With Specific Quantity Comparison Means Patents (Class 361/78)
  • Patent number: 11024474
    Abstract: Methods, systems, and apparatus for circuit breakers with integrated safety, control, monitoring, and protection features. In one aspect, a circuit breaker includes, an input and an output, a switch coupled between the input and the output, a sensor configured to measure the current flowing from the input to the output, and a control system coupled to the sensor and the switch, wherein the control system is configured to perform operations including comparing a rate of change of the current measured by the sensor to a threshold rate of change of current, determining that the rate of change of the current measured by the sensor exceeds the threshold rate of change of current for at least a predetermined period of time, and as a consequence of determining that the rate of change of current exceeds the threshold rate of change, opening the switch, thereby disconnecting the input from the output.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: June 1, 2021
    Assignee: Google LLC
    Inventors: Jyoti Sastry, Anand Ramesh, Gregory E. Leyh, Ronald Scott Collyer, Arunava Majumdar, Ankit Somani
  • Patent number: 10989764
    Abstract: The invention relates to a method and a device (10) for localizing an insulation fault in an operating electrical equipment (8) connected to a power supply system (2). Fundamental function blocks of the invention are an electric monitoring device (12), which identifies an insulation fault and communicates a respective fault time to an identifying device (16) via a communication channel (14), said identifying device (16) identifying a faulty operating electrical equipment (8) by electrical equipment of a turning-on/-off signal progress characteristic to the particular operating electrical equipment (8).
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: April 27, 2021
    Assignee: BENDER GMBH & CO. KG
    Inventors: Dirk Pieler, Joachim Wagner
  • Patent number: 10890298
    Abstract: Devices, systems, and methods of detecting and providing an alert regarding the presence of liquid contamination in a pneumatic supply line and/or in a pneumatic instrument are described. A liquid detection device configured to be coupled to the pneumatic supply includes an electronic liquid sensor configured to detect the presence of liquid in the pneumatic supply and a wireless communicator configured to transmit data from the electronic liquid sensor to a wireless communication node. The liquid detection device may be installed at different locations along a pneumatic supply in a plant. The plant network can forward the transmitted message from the communication node onto a plant computer, where and alert or other message may be provided to an operator or other computer system when water or other liquid is detected.
    Type: Grant
    Filed: September 7, 2016
    Date of Patent: January 12, 2021
    Assignee: FISHER CONTROLS INTERNATIONAL LLC
    Inventor: Bruce F. Grumstrup
  • Patent number: 10734990
    Abstract: A current detection circuit (4) detects a device current flowing in the semiconductor device (1). A voltage detection circuit (5) detects a device voltage applied to the semiconductor device (1). A temperature calculation device (6) has a table collecting device temperatures of the semiconductor device (1) respectively corresponding to plural collector currents and plural collector voltages, and reads out a device temperature corresponding to the device current detected by the current detection circuit (4) and the device voltage detected by the voltage detection circuit (5) from the table.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: August 4, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hideo Komo, Shoji Saito, Takeshi Omaru
  • Patent number: 10666156
    Abstract: The present disclosure relates to power converters that convert power in different control modes based on the input voltage. For example, a power converter may include power conversion circuitry that receives electrical energy from an input at an input voltage and provides the electrical energy at an output voltage. The power converter may include control circuitry that receives a signal indicating the input voltage. The control circuitry may select a control mode from a plurality of control modes based at least in part on the input voltage. The control circuitry may control operation of the switch of the power conversion circuitry based at least in part on the control mode selected.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: May 26, 2020
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Bruce A. Hall, Sean D. Robertson
  • Patent number: 10640059
    Abstract: A drive device includes: a first current path that has a high-side MOSFET; a second current path that has a low-side MOSFET; and a third current path connected to the other end portion of a coil and positioned between the first current path and the second current path. The drive device further includes: PWM drive circuits that generate a drive signal through PWM control; and an overcurrent detection circuit that detects that an overcurrent has flowed through the current paths. It is possible to precisely detect the occurrence of a battery short circuit and a ground short circuit by detecting which of the first current path and the second current path an overcurrent has flowed through.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: May 5, 2020
    Assignee: AISIN AW CO., LTD.
