Voltage And Current Patents (Class 361/79)
  • Patent number: 10424954
    Abstract: A power adaptor (100) includes a power conversion unit (110) and a power line (121). The power conversion unit (110) charges a terminal (200) via the power line (121). The power adaptor (100) further includes a communication unit (130) and a data line (122). When the power adaptor (100) is coupled to the terminal (200), the communication unit (130) communicates with the terminal (200) via the data line (122). The power adaptor (100) charges the terminal (200) still using the power line (121). Furthermore, when the power adaptor (100) is coupled to the terminal (200), the power adaptor (100) communicates with the terminal via the data line (122). Compared with the method of data and power time-division multiplexing the power line, the heating phenomenon of the power line caused by an excessively high load of a signal isolation unit can be effectively avoided.
    Type: Grant
    Filed: November 11, 2014
    Date of Patent: September 24, 2019
    Assignee: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD.
    Inventor: Jialiang Zhang
  • Patent number: 10414276
    Abstract: A system for recharging a hybrid vehicle is provided with two motors and supplies commercial electricity to neutral points of the motors when a connection of a recharging stand is detected, forms an electricity loop through the neutral points of the first motor and the second motor according to a phase of the commercial electricity, and carries out a recharging mode by detecting at least a voltage of a DC link capacitor in a voltage converter, a voltage of a smoothing capacitor, and a battery voltage. According to the system, a current control value or a voltage control value is selected according to the recharging mode in order to recharge a battery based on the current control value or the voltage control value.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: September 17, 2019
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Hong-seok Song, Ki-young Jang, Junghong Joo
  • Patent number: 10367407
    Abstract: A method and a device for controlling a voltage-controlled power semiconductor switch that can be switched off again, which has a first and a second connection and a control connection and which is conductive in the switched on state between the first and the second connection is provided. Firstly, a first control voltage comprising a first value is applied to the control connection to switch on the power semiconductor switch. Subsequently, conditions are detected, which indicate the progress of the switch-on procedure of the power semiconductor switch. As soon as conditions are detected, which are indicative of the fact that the switch-on procedure is deemed to be complete, a second control voltage comprising a second value higher than the first value is applied to the control connection to operate the power semiconductor switch in the conductive state with a higher control voltage to reduce its conduction losses.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: July 30, 2019
    Assignee: GE ENERGY POWER CONVERSION TECHNOLOGY LTD
    Inventor: Martin Geske
  • Patent number: 10291139
    Abstract: A transformer circuit includes a first transformer, a second transformer and an inductor, where a first terminal of the first transformer is coupled to a first terminal of the second transformer. The inductor is coupled between a second terminal of the first transformer and a second terminal of the second transformer.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: May 14, 2019
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Grover Victor Torrico-Bascopé
  • Patent number: 10291035
    Abstract: A system may comprise a first switch connected to an output of a first power source, a second switch connected to an output of a second power source, a first sensor connected to an output of the first switch, a second sensor connected to an output of the second switch, a third switch connected to the first sensor and the second sensor and connected to a load, and a control device connected to the first switch, the second switch, the first sensor, the second sensor, and the third switch.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: May 14, 2019
    Assignee: Juniper Networks, Inc.
    Inventors: David K. Owen, Jaspal S. Gill
  • Patent number: 10250028
    Abstract: An electrical switch is disclosed for switching an electric current between a feed and an outgoer. The electrical switch can be mounted in a switchgear assembly and as a result electrical contact can be made with the electrical switch by a feed and an outgoer of the switchgear assembly. In one embodiment, the electrical switch includes an internal voltage tap for supplying power to a switch-internal electronics system and a changeover switch. The changeover switch adjusts the electrical connection between the feed or the outgoer and the internal voltage tap.
