, a first reactor current is a value at a time of passing from a side of a second positive electrode line to a side of a first center point, and a second reactor current is a value at a time of passing from a side of a second center point to a side of a second positive electrode line.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: September 5, 2017
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventor: Yuki Jojima
  • Patent number: 9685274
    Abstract: The invention relates to an electric capacitor having at least one capacitor coil, a cylindrical housing that surrounds the capacitor coil, composed of metal, electric connectors, and connection lines that run in the housing interior and electrically connect the capacitor coil with the connectors, wherein at least one connection line has a planned breaking point, and wherein at least one circumferential depression is formed in the mantle of the housing, which depression divides the housing into a first segment and a second segment and can be unfolded by means of excess pressure in the housing interior, wherein the first segment surrounds the capacitor coil and the second segment carries the connectors.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: June 20, 2017
    Assignee: Secop Austria GmbH
    Inventor: Bernard Weber
  • Patent number: 9648746
    Abstract: There is provided a composite electronic component and a board having the same, and the composite electronic component may include: an interposer board, and first and second electronic components mounted on upper and lower surfaces of the interposer board, respectively, and first and second electronic components are electrically connected to each other by an electrical connection part provided on the interposer board.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: May 9, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Heung Kil Park, Sang Soo Park
  • Patent number: 9625519
    Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: April 18, 2017
    Assignee: ROCKWELL AUTOMATION TECHNOLOGIES, INC.
    Inventors: Yuan Xiao, Lixiang Wei, Doyle F. Busse
  • Patent number: 9548690
    Abstract: In one aspect, a method for controlling the operation of a power generation system configured to supply power to an electrical grid may generally include monitoring a rotor speed of a generator of the power generation system and determining a gain scaling factor based on the rotor speed, wherein the gain scaling factor increases with decreases in the rotor speed across a range of rotor speeds. In addition, the method may include adjusting a regulator gain to be applied within a current regulator of the power generation system based on the gain scaling factor and applying the adjusted regulator gain within the current regulator in order to generate a voltage command signal for controlling a power converter of the power generation system.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: January 17, 2017
    Assignee: General Electric Company
    Inventors: Wei Ren, Einar Vaughn Larsen, Sidney Allen Barker
  • Patent number: 9545005
    Abstract: A multilayer ceramic electronic component may include: a multilayer ceramic capacitor including a ceramic body in which a plurality of dielectric layers are stacked, a pair of first external electrodes and a pair of second external electrodes formed on both side surfaces of the ceramic body and extended to portions of a mounting surface of the ceramic body, and first and second internal electrodes alternately stacked, having the dielectric layer therebetween, exposed through at least one side surface of the ceramic body, and connected to the first and second external electrodes, respectively; and an interposer substrate including an insulation substrate bonded to the mounting surface of the multilayer ceramic capacitor, and first and second connection terminals formed on the insulation substrate and connected to the first and second external electrodes, respectively.
    Type: Grant
    Filed: April 8, 2014
    Date of Patent: January 10, 2017
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sang Soo Park, Min Cheol Park
  • Patent number: 9526174
    Abstract: A multilayer ceramic electronic component may include: a multilayer ceramic capacitor including a ceramic body, a plurality of first and second internal electrodes formed to be alternately exposed to both side surfaces of the ceramic body, having a dielectric layer therebetween, and first and second external electrodes connected to the first and second internal electrodes, respectively; and an interposer board including an insulation board coupled to the mounting surface of the multilayer ceramic capacitor and first and second connection terminals formed on the insulation board and connected to the first and second external electrodes, respectively.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: December 20, 2016
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sang Soo Park, Min Cheol Park
  • Patent number: 9444118
    Abstract: A battery pack is disclosed. In one embodiment, the battery pack includes a battery module including a plurality of battery units. It further includes a battery management unit including a plurality of charge terminals and a plurality of discharge terminals electrically connected to terminals of the plurality of battery units, and controlling charging/discharging of the battery module. It further includes a control unit including a plurality of discharge control terminals electrically connected to the plurality of discharge terminals, a discharge control switch installed between each of the plurality of discharge control terminals, and a charge recognizing unit, and controlling the operation of the discharge control switch according to the level of voltage detected by the charge recognizing unit.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: September 13, 2016
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Bongyoung Kim, Kiho Shin
  • Patent number: 9424995
    Abstract: An apparatus is disclosed which includes an electrolytic capacitive element with multiple capacitor sections.