    Inventor: Kento Yamashita
  • Patent number: 10620675
    Abstract: The present discourse discloses an intelligent power distribution system and method, where the intelligent power distribution system includes: a load identification module, a management module, and an intelligent power distribution box. The management module is electrically connected to the load identification module and the intelligent power distribution box respectively. The load identification module is adapted to identify an electric device electrically connected to the intelligent power distribution system, acquire information of the electric device, and send the acquired information of the electric device to the management module. The management module is adapted to send, according to the information of the electric device sent by the load identification module, a circuit configuration instruction corresponding to the electric device.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: April 14, 2020
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhen Luo, Weifeng Duan, Qingyin Fang
  • Patent number: 10599507
    Abstract: According to an aspect, a semiconductor apparatus includes semiconductor devices. Each semiconductor device includes: a state monitor that monitors a plurality of functions implemented by the semiconductor device, and outputs state monitoring signals; and an anomaly determination circuit that performs anomaly determination based on the state monitoring signals. When the anomaly determination circuit of a first semiconductor device detects that one or more of the functions of the semiconductor devices are abnormal based on a first anomaly determination result and a second anomaly determination result, the anomaly determination circuit of the first semiconductor device outputs an anomaly detection signal to the semiconductor devices.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: March 24, 2020
    Assignee: Japan Display Inc.
    Inventors: Takuya Ito, Koji Shimizu
  • Patent number: 10567854
    Abstract: A system includes first and second modules, each having a sensor and a processing circuit. First and second fault detection circuits are coupled with respective first and second modules. Each of the first and second fault detection circuits determines from a processed signal output from a corresponding module whether the module is faulted, prevents output of the processed signal when the module is faulted, and enables output of the processed signal when the module is not faulted. A signal processing unit combines the processed signals from the first and second modules to produce a first output signal when neither of the first and second modules is faulted, and the signal processing unit produces a second output signal by utilizing only the processed signal from a non-faulted one of the first and second modules when the other of the first and second modules is faulted.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: February 18, 2020
    Assignee: NXP USA, Inc.
    Inventors: Matthew Wayne Muddiman, Russell Joseph Lynch, Michael Collins
  • Patent number: 10270253
    Abstract: A system for regulating reactive power flow of one or more inverters coupled to an electrical grid. The system includes one or more voltage regulators coupled between a voltage output of a feeder of the electrical grid and one or more inverters configured to generate or consume reactive power as a function of observed voltage. The one or more voltage regulators is configured to provide one or more output control voltages to control reactive power flow of the one or more inverters.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: April 23, 2019
    Assignee: Varentec, Inc.
    Inventors: Anthony Kam, James Simonelli
  • Patent number: 10262811
    Abstract: A control system for an electrical switching apparatus adapted to be installed in a medium voltage or high voltage electrical circuit. The control system includes at least a first module with first control means which are adapted to execute a first control logic, and a second module with second control means which are adapted to execute a second control logic; and at least one communication bus. The first control means and the second control means are adapted to be operatively connected to the at least one communication bus, and to share values of variables associated to the first control logic and to the second control logic through the at least one communication bus.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: April 16, 2019
    Assignee: ABB Schweiz AG
    Inventors: Gabriele Valentino De Natale, Fabio Mannino, Andrea Ricci, Andrea Crespi
  • Patent number: 10243444
    Abstract: A power system for power conversion between at least one power source and a grid is disclosed. The power system includes a power converter having a plurality of semiconductor switches, configured to adapt a power supply to a desired output; and a controller for controlling the power converter in an active mode and an active standby mode, the controller configured to: determine to enter into the active mode or the active standby mode; based on the active mode or the active standby mode is determined, control the power converter to be in a gating state with the grid or to be in a non-gating state with the grid.
    Type: Grant
    Filed: May 18, 2017
    Date of Patent: March 26, 2019
    Assignee: DYNAPOWER COMPANY LLC
    Inventors: Apurva Somani, John C. Palombini
  • Patent number: 10236790
    Abstract: A system to detect application conditions exceeding SELV design limitations and to subsequently warn or take action. A pulse detector is coupled to the switching pole of an output FET of a SELV power supply through an optocoupler and tracks when the FET is commutated off to block conduction. If a pulse occurs more than once in a given period the power supply is declared to be outside of SELV design parameters and warnings are issued or actions are taken.
    Type: Grant
    Filed: December 14, 2016
    Date of Patent: March 19, 2019
    Assignee: Schneider Electric USA, Inc.