    Type: Grant
    Filed: May 4, 2016
    Date of Patent: April 2, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Henry Franke, Stefan Haebel, Rainer Huentemeier
  • Patent number: 10224713
    Abstract: A load driving device includes a switching element, a detector, a determination portion, a controller, and a threshold set portion. The switching element is arranged between a voltage source and a load, or between the load and a ground. The switching element is turned on to supply electric power from the voltage source to the load. The detector detects a current flowing in the switching element. The determination portion compares a detection value of the detector and a threshold value, and determines whether an overcurrent flows in the switching element. The controller controls the switching element based on a determination result of the determination portion. The threshold set portion sets the threshold value to a higher value as voltage of the voltage source is higher. As such, responsiveness of the load driving device is improved and the switching element is protected when a short-circuiting occurs.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: March 5, 2019
    Assignee: DENSO CORPORATION
    Inventor: Ippei Kawamoto
  • Patent number: 10211824
    Abstract: A semiconductor device includes a drive control circuit which drives a gate terminal of an IGBT. The drive control circuit includes a state machine control circuit, a base data memory and a current drive circuit which drives the IGBT on the basis of driving current information stored in the base data memory. The state machine control circuit reads out driving current information for rising stored in the base data memory a plurality of times in a predetermined time period and drives the current drive circuit at rising of a PWM signal, and reads out driving current information for falling stored in the base data memory a plurality of times in a predetermined time period and drives the current drive circuit at falling of the PWM signal.
    Type: Grant
    Filed: October 26, 2017
    Date of Patent: February 19, 2019
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Makoto Tsurumaru
  • Patent number: 10069401
    Abstract: A protection circuit applied to a convertor including M pieces of driving switch modules each coupled to a power source, a load and one of M sets of driving signals. The ith driving switch module is controlled by the ith set of driving signals to selectively enable current paths between the power source and the load. A first sub protection circuit in the protection circuit includes a first protection switch module and a first detection module coupled to the first protection switch module. When the ith set of driving signals indicates an error event, the first protection switch module selectively couples the ith set of driving signals to a reference voltage according to a first detection signal. M and i are positive integers, and i is not larger than M.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: September 4, 2018
    Assignee: Industrial Technology Research Institute
    Inventors: Ming-Hung Yu, Po-Li Chen
  • Patent number: 9910075
    Abstract: An overvoltage detection circuit coupled to an external power supply via a voltage supply line and comprising a transistor comprising first terminal coupled to the voltage supply line, second terminal coupled to the first terminal via a resistor, the second terminal coupled to a parasitic capacitor, the transistor configured to receive an overvoltage spike from the external power supply on the first terminal, and provide an output voltage on third terminal of the transistor to indicate detection of the overvoltage spike when it has a duration less than a time constant based on the resistor and the parasitic capacitor and amplitude that exceeds a threshold voltage of the transistor. The overvoltage detection circuit further comprises a monitor circuit configured to receive the output voltage from the transistor and provide a digital signal providing a notification of the detected overvoltage spike from the external power supply on the voltage supply line.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: March 6, 2018
    Assignee: Western Digital Technologies, Inc.
    Inventors: William K. Laird, Joseph J. Crowfoot
  • Patent number: 9748055
    Abstract: An output-switch control system for an AC-DC power supply includes a push-button switch that has two triggers. The triggers correspond to different contacts of a detecting circuit, respectively. When the push-button switch is pressed to make the triggers and the contacts turn into a close-circuit state form an open-circuit state, the detecting circuit outputs a power-source-on signal, and when the push-button switch is pressed again, and either of the triggers and the contact turn into the close-circuit state form the open-circuit state, the detecting circuit outputs a power-source-off signal immediately. With the dual-transition signal certification at the contacts, safe output-switch control can be achieved, so as to provide a user with operational safety.
    Type: Grant
    Filed: March 12, 2015
    Date of Patent: August 29, 2017
    Assignee: CHYNG HONG ELECTRONIC CO., LTD.
    Inventor: Mu-Chun Lin
  • Patent number: 9698654
    Abstract: An apparatus for controlling a high-power drive device external to a package of a motor drive circuit includes a motor drive circuit. The motor drive circuit includes a driver to control the high-power drive device based on a first reference voltage, a second reference voltage, and a control signal based on a received control signal. A fault circuit generates a failure indicator based on a voltage across terminals of the high-power drive device. A fault condition is based on the failure indicator. A first terminal coupled to the driver charges a node of the high-power drive device over a first length of time in response to an absence of the fault condition and a first level of the control signal. A second terminal coupled to the driver discharges the node over a second length of time different from the first length of time.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: July 4, 2017
    Assignee: Silicon Laboratories Inc.