    Type: Grant
    Filed: August 13, 2013
    Date of Patent: August 23, 2016
    Assignee: American Radionic Company, Inc.
    Inventor: Robert M. Stockman
  • Patent number: 9401597
    Abstract: The present invention relates to a method (100) and a device for discharging an intermediate circuit (9) of a power supply network (10), in particular a high-voltage network, wherein a consumer (7) can be connected to the power supply network (10). A first (11) and a second (12) discharge circuit for discharging the intermediate circuit (9) are provided. In a first step, the intermediate circuit (9) is discharged at least partially by means of the first discharge circuit (11) and, in a subsequent second step (104), the intermediate circuit (9) is further discharged (104) by means of the second discharge circuit (12).
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: July 26, 2016
    Assignee: Robert Bosch GmbH
    Inventors: Tobias Werner, Stefan Mangold
  • Patent number: 9374020
    Abstract: Described herein is a stacked switched capacitor (SSC) energy buffer circuit architecture and related design and control techniques.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: June 21, 2016
    Assignee: Massachusetts Institute of Technology
    Inventors: David J. Perreault, Khurram K. Afridi, Minjie Chen, Steven B. Leeb, Arthur Hsu Chen Chang
  • Patent number: 9236188
    Abstract: In a multilayer ceramic capacitor including outer electrodes electrically connected to inner electrodes of a ceramic body, a thickness of each of end portions of extension portions of the inner electrodes in a width direction is larger than a thickness of a corresponding one of middle regions in the width direction, and a distance from a first main surface of the ceramic body to a first auxiliary electrode closest to the first main surface is different from a distance from a second main surface of the ceramic body to a second auxiliary electrode closest to the second main surface in a stacking direction. Each of the first auxiliary electrode and the second auxiliary electrode has a continuity in the width direction of about 60% or more.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: January 12, 2016
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Mayumi Yamada, Atsushi Ishida, Makoto Sugiura
  • Patent number: 8907800
    Abstract: An electronic apparatus includes: a temperature measurement section that measures a temperature of a heat generation source generating heat by consuming power or a temperature of an inner position of a casing of which the temperature changes due to the heat generation of the heat generation source; and an environmental temperature calculation section that calculates a temperature which is calculated using a predetermined relational equation that is different in accordance with a model from a difference between a first temperature measured by the temperature measurement section at a point in time when the heat generation source starts consuming a predetermined amount of power and a second temperature measured by the temperature measurement section at a point in time after the passage of a predetermined period from the start of consumption of a predetermined amount of power by the heat generation source as an environmental temperature in an environment where the casing is placed.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: December 9, 2014
    Assignee: Sony Corporation
    Inventors: Kimiyasu Namekawa, Hiroyuki Kobayashi
  • Patent number: 8884350
    Abstract: This semiconductor device according to the present invention includes a plurality of cylindrical lower electrodes aligned densely in a memory array region; a plate-like support which is contacted on the side surface of the cylindrical lower electrodes, and links to support the plurality of the cylindrical lower electrodes; a pore portion provided in the plate-like support; a dielectric film covering the entire surface of the cylindrical lower electrodes and the plate-like support in which the pore portion is formed; and an upper electrode formed on the surface of the dielectric film, wherein the boundary length of the part on the side surface of the cylindrical lower electrode which is exposed on the pore portion is shorter than the boundary length of the part on the side surface of the cylindrical lower electrode which is not exposed on the pore portion.
    Type: Grant
    Filed: January 23, 2013
    Date of Patent: November 11, 2014
    Assignee: PS4 Luxco S.A.R.L.
    Inventor: Toshiyuki Hirota
  • Patent number: 8817428
    Abstract: Systems, methods and devices for monitoring temperature are presented herein. A method of monitoring temperature in a system, such as a capacitor bank, is disclosed. The method may include: receiving first device temperature signals indicative of the temperature of a first device over a predetermined period of time; receiving second device temperature signals indicative of the temperature of a second device over a predetermined period of time; determining a first rolling average temperature for the predetermined period of time from the first device temperature signals; determining a second rolling average temperature for the predetermined period of time from the second temperature signals; and triggering a disconnect event in response to a determination that either the first or the second rolling average temperature is greater than a predetermined maximum working temperature.
    Type: Grant
    Filed: August 26, 2011
    Date of Patent: August 26, 2014
    Assignee: Schneider Electric USA, Inc.