    Inventors: Kevin M Jefferies, Benjamin W Edwards, Matthew L White, Richard Karl Weiler
  • Patent number: 10193481
    Abstract: A variable speed wind turbine is arranged to provide additional electrical power to counteract non-periodic disturbances in an electrical grid. A controller monitors events indicating a need to increase the electrical output power from the wind turbine to the electrical grid. The controller is arranged to control the wind turbine as follows: after an indicating event has been detected, the wind turbine enters an overproduction period in which the electrical output power is increased, wherein the additional electrical output power is taken from kinetic energy stored in the rotor and without changing the operation of the wind turbine to a more efficient working point. When the rotational speed of the rotor reaches a minimum value, the wind turbine enters a recovery period to re-accelerate the rotor to the nominal rotational speed while further contributing to the stability of the electrical grid by outputting at least a predetermined minimum electrical power.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: January 29, 2019
    Assignee: VESTAS WIND SYSTEMS A/S
    Inventor: Germán Claudio Tarnowski
  • Patent number: 10184963
    Abstract: A power monitor includes a power conditioning circuit that provides conditioned power to a load. The power conditioning circuit includes at least one sensor to measure a power quality characteristic, e.g., input voltage, load current, temperature, etc. A terminal device implements a diagnostic tool for the power monitor and includes a processor to obtain data indicative of the power quality characteristic over a communication link with the power monitor. The data may be retrieved in response to a trigger condition. A user interface implemented on the terminal device displays the obtained power quality characteristic as at least one temporally varying waveform.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: January 22, 2019
    Assignee: Electronic Systems Protection, Inc.
    Inventors: Robert A. Dawley, Richard J. Billingsley
  • Patent number: 10184969
    Abstract: A first electrical response of a capacitor bank is accessed, the capacitor bank including a plurality of capacitor units arranged in a fixed spatial relationship with each other, each capacitor unit having a nominal impedance; a test electrical signal is provided to the capacitor bank; a second electrical response of the capacitor bank is measured after providing the test electrical signal to the capacitor bank; the first electrical response of the capacitor bank and the second response of the capacitor bank are compared; and whether an impedance of one or more capacitor units in the capacitor bank has changed relative to the nominal impedance is determined based on the comparison.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: January 22, 2019
    Assignee: Eaton Intelligent Power Limited
    Inventors: Mohammad Umar Hashmi, Michael Paul Nowak, Clay Lynwood Fellers, Karl Eric Fender, Santosh Kumar Sharma, Hassan Al-Atat, Damian Antonio Gonzalez, Nudurupati Naga Vasishta Pratap
  • Patent number: 10120355
    Abstract: A vehicle load control device repeats a determination state in which at least one of a plurality of switching elements is turned off from an initial state in which the switching elements are all in an ON state until all of the switching elements have different ON/OFF states, and determines a connection form for each connection portion based on the change between an initial current value detected in the initial state and a determination current value detected for each determination state.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: November 6, 2018
    Assignee: YAZAKI CORPORATION
    Inventors: Satoshi Morita, Yoshihide Nakamura, Yasuyuki Shigezane, Yoshinori Ikuta, Shuuji Satake
  • Patent number: 10110158
    Abstract: Motor control systems and methods. A motor control system includes a temperature compensated power supply configured to receive a supply voltage and output a temperature compensated reference voltage. The reference voltage varies according to an ambient temperature of the motor control system. The motor control system includes a microcontroller configured to receive the temperature compensated reference voltage and a sensed motor current and to produce a corresponding pulse-width-modulated (PWM) motor control signal. The microcontroller is configured to increase a duty cycle of the PWM motor control signal as a function of the temperature compensated reference voltage. The motor control system includes a motor configured to be controlled according to the duty cycle of the motor control signal.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: October 23, 2018
    Assignee: Siemens Schweiz AG
    Inventor: Donald E. Charles
  • Patent number: 9997318
    Abstract: The disclosure relates to a relay having a relay contact, having an electrical connection terminal at which an electrical variable can be tapped off, a control connection for receiving a control signal for opening the relay contact, and a controller. The controller is configured to respond to the reception of the control signal by sensing a change of amplitude of the electrical variable and to open the electrical relay contact with a time delay when a rising amplitude of the electrical variable is sensed, in order to reduce an electrical loading on the relay contact. The controller is further configured to respond to the reception of the control signal by opening in a first disconnection process, to sense the amplitude of the electrical variable, to close the relay contact when the rising amplitude is sensed and to open it again, with a time delay, in a second disconnection process.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: June 12, 2018
    Assignee: PHOENIX CONTACT GMBH & CO. KG
    Inventor: Elmar Schaper
  • Patent number: 9735773
    Abstract: Systems and techniques detecting a reverse current are disclosed. An apparatus comprises a switching circuit coupled to a load and a reference node. The switching circuit may be capable of conducting a reverse current from the reference node to the load when a voltage at the load is lower than a voltage at the reference node. A voltage source has a first terminal coupled to the load, a second terminal configured to follow a voltage at the load, and produces a voltage proportional to a voltage drop across the switching circuit. A comparator circuit is coupled to compare a voltage at the second terminal of the voltage source to the voltage at the reference node and configured to indicate when the reverse current has a magnitude greater than a predetermined threshold.