    Inventors: Paulo Santos, Tufan Karalar, Michael J. Mills, Ross Sabolcik, Rudye McGlothlin, Michael L. Duffy, András Vince Horvath
  • Patent number: 9680397
    Abstract: A three-phase inverting apparatus and a control method and a paralleled power conversion system thereof are provided. The control method is suitable for controlling a three-phase inverter having a plurality of switch sets, a first inductor, a second inductor, and a third inductor. The control method includes following steps: obtaining a DC bus voltage, a plurality of phase voltages, and a plurality of phase currents; obtaining inductances of the first, the second, and the third inductors; calculating a plurality of switch duty ratios by a division-summation control means according to the DC bus voltage, the phase voltages, current variations of the phase currents, the inductances, and a switching cycle based on a sinusoidal pulse width modulation (SPWM); and generating corresponding control signals based on the switch duty ratios so as to control a switching of the switch sets.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: June 13, 2017
    Assignee: National Tsing Hua University
    Inventors: Tsai-Fu Wu, Chih-Hao Chang, Ying-Yi Jhang, Li-Chiun Lin
  • Patent number: 9673747
    Abstract: A control apparatus of a rotary machine controls drive of the rotary machine with winding groups. The control apparatus includes electric power converters in multiple systems, a failure detection portion, and a controller. The electric power converter has switching elements in an upper arm and a lower arm, and converts direct current power. The failure detection portion detects a failure of an electric power converter or a failure of a winding group. The controller operates the switching elements and controls electricity supply. When the failure detection portion detects the failure, the controller stops output to an electric power converter in a failure system, and the controller reduces a total number of times of switching per unit time of the switching elements in a normally operating system.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: June 6, 2017
    Assignee: DENSO CORPORATION
    Inventors: Kouichi Nakamura, Takashi Suzuki
  • Patent number: 9641220
    Abstract: A relay for control of a network protector located on a low voltage side of a transformer with a set of three phases, the relay having at least one route for power to be provided to the relay from at least one of the set of three phases taken from a transformer side of the network protector so that the relay may have power and be functional before the network protector is closed to provide power into a dead network.
    Type: Grant
    Filed: February 28, 2014
    Date of Patent: May 2, 2017
    Assignee: DGI Creations, LLC
    Inventors: John C. Papson, John R. Weber, Jr.
  • Patent number: 9478968
    Abstract: A method for detecting a short circuit on a multiphase electrical energy supply network line includes recording current and voltage sampled values and generating a fault signal upon a fault evaluation performed by an electrical protection device indicating a short circuit. Instantaneous reference voltage values are calculated from instantaneous current and voltage sampled values recorded before the short, and instantaneous comparative voltage values are calculated from instantaneous current and voltage sampled values recorded before the short and instantaneous current and voltage sampled values recorded during the short, to generate a fault signal quickly. Then a rectified reference voltage value is calculated from consecutive instantaneous reference voltage values, and a rectified comparative voltage value is calculated from consecutive instantaneous comparative voltage values.