    Inventors: Marcelo Perez, Jeffrey J. Farago
  • Patent number: 8810976
    Abstract: A harmonic protection method for a capacitor bank uses a harmonic protection apparatus, which includes a CPU unit, a current and voltage sampling unit, and a protection device. The CPU unit obtains effective value I1 of fundamental wave current of the capacitor bank, and effective value In of the n-th harmonic wave current of the capacitor bank, where n is harmonic order and ranges from 2 to ?, and calculates the true effective value I of current of the capacitor bank by I = I 1 2 + ? n = 2 ? ? k n ? I n 2 provided that kn=rn/r1, kn is the n-th harmonic coefficient, rn is power consumption equivalent resistance of the capacitor bank for the n-th harmonic, r1 is power consumption equivalent resistance of the capacitor bank at a fundamental frequency. When I?1.3 IN, the CPU unit controls the protecting device to disconnect the capacitor bank, provided that IN is a threshold current of the capacitor bank.
    Type: Grant
    Filed: January 30, 2011
    Date of Patent: August 19, 2014
    Assignee: Changzhou Current Supply Company of Jiangsu Electric Power Company
    Inventors: Liang Cao, Hao He, Jianyang Yu, Jiaohong Luo, Zhen Xu
  • Patent number: 8810975
    Abstract: A MOS-type semiconductor input capacitor protection circuit and system is described. In one embodiment, the system includes a MOS device configured as an input capacitor and configured to receive an input bias voltage. A bias monitor circuit is configured to monitor the input bias voltage and apply a selective capacitor bias voltage to the input capacitor so as to limit the voltage across the input capacitor to a level below a threshold voltage.
    Type: Grant
    Filed: July 17, 2010
    Date of Patent: August 19, 2014
    Assignee: LSI Corporation
    Inventor: Jonathan H. Fischer
  • Patent number: 8665572
    Abstract: The present invention relates to a battery charge/discharge protection circuit that protects an associated battery from charge/discharge damage. The charge/discharge protection circuit includes a first terminal, a second terminal, a charge over-current detection circuit, a discharge over-current detection circuit, a short circuit detection circuit, and a PMOS transistor. A drain electrode and a gate electrode of the PMOS transistor are connected to the first terminal and the second terminal respectively. A source electrode of the PMOS transistor is connected to the charge over-current detection circuit, the discharge over-current detection circuit and the short circuit detection circuit, such that when a voltage above an overvoltage threshold is supported by the charger, the voltage of the source electrode of the PMOS transistor is maintained above a negative threshold voltage and the elements in these circuits do not receive such a voltage output by the charger.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: March 4, 2014
    Assignee: Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd.
    Inventor: Zutao Liu
  • Patent number: 8643383
    Abstract: The present techniques include methods and systems for detecting a failure in a capacitor bank of an electrical drive system. Embodiments include using discharge resistors to discharge capacitors in the capacitor bank, forming a neutral node of the capacitor bank. In different capacitor configurations, the neutral node is measured, and the voltage is analyzed to determine whether a capacitor bank unbalance has occurred. In some embodiments, the node is a neutral-to-neutral node between the discharged side of the discharge resistors and a neutral side of the capacitor bank, or between the discharged side of the discharge resistors and a discharged side of a second set of discharge resistors. In some embodiments, the node is a neutral-to-ground node between the discharged side of the discharge resistors and a ground potential.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 4, 2014
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Yuan Xiao, Lixiang Wei, Doyle F. Busse
  • Patent number: 8614598
    Abstract: An output circuit includes a first transistor coupled to an external terminal and having a gate terminal that receives a first drive signal. The first transistor pulls down a potential at the external terminal when activated in accordance with the first drive signal. The output circuit also includes a capacitor. The capacitor includes a first end coupled to the gate terminal of the first transistor. A clamp circuit, coupled to a second end of the capacitor, clamps the second end of the capacitor to a potential corresponding to the operation of the first transistor. The first transistor includes a drain terminal that is not coupled to the capacitor but is coupled to the external terminal.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: December 24, 2013
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Hiroshi Miyazaki
  • Patent number: 8587952
    Abstract: Insulating ribs are formed into one or more portions of a housing that encloses circuitry of an electrical device. Components mounted on a board are separated according to whether they are related to a primary side of a power transformer or a secondary side. Primary related components are typically mounted on the primary side of an isolation slot formed into a circuit board and components related to the secondary are mounted on the other side. The insulating ribs are strategically placed to protrude through the slots when circuit board is mounted to the housing portion. Thus, when the housing portion is joined to another housing portion, which also may include insulating ribs strategically placed, the ribs increase the breakdown voltage of the boundary.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: November 19, 2013
    Assignee: ARRIS Enterprises, Inc.