    Type: Grant
    Filed: April 29, 2014
    Date of Patent: August 15, 2017
    Assignee: Allegro Microsystems, LLC
    Inventors: James McIntosh, Robert D. Christie, Douglas Bryce, Walter Morrison Stewart Wilson
  • Patent number: 9570916
    Abstract: A method for compensating at least partially a frequency deviation in a grid is provided in which a grid frequency is determined and the grid frequency is applied to a grid frequency criterion. If the grid frequency meets the grid frequency criterion, a determination is made as to a set of wind turbines from a wind turbine power plant fleet based on the grid frequency criterion, and a command for a transient frequency response is transmitted to the set of wind turbines.
    Type: Grant
    Filed: October 15, 2013
    Date of Patent: February 14, 2017
    Assignee: Siemens Aktiengesellschaft
    Inventors: Kaj Skov Nielsen, Robert J. Nelson
  • Patent number: 9346550
    Abstract: A method for deicing an aerostructure includes driving a sensing current through a heater element coated to an aerostructure, the heater element having a resistance that is temperature dependent. A resistance of the heater element is monitored. It is determined whether there is icing at the heater element using the monitored resistance of the heater element. A melting current is driven through the heater element when it is determined that there is icing at the heater element.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: May 24, 2016
    Assignee: MESOSCRIBE TECHNOLOGIES, INC.
    Inventors: Richard J. Gambino, Christopher Gouldstone, Jonathan Gutleber, David Hubble, Jason Trelewicz
  • Patent number: 9279795
    Abstract: A flammable gas concentration detection apparatus (1) including an energization control unit (50) that switches the energization state of heating resistor (34) at regular time periods TW, and a gas concentration computation unit (7). The heating resistor has first and second set temperatures CH and CL. The voltage detected across the heating resistor at the first and second set temperatures corresponds to a high and low temperature voltage, respectively. The gas concentration computation unit computes the concentration of a flammable gas based on a first information group including an average high temperature voltage averaging the values of two temporally successive high temperature voltages, the low temperature voltage in a period of time between two high temperature voltages, and an environment temperature in the period of time in which the low temperature voltage is detected.
    Type: Grant
    Filed: July 15, 2013
    Date of Patent: March 8, 2016
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Yusuke Matsukura, Shoji Kitanoya, Masaya Watanabe
  • Patent number: 9281545
    Abstract: A method of controlling discharge in a battery pack, including: measuring an ambient temperature of a battery cell and a voltage of the battery cell; a first discharge processing of discharging the battery cell until the voltage of the battery cell becomes a second voltage lower than a first voltage when the ambient temperature is higher than a first predetermined temperature and the voltage of the battery cell is higher than the first voltage; and a second discharge processing of discharging the battery cell until the voltage of the electrical battery cell becomes a fourth voltage lower than a third voltage when the ambient temperature is lower than the first predetermined temperature and the voltage of the battery cell is higher than the third voltage.