    Type: Grant
    Filed: July 9, 2010
    Date of Patent: October 25, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Joerg Blumschein, Cezary Dzienis, Matthias Kereit
  • Patent number: 9470748
    Abstract: The present disclosure pertains to systems and methods for detecting faults in an electric power delivery system. In one embodiment, a system may include a data acquisition subsystem configured to receive a plurality of representations of electrical conditions. The system may also include a traveling wave differential subsystem configured to determine an operating quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may also determine a restraint quantity based on the plurality of representations of electrical conditions. The traveling wave differential subsystem may detect a traveling wave generated by the fault based on the plurality of representations. A fault detector subsystem may be configured to declare a fault based on a comparison of the operating quantity and the restraint quantity. A protective action subsystem may implement a protective action based on the declaration of the fault.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: October 18, 2016
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventors: Edmund O. Schweitzer, III, Mangapathirao Venkata Mynam, Armando Guzman-Casillas, Bogdan Z. Kasztenny, Veselin Skendzic, Tony J. Lee, David E. Whitehead
  • Patent number: 9417273
    Abstract: Accurate measurements of electrical power at various points of a power grid is becoming more important and, at the same time, is getting more difficult as the old power distribution model of a few, large power generating stations and a multitude of relatively linear loads is replaced by a newer model containing a multitude of smaller, and to some degree unpredictable power sources, as well as a multitude of not always linear and often smart (essentially also unpredictable) loads. Embodiments of the invention provide for high accuracy voltage, current and power measurements of quasi-stationary and stationary waveforms in single and multiple phase power systems. Precision AC voltage, current, phase, power and energy measurements in power networks may be measured with current ranges from 1 mA to 20 kA and voltage ranges from 1V to 1000 kV and in a frequency range from a few hertz to one hundred kilohertz.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: August 16, 2016
    Assignee: Guildline Instruments Limited
    Inventors: Tomasz Barczyk, Petar Miljanic, Iain Page
  • Patent number: 9373950
    Abstract: The invention relates to Modular multilevel converter valve protection method, the modular multilevel converter valve consists of 6 arms, the arm includes sub modules, 1 arm is controlled by 1 control host, 6 control hosts is controlled by 1 summary control host, the method of the invention includes that the arm realizes locking sub module, bypass sub module, trip requests and system switching request and the summary control host implements summary and control response. The invention improves the reliability of two protection system through the use of dual redundancy protection method, clears the protection division through the layered protection frame of the upper summary control host and multi arm control host. And finally, it improves the whole safety and reliability of the modular multilevel converter valve.
    Type: Grant
    Filed: November 29, 2011
    Date of Patent: June 21, 2016
    Assignees: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE, STATE GRID CORPORATION OF CHINA, CHINA-EPRI ELECTRIC POWER ENGINEERING CO., LTD, CHINA ELECTRIC POWER RESEARCH INSTITUTE
    Inventors: Yang Gao, Yuefeng Yang, Renqiu Wang, Zhiyuan He, Xinggang Zhang, Minhua Xie
  • Patent number: 9356373
    Abstract: A connector which dispenses with an actuator and lowers profile while prevent damage to conducive path portions. A metal plate of the connector includes a first supporting portion mounted on a printed wiring board, and a second supporting portion connected to the first supporting portion via a linking portion in a manner movable in an FPC sandwiching direction. The second supporting portion includes a spring portion for urging a movable portion against FPC, a pair of locking pieces for increasing distance between contact point portions of the supporting portions by moving the movable portion away from the first supporting portion using an FPC inserting force, and suppressing removal of completely inserted FPC. Connection portions of conductive path portions are arranged on first and second protuberance portions at opposite ends of the first supporting portion in a connector left-right direction, along the connector front-back direction.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: May 31, 2016
    Assignee: JAPAN AVIATION ELECTRONICS INDUSTRY, LIMITED
    Inventors: Tetsuya Komoto, Ryuzo Shimeno
  • Patent number: 9223667
    Abstract: A method for identifying root cause failure in a multi-parameter self learning machine application model is presented. At least one multi-function sensor having the capability to measure at least one of a voltage and current of the machine application model is provided. The method includes measuring voltages and currents of a multi-phase load with the multi-function sensors in a passive manor and calculating at least one of a time-varying variable KW, PF, kVAr, or Z out of the measured voltages and currents. The method further provides calculating a first, second or third order derivative of the time-varying variable and classifying segments of at least one of the time-varying variables depending on a state. Then, a step of choosing at least one of the variables and learning their normal behavior is undertaken. Finally, normal behavior is compared to a pattern difference and a root-cause meaning to the pattern difference is identified.
    Type: Grant
    Filed: November 8, 2012
    Date of Patent: December 29, 2015
    Assignee: AKTIEBOLAGET SKF
    Inventors: Matthew Barber Sanford, Ernesto Jorge Wiedenbrug
  • Patent number: 9209618
    Abstract: A gate drive unit includes a measurement unit, a multi-resistive driving device, and a processing unit. The measurement unit measures a voltage across main terminals of a power switch. The driving device includes plural individually controllable resistive elements. The processing unit controls a control voltage applied to a control electrode of the power switch to activate the power switch. The processing unit individually activates or deactivates the resistive elements of the multi-resistive driving device to change which of the resistive elements at least partially conducts the control voltage to the power switch at different times responsive to the voltage across the main terminals representing a short circuit event. The processing unit changes which of the resistive elements are activated or deactivated to control a rate at which the control voltage decreases.