    Inventors: Brent Scott Hughes, Jason Pierce
  • Patent number: 8575941
    Abstract: An apparatus and method is provided for identifying a faulted phase in at least one shunt capacitor bank. The apparatus generally includes a sampling circuit for sampling current or voltage signals associated with the shunt capacitor bank. A microcontroller is coupled to the sampling circuit and programmed to measure a compensated neutral point phase angle from the sampled signal, and compare the compensated neutral point phase angle with a fixed reference phase angle to identify the faulted phase of the shunt capacitor bank. The method generally includes the steps of sampling a current or voltage signal associated with the shunt capacitor bank, determining a compensated neutral point phase angle from the sampled signal, and comparing the compensated neutral point phase angle with a fixed reference phase angle to identify the faulted phase of the shunt capacitor bank. The invention also relates to an apparatus and method for identifying the location of the fault (e.g.
    Type: Grant
    Filed: September 8, 2009
    Date of Patent: November 5, 2013
    Assignee: Schweitzer Engineering Laboratories Inc
    Inventors: Satish Samineni, Casper A. Labuschagne
  • Publication number: 20130252039
    Abstract: An electrical bypass element, suitable for bypassing defective storage cells in energy storage devices includes two electrical conductors between which is formed a layer sequence with at least one electrical insulation layer and one or more reactive layer stacks, in which an exothermic reaction can be triggered. The reactive layer stacks and the insulation layer are matched to one another such that the insulation layer disintegrates as a result of the thermal energy released during the exothermic reaction and an electrical connection is produced between the electrical conductors. The electrical bypass element can be actively triggered even before the ultimate failure of a storage cell so that higher power losses in the energy storage device can be avoided.
    Type: Application
    Filed: March 25, 2013
    Publication date: September 26, 2013
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventor: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
  • Patent number: 8536838
    Abstract: A circuit protection device includes a plasma gun, at least one capacitor communicatively coupled to the plasma gun, and a monitoring circuit communicatively coupled to the at least one capacitor. The capacitor is configured to store electrical energy and to provide the electrical energy to the plasma gun. The monitoring circuit is configured to measure a charge property of the at least one capacitor, determine a charge status of the at least one capacitor based on the measured charge property, and output at least one signal indicative of the charge status.
    Type: Grant
    Filed: December 14, 2010
    Date of Patent: September 17, 2013
    Assignee: General Electric Company
    Inventors: John Kenneth Hooker, Hardik Upadhyay, Gitika Tantuwaya
  • Patent number: 8518573
    Abstract: An energy-storage device electrode core is disclosed that features relatively low-inductive impedance (and thus low equivalent series resistance (ESR)). Also disclosed is an energy-storage device electrode core that features a radii-modulated electrode core that forms extra vias to facilitate efficient heat removal away from the electrode, thus improving the performance and capabilities of an energy-storage device so equipped. The internal electrode core heat-removal vias are defined by the modulation patterns that in turn define the size and layout of the folds in the electrode, which are circumferentially collapsed about the center axis of the electrode core.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: August 27, 2013
    Assignee: Maxwell Technologies, Inc.
    Inventor: John M. Miller
  • Publication number: 20130188283
    Abstract: A method for protecting a super capacitor includes monitoring a charge level of the capacitor, monitoring a temperature of the capacitor, discharging the capacitor when the temperature is above a predetermined level, or discharging the capacitor down to a predetermined level when the capacitor has stayed charged over said level longer than a predetermined period, and directing the discharged power from the capacitor to a cooling device for cooling the capacitor. Also, a super capacitor system includes at least one super capacitor, a control unit and sensor for monitoring the temperature and the charge level of the capacitor. The system further includes a cooling device connected to the super capacitor for cooling the capacitor.