    Type: Grant
    Filed: October 22, 2012
    Date of Patent: March 8, 2016
    Assignee: SONY CORPORATION
    Inventor: Tsuyoshi Nomura
  • Patent number: 9257827
    Abstract: A quadrilateral distance module may be used to detect faults in an electrical power system. A resistive coverage of the quadrilateral distance module may be defined by an adaptive resistance blinder. The adaptive resistance blinder may be adapted to certain power system conditions, such as forward load flow and/or reverse load flow. A forward adaptive resistance blinder may be calculated in parallel with a reverse adaptive resistance blinder. The forward adaptive resistance blinder may use a polarizing quantity adapted for forward load flow conditions, and the reverse adaptive resistance blinder may use a polarizing quantity adapted for reverse load flow conditions. Fault detection may be performed by comparing both the forward and reverse adaptive resistance blinders to power system stimulus and detecting a fault when the stimulus satisfy either blinder.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: February 9, 2016
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Jorge Fernando Calero, Armando Guzman-Casillas, Gabriel Benmouyal
  • Patent number: 9094306
    Abstract: Network power fault detection. At least one first network device is instructed to temporarily disconnect from a power supply path of a network, and at least one characteristic of the power supply path of the network is measured at a second network device connected to the network while the at least one first network device is temporarily disconnected from the network.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: July 28, 2015
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Martin Eckert, Roland Frech, Claudio Siviero, Jochen Supper, Otto A. Torreiter, Thomas-Michael Winkel
  • Patent number: 9018881
    Abstract: Systems and methods are provided for diagnosing stator windings in an electric motor. An exemplary method for diagnosing stator windings in an electric motor involves determining an input energy imbalance across phases of the stator windings for an electrical period of the electric motor and identifying a fault condition when the input energy imbalance is greater than a first threshold value. In some embodiments, an input energy ratio across phases of the stator windings is also determined for the electrical period, wherein the fault condition is identified as a phase-to-phase short circuit fault condition when the input energy ratio is greater than a second threshold value and the input energy imbalance is greater than the first threshold value, or alternatively, as an in-phase short circuit fault condition when the input energy ratio is less than the second threshold value.
    Type: Grant
    Filed: January 10, 2013
    Date of Patent: April 28, 2015
    Assignee: GM Global Technology Operations LLC
    Inventors: Xiaofeng Mao, Lei Hao
  • Publication number: 20150062766
    Abstract: A method is disclosed for detecting a defective amplifier. The device includes an electronic tripping unit which respectively carries out a check in order to determine whether the energy through the switch satisfies a condition and trips the switch if the condition has been satisfied; and an analog/digital converter respectively outputting the two differently amplified analog signals as digital values. In an embodiment of the method, a decision is made regarding which of the two digital values is used to check the condition. To detect defective amplifiers in the signal conditioning device of tripping units during ongoing operation, a check is carried out to determine whether at least one of the two digital values is in a predefined range; if so, whether the two digital values each belonging to the same time are in a predefined tolerance range. A fault is signaled if this is not the case.
    Type: Application
    Filed: July 22, 2014
    Publication date: March 5, 2015
    Inventor: Stefan WIDMANN
  • Publication number: 20150062767
    Abstract: The protecting relay may include: an input conversion unit configured to receive the analog signal and sample the analog signal according to a pre-set sampling period; a multiplexer configured to selectively output any one of a plurality of signals output from the input conversion unit; a programmable gain amplifier (PGA) configured to set different gain values according to signals output from the multiplexer, and amplify a signal output from the multiplexer with a pre-set gain value; an analog-to-digital converter (ADC) configured to convert an analog signal output from the PGA into a digital signal; and a controller configured to determine whether the analog signal received through the input conversion unit includes a surge signal based on the plurality of sampled data which have been converted into the digital signal, and determine whether to perform a relay function based on the determination results.
    Type: Application
    Filed: August 18, 2014
    Publication date: March 5, 2015
    Applicant: LSIS CO., LTD.
    Inventor: Kyung Won PARK
  • Publication number: 20150036250
    Abstract: An over-current and over-voltage protection circuit for an electronic cigarette, comprising a battery and an interface, a control unit and a charging detection switch unit; the control unit is configured for calculating an actual charging current according to the first working voltage and determining whether the actual charging current exceeds a preset charging current threshold value, and sending a first charging controlling signal to the charging detection switch unit; the control unit is further configured for real-timely detecting an input voltage of the interface, determining whether the input voltage of the interface is in over-voltage status, and controlling a turned-on or turned-off operation of the charging detection switch unit. The over-current over-voltage protection circuit and method eliminate the security risk of the battery pole not having a charging management circuit in the non-normal charging status.
    Type: Application
    Filed: December 9, 2013
    Publication date: February 5, 2015
    Inventor: Zhiyong Xiang
  • Patent number: 8946859
    Abstract: An integrated circuit chip including a plurality of parallel wells of alternated conductivity types formed in the upper portion of a semiconductor substrate of a first conductivity type, and a device of protection against attacks including: between the wells, trenches with insulated walls filled with a conductive material, said trenches extending from the upper surface of the wells to the substrate; and a circuit capable of detecting a modification of the stray capacitance formed between said conductive material and a region of the chip.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: February 3, 2015
    Assignee: STMicroelectronics (Rousset) SAS
    Inventors: Mathieu Lisart, Alexandre Sarafianos
  • Publication number: 20150016001
    Abstract: A method, device and computer program product for preventing moisture damage to electronic circuitry of a device may include monitoring for a predetermined capacitance criterion on a surface of the device; and automatically powering off the device in response to detecting the predetermined capacitance criterion.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 15, 2015
    Inventors: Aaron J. Quirk, David A. Sakmar, Carlos L. Torres, Lin Sun, Rohith K. Ashok
  • Publication number: 20150016000
    Abstract: A device including a system for preventing moisture damage to the device includes a processor and a module operable on the processor for monitoring for a predetermined capacitance criterion on a surface of the device. The device is automatically powered off in response to detecting the predetermined capacitance criterion.