    Type: Grant
    Filed: May 8, 2014
    Date of Patent: December 8, 2015
    Assignee: General Electric Company
    Inventors: Alvaro Jorge Mari Curbelo, Thomas Alois Zoels, Miguel Garcia Clemente, Philipp Leuner, Nicolas Wannenmacher
  • Patent number: 9207266
    Abstract: A power consumption management system includes: a main part that is connected to a power line; a breaker that is electrically connected to the main part, and limits a current supplied to a load to a predetermined set value; a sensor unit including a current sensor and a signal processing part. The current sensor measures a current supplied from the main part to the breaker, and outputs a current detection signal based on the measured current. The signal processing part receives the current detection signal over a predetermined time, determines a range of a signal level from the received current detection signal, and adjusts an input range of the current detection signal in accordance with the determination result.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: December 8, 2015
    Assignee: NEC CORPORATION
    Inventor: Tenda Shibuya
  • Patent number: 9172365
    Abstract: A circuit performs a method for controlling turn-off of a semiconductor switching element. The method includes determining at least one operating parameter for the semiconductor switching element during an operating cycle and determining a gate discharge current based on the at least one operating parameter. The method further includes supplying the gate discharge current to a gate of the semiconductor switching element during a subsequent operating cycle to turn off the semiconductor switching element.
    Type: Grant
    Filed: August 31, 2013
    Date of Patent: October 27, 2015
    Assignee: Freescale Semiconductor, Inc.
    Inventors: Ibrahim S. Kandah, Fred T. Brauchler, Steven R. Everson
  • Patent number: 9166444
    Abstract: A control circuit has an input terminal for receiving an input voltage, an energy accumulator for storing electric energy from the input terminal and supplying power to an electrical load, and an over-voltage protection unit for lowering the voltage at the input terminal when the voltage at an output terminal of the energy accumulator exceeds a predetermined threshold value. A motor device combines the control circuit with an electric motor as the load.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: October 20, 2015
    Assignee: JOHNSON ELECTRIC S.A.
    Inventors: En Hui Wang, Fei Xin, Chi Ping Sun, Ming Li Zhang
  • Patent number: 9160162
    Abstract: A protection circuit includes a protection module and a fan electrically connected to the protection module. The protection module includes a control chip, an inverter, and an electronic switch. An input terminal of the inverter is electrically connected to a voltage output terminal and the fan, and further electrically connected to a clear pin of the control chip. An output terminal of the inverter is electrically connected to a preparation pin of the control chip. A first terminal of the electronic switch is electrically connected to an output pin of the control chip. The first and second terminals of the electronic switch are electrically connected to a power source terminal. A third terminal of the electronic switch is electrically connected to the voltage output terminal. When the fan short-circuits, the power source terminal stops supplying power to the fan through the voltage output terminal.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: October 13, 2015
    Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Kang Wu, Bo Tian
  • Patent number: 9151802
    Abstract: Systems and methods for detecting fault conditions in a rotor of an electric induction motor are disclosed. In certain embodiments, a method for detecting fault conditions may include sampling a plurality of currents from an electric induction motor to obtain a plurality of current data points, calculating a global maximum magnitude of the plurality of current data points in the frequency domain over a range of predetermined frequencies, calculating an average magnitude of the plurality of current data points in the frequency domain over the range of predetermined frequencies, and declaring a motor rotor fault condition based on a comparison between the average magnitude and a first predetermined threshold, a comparison between a difference between the global maximum magnitude and the average magnitude and a second predetermined threshold, and a comparison between the global maximum magnitude and at least a third predetermined threshold.
    Type: Grant
    Filed: February 7, 2012
    Date of Patent: October 6, 2015
    Assignee: Schweitzer Engineering Laboratories, Inc.