    Type: Application
    Filed: January 23, 2013
    Publication date: July 25, 2013
    Applicant: VOLVO CAR CORPORATION
    Inventor: VOLVO CAR CORPORATION
  • Patent number: 8489246
    Abstract: A hybrid control system for controlling an electric machine coupled to a gas turbine engine is provided. The control system comprises: a primary analog control loop including an analog controller for controlling the electric machine based on a set point and a measured output of the electric machine; and a digital controller of the turbine engine operationally connected to the primary analog control loop to adjust at least one control parameter associated with the analog controller.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: July 16, 2013
    Assignee: Pratt & Whitney Canada Corp.
    Inventor: Kevin Allan Dooley
  • Publication number: 20130170261
    Abstract: An independent bleeding integrated circuit device is provided to replace the bleeding resistor for an EMI filter capacitor, to establish a discharge path between the two terminals of the EMI filter capacitor when the EMI filter capacitor is disconnected from an AC power source, for discharging the EMI filter capacitor. When the EMI filter capacitor is connected with an AC power source, the discharge path is cut off to avoid power loss.
    Type: Application
    Filed: December 28, 2012
    Publication date: July 4, 2013
    Applicant: RICHTEK TECHNOLOGY CORPORATION
    Inventor: RICHTEK TECHNOLOGY CORPORATION
  • Patent number: 8451133
    Abstract: A capacitor providing a thermal alert includes a wound film capacitor for carrying a large current when coupled to an AC generator. The wound film capacitor includes a hollow core extending from one end to another end of the capacitor. Also included are an in-line thermal switch, which is disposed in the hollow core for sensing a predetermined temperature; and a light indicator, which is coupled to the thermal switch. A single housing is integrally formed from an upper cover and a lower cover for housing the capacitor, the thermal switch and the light indicator. The upper cover of the housing is formed from translucent material. The thermal switch is configured to disconnect the wound film capacitor from the AC generator upon reaching the predetermined temperature, and activate the light indicator to emit a light. The upper cover is effective in transmitting the light from inside the housing to outside of the housing.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: May 28, 2013
    Assignee: Electronic Concepts, Inc.
    Inventors: Bernard Lavene, David Curto, Alan Schach
  • Publication number: 20130128393
    Abstract: A method for protecting against a failure within a multi-phase capacitor bank including a plurality of capacitor units each including a plurality of capacitor elements connected to each other, wherein capacitor units are connected to each other and the failure may involve two neighboring capacitor units. The method includes steps of measuring the current of each individual phase of the capacitor bank, calculating the magnitude of an unbalanced current based on the measured currents, measuring the voltage of each individual phase of the capacitor bank, calculating the magnitude of an unbalanced voltage based on the measured voltages, determining an operating point based on the calculated magnitudes of the unbalanced current and the unbalanced voltage, examining where the defined operating point is located in a specified operating region, and initializing a trip signal based on the location of the defined operating point in the specified operating region.
    Type: Application
    Filed: January 16, 2013
    Publication date: May 23, 2013
    Inventor: Zoran Gajic
  • Publication number: 20130107399
    Abstract: A harmonic protection method for a capacitor bank uses a harmonic protection apparatus, which includes a CPU unit, a current and voltage sampling unit, and a protection device. The CPU unit obtains effective value I1 of fundamental wave current of the capacitor bank, and effective value In of the n-th harmonic wave current of the capacitor bank, where n is harmonic order and ranges from 2 to ?, and calculates the true effective value I of current of the capacitor bank by I = I 1 2 + ? n = 2 ? ? k n ? I n 2 provided that kn=rn/r1, kn is the n-th harmonic coefficient , rn is power consumption equivalent resistance of the capacitor bank for the n-th harmonic, r1 is power consumption equivalent resistance of the capacitor bank at a fundamental frequency. When I?1.3 IN, the CPU unit controls the protecting device to disconnect the capacitor bank, provided that IN is a threshold current of the capacitor bank.
    Type: Application
    Filed: January 30, 2011
    Publication date: May 2, 2013
    Inventors: Liang Cao, Hao He, Jianyang Yu, Jiaohong Luo, Zhen Xu
  • Patent number: 8421419
    Abstract: A power converter utilizes one or more nonlinear composite film capacitors constructed solely of polymer anti-ferroelectric (AFE) particle composites and configured as DC-link bus capacitors providing an energy buffer to reduce DC-link voltage ripple.
    Type: Grant
    Filed: September 30, 2009
    Date of Patent: April 16, 2013
    Assignee: General Electric Company
    Inventors: Fengfeng Tao, Yang Cao, Daniel Qi Tan