    Type: Application
    Filed: July 10, 2013
    Publication date: January 15, 2015
    Inventors: Aaron J. Quirk, David A. Sakmar, Carlos L. Torres, Lin Sun, Rohith K. Ashok
  • Publication number: 20140355159
    Abstract: According to one embodiment, there is provided an integration unit for protecting a power system from a failure includes an A/D converter configured to convert a quantity of electricity of a power system into digital data. The integration unit includes a communication interface unit configured to transmit the digital data to a process bus connected to a protection unit configured to protect the power system. The integration unit includes a relay calculation unit configured to execute a relay calculation operation to detect an abnormality of the power system based on the digital data and to output, based on the calculation operation result, a circuit breaking signal to trip and drive a circuit breaker inserted in the power system.
    Type: Application
    Filed: August 18, 2014
    Publication date: December 4, 2014
    Inventors: Hiroyuki Maehara, Shigeki Katayama, Tomonori Nishida, Michihiko Inukai
  • Patent number: 8891216
    Abstract: A system that detects electrical disconnection of one connector from another connector includes a detection circuitry and a protection circuitry. The detection circuitry detects that a plug connector has been electrically disconnected from a corresponding receptacle connector. In response to the detection, the detection circuitry sends a signal to the protection circuitry. In response to the signal, the protection circuitry lowers or terminates power being supplied to a host device via one of the contacts of the plug connector. This helps to prevent shocks/shorts that may be caused by accidental disconnection of the plug connector.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: November 18, 2014
    Assignee: Apple Inc.
    Inventors: Scott Mullins, Alexei Kosut, Jeffrey J. Terlizzi, Jahan Minoo
  • Publication number: 20140321013
    Abstract: Some embodiments provide interrupter systems comprising: a first electrode; a second electrode; a piston movably located at a first position and electrically coupled with the first and second electrodes establishing a closed state, the piston comprises an electrical conductor that couples with the first and second electrodes providing a conductive path; an electromagnetic launcher configured to, when activated, induce a magnetic field pulse causing the piston to move away from the electrical coupling with the first and second electrodes establishing an open circuit between the first and second electrodes; and a piston control system comprising a piston arresting system configured to control a deceleration of the piston following the movement of the piston induced by the electromagnetic launcher such that the piston is not in electrical contact with at least one of the first electrode and the second electrode when in the open state.
    Type: Application
    Filed: April 25, 2013
    Publication date: October 30, 2014
    Inventors: Joel Lawton Drake, Robert Kratz
  • Publication number: 20140307356
    Abstract: Provided is an operating method of an electronic device including a first processor, a humidity sensor, a second processor controlling the humidity sensor, and a battery, wherein the second processor and the battery are waterproofed. The method may include: detecting a power supply event from the battery; supplying a power from the battery to the second processor controlling the humidity sensor and not supplying the power to the first processor; determining, by the second processor, a humidity of the electronic device by using the humidity sensor; and when the humidity of the electronic device is greater than a first reference humidity, cutting off power supply from the battery and when the humidity of the electronic device is less than the first reference humidity, supplying the power to the first processor.
    Type: Application
    Filed: April 14, 2014
    Publication date: October 16, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Hyun-Ju HONG, Seung-Ki CHOI
  • Patent number: 8848329
    Abstract: A high-side output transistor and a low-side output transistor of an output circuit control voltages of conductors, which connect a power supply terminal and ground, and outputs a voltage signal to an output terminal through an output conductor. A voltage output circuit detects a voltage applied to the high-side output transistor based on a potential difference of a first resistor provided closer to the output terminal side. A comparator circuit outputs a signal to turn off a first switch and a second switch provided in the conductors, when the output voltage of the voltage output circuit exceeds a reference voltage Vr.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: September 30, 2014
    Assignee: Denso Corporation
    Inventors: Takamitsu Kubota, Yoshiyuki Kono, Toru Shimizu
  • Publication number: 20140268458
    Abstract: Apparatus and methods for selective protection of an electrical load from disturbances on an input power line. A power protection circuit includes a selectively variable inrush current limiting circuit and a switch for disconnecting the input power line from the load. A control circuit determines that the electrical load is in a first operational state, such as a standby mode or normal operation, or a second operational state, such as full operation at rated current. The power protection circuit provides variable inrush current limiting to the electrical load in response to a first category of disturbances when the electrical load is in the first operational state. The power protection circuit inhibits disconnecting the electrical load in response to a second category of disturbances when the electrical load is in the second operational state. Species of selectively variable current limiting circuits are also described.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Innovolt, Inc.
    Inventors: Vincent P. Luciani, Eugene Bright
  • Patent number: 8824114
    Abstract: A circuit comprises a first conductor, a second conductor, and a first detect and disconnect circuit. The first conductor is coupled to a first power supply voltage terminal. The second conductor is positioned a first predetermined distance from the first conductor. The first detect and disconnect circuit has a first terminal coupled to the second conductor and a second terminal coupled to a second power supply voltage terminal. The first detect and disconnect circuit detects a first electrical property change between the second conductor and the first conductor. In response to detecting the change in the first electrical property, the second conductor is disconnected from the second power supply voltage terminal. A method for manufacturing a semiconductor device comprising the circuit is also provided.
    Type: Grant
    Filed: April 21, 2010
    Date of Patent: September 2, 2014
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Jason C. Perkey, Scott S. Roth, Tim J. Zoerner
  • Publication number: 20140233141
    Abstract: A system for autonomous protection from fires and electrical shock of components used in construction of photovoltaic arrays is disclosed. The system detects conditions that left unattended will result in conflagration of combustible materials and unwanted electrification. The disclosed system provides an active control mechanism that operates to take defective components off line and thus provide protection from fire and electrification hazards that otherwise could arise. The system also provides means for annunciation and notification when actions are taken. The system can be used, for example, to determine that a photovoltaic (PV) module is at risk of conflagration of its flammable structural elements due to intense heat of plasma produced by a direct current (DC) arc at a point in the grid of conductors that collect and carry current from photovoltaic cells exposed to solar irradiation.
    Type: Application
    Filed: February 19, 2014
    Publication date: August 21, 2014
    Inventors: Kenneth Gerald Blemel, Francis Edward Peter, Kenneth Dominick Blemel, Peter Andrew Blemel
  • Publication number: 20140198419
    Abstract: A method, device, and system for mitigating the effect of a power spike on a protective device. The device can receive an input signal and determine whether the input signal exceeds a threshold value. If so, the device simultaneously starts an initial time period and starts a latch time period, where the latch time period is greater than the initial time period. During the initial time period, the device replaces the input signal with a set value signal. After the initial time period ends and during the remainder of the latch time period, the device prevents the input signal from being replaced by the set value signal. If, during the remainder of the latch time period, the input signal exceeds the threshold value, a trip signal may be generated by a protective device.
    Type: Application
    Filed: January 11, 2013
    Publication date: July 17, 2014
    Applicant: Cooper Technologies Company
    Inventor: Ljubomir A. Kojovic
  • Publication number: 20140191874
    Abstract: An electronic device includes a port for connecting the electronic device to other electronic devices and a moisture detector configured to detect an electrically conductive liquid in the first port. The moisture detector is configured to maintain a voltage on a first electrical contact of the port and to detect a short circuit between the first electrical contact and a second electrical contact of the port. The moisture detector determines that the electronic device has been exposed to an electrically conductive liquid if the monitor module detects the short circuit. The moisture detector may also put the electronic device into safe mode if it is exposed to an electrically conductive liquid.
    Type: Application
    Filed: January 8, 2014
    Publication date: July 10, 2014
    Applicant: HzO, Inc.
    Inventors: Blake Stevens, Max Sorenson
  • Patent number: 8767364
    Abstract: When a short-circuited FET is identified as one of low-side FETs, maximum phase voltages of three phases are detected when a steering operation is performed by a driver, and the detected maximum phase voltages of the three phases are compared with one another to identify a short-circuit phase. On the other hand, when a short-circuited FET is identified as one of high-side FETs, minimum phase voltages of the three phases are detected when a steering operation is performed by the driver, and the detected minimum phase voltages of the three phases are compared with one another to identify a short-circuit phase.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: July 1, 2014
    Assignee: JTEKT Corporation
    Inventor: Shigekazu Okumura
  • Publication number: 20140139961
    Abstract: Disclosed herein is a device that protects against electrical shock hazards involving two circuit conductors. The device continuously evaluates the load characteristics of electrical equipment and automatically provides feedback on status and changes of such equipment. The device has a “learning mode” wherein it stores the load characteristics of loads connected to the device. The device also has an “protection mode” (or “normal mode”) wherein the devices compares connected load characteristics to stored load characteristics, and based on this comparison determines if an electrical fault is present. If the device determines that an electrical fault is present, the device then takes action to protect against electrical shock, such as by disconnecting the system from power.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 22, 2014
    Inventors: Tyrone J. Mellon, JR., Ryan Alan Munden
  • Publication number: 20140104737
    Abstract: A modular power distribution system comprises a chassis; and a backplane including a power input, and a plurality of module connection locations. A plurality of modules are mounted in the chassis, each module mounted to one of the module connection locations. Each module includes: (i) an OR-ing diode; (ii) a circuit protection device; (iii) a microprocessor controlling the circuit protection device; and (iv) a power output connection location. A circuit option switch is located on each module for setting the current limits for each module. A control module is provided connected to the backplane.
    Type: Application
    Filed: May 23, 2013
    Publication date: April 17, 2014
    Applicant: ADC Telecommunications, Inc.
    Inventors: Joseph C. Coffey, Bradley Blichfeldt
  • Publication number: 20140098449
    Abstract: A method and an arrangement are disclosed for detecting islanding operation of a distributed power generator. The method can include determining a frequency of a grid to which the distributed power generator is connected, measuring a rate of change of the frequency of the grid at an output of the distributed power generator, determining a threshold value for an alteration speed, comparing the rate of change of the frequency of the grid with the threshold value, and detecting islanding operation when the measured rate of change of the frequency exceeds the threshold value for a certain time period.
    Type: Application
    Filed: October 9, 2013
    Publication date: April 10, 2014
    Applicant: ABB Oy
    Inventors: Janne HELLBERG, Kimmo Heinonen, Jari Uusimäki
  • Patent number: 8693154
    Abstract: A protection relay for protecting an electric system, includes means a manner of a time multiplier value, a manner of calculating, with the received time multiplier value, and an inverse definite time dependency having an exponentiation function. The dependency defines a relationship between an excitation level of an input signal to the relay and an operating time of the relay. The relay further a manner of shifting the dependency to a predefined calculation space, and includes a manner of applying, during execution, the dependency shifted to the predefined calculation space when determining an operating condition of the relay.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: April 8, 2014
    Assignee: ABB Technology AG
    Inventors: Kari Vanhala, Petri Koivula
  • Patent number: 8687331
    Abstract: For a system to avoid abnormal operation caused by a shorted parameter setting pin of an integrated circuit, a protection apparatus and method apply a buffered reference voltage to the parameter setting pin to define an internal parameter of the integrated circuit by the buffered reference voltage and an external element connected to the parameter setting pin, and detect the rapid variation of the internal parameter to trigger a shutdown signal or slow down the speed of the variation of the internal parameter reflected to an adjustable signal of the integrated circuit.
    Type: Grant
    Filed: April 22, 2011
    Date of Patent: April 1, 2014
    Assignee: Richtek Technology Corp.
    Inventors: Shao-Hung Lu, Jing-Meng Liu, Jo-Yu Wang, Isaac Y. Chen, An-Tung Chen
  • Patent number: 8675327
    Abstract: The present invention relates to methods for providing impedance protection differentiating between in-zone and out-of-zone faults based on instantaneous, digitally derived operating and polarizing distance comparator signals. The method uses a pair of fast orthogonal filters to derive D and Q components of the input voltages and currents. Two sets of operating and polarizing signals are derived for better speed of response under varying fault moment with respect to the peaks and zero crossings of power signals. Three stages of comparison between the operating and polarizing impedance terms are used. These comparator stages use half a cycle averaging windows, and three-quarters-of-a-cycle windows. The first stage of comparison is based on energy comparator responding to both magnitude and phase information in the signals. Stages 2 and 3 are of phase comparison type, responding mostly at the phase information and neglecting the magnitude information for better immunity to noise and signal distortions.
    Type: Grant
    Filed: March 30, 2007
    Date of Patent: March 18, 2014
    Assignee: General Electric Company
    Inventors: Bogdan Z. Kasztenny, Dale S. Finney, Iulian Raducanu