    Inventor: Marcos A. Donolo
  • Patent number: 9093839
    Abstract: A method of protecting a synchronous machine (10) connected to an electricity network (12) against pole-slip comprises the steps of continuously monitoring a power transfer angle (?) between an electromotive force (EMF) of the machine and a reference voltage Vref. In the event of a fault (24) on the electricity network which may result in pole-slip of the machine (10), deriving a representation of power transfer (P) relating to the machine against the power transfer angle (?) utilizing data relating to a value of a current or a voltage measured on a terminal (26) of the machine before the fault has occurred and computed data relating to an expected future value of a current or voltage on the terminal (26), after the fault has occurred. The method then utilizes the representation and a stability criterion to predict whether the machine (10) may become unstable and if instability is predicted, causes the machine (10) to be disconnected at 32 or 34 from the electricity network (12).
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: July 28, 2015
    Assignee: NORTH-WEST UNIVERSITY
    Inventors: Jan Abraham De Kock, Lafras Lamont
  • Patent number: 9088156
    Abstract: An electric switch is disclosed, in particular an electric circuit breaker. In at least one example embodiment, the switch includes a measuring channel for measuring an electric measured variable and is switched off when the result of a measurement reaches or exceeds a limit value. To test the mode of operation of the measuring channel, the electric measured variable is switched to a reference channel and a reference signal source is switched to the measuring channel and the reference result obtained via the measuring channel is compared with a reference setpoint. The switch is also tripped if, to test the mode of operation of the measuring channel, the electric measured variable is switched to the reference channel and the result obtained via the reference channel reaches or exceeds the limit value.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: July 21, 2015
    Assignee: Siemens Aktiengesellschaft
    Inventors: Andre Borgwardt, Thomas Driehorn, Peter Kopaczewski, Andreas Krauβ, Aron-Ernst Musiol, Gerd Müller
  • Patent number: 9077175
    Abstract: An electronic fuse circuit for interrupting a current flowing through a power circuit includes: a trip switch structured to open and close to interrupt and permit, respectively, the current flowing through the power circuit; a current sensing circuit structured to sense when a magnitude of the current flowing through the power circuit is greater than a predetermined magnitude; a trip circuit structured to control the trip switch to open and close based on the sensed magnitude of the current flowing through the power circuit; and a processor having a routine structured to monitor a characteristic of the trip circuit and, when the monitored characteristic meets a predetermined criteria, to enter an override mode and control the trip circuit to control the trip switch to open regardless of the magnitude of the current flowing through the power circuit.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: July 7, 2015
    Assignee: EATON CORPORATION
    Inventors: Nan Su, Jiankun Xin, Zhenbo Chen, Yibo Chen
  • Patent number: 9019674
    Abstract: In one general aspect, an apparatus can include an overvoltage protection portion, and an overcurrent protection portion operably coupled to the overvoltage protection portion such that heat produced by the overcurrent protection portion at a current below a rated current of the overcurrent protection portion causes the overvoltage protection portion to change from a voltage regulation state to a shorted state.
    Type: Grant
    Filed: December 31, 2010
    Date of Patent: April 28, 2015
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Adrian Mikolajczak
  • Publication number: 20150103456
    Abstract: Methods and systems for protecting DC circuits are provided. In an aspect, a method for controlling at least one protection circuit is disclosed. The method can monitor one or more parameters of the at least one protection circuit. One or more control signals can be selectively provided to a plurality of switches in the at least one protection circuit based on one or more parameters of the at least one protection circuit, in order to implement the appropriate protective topology based on one or more parameters of the at least one protection circuit. The method can be used to control a plurality of switches in the protection circuit and protect the DC circuit against short circuit, instabilities, and bus outages, and the like.
    Type: Application
    Filed: August 15, 2014
    Publication date: April 16, 2015
    Inventors: Ugo Ghisla, Roger Dougal, Igor Kondratiev
  • Patent number: 9007736
    Abstract: A power module includes a current sensing circuit in which a transistor includes an emitter connected to a sense emitter of a current sense element of an IGBT and a base connected to ground, a current sensing resistor including one end thereof connected to a collector of the transistor and the other end thereof connected to a common connection portion. The power module detects, as a current sensing voltage, a potential difference generated by the current sensing resistor based on the common connection portion as a reference, compares the current sensing voltage with a predetermined threshold voltage, and determines whether or not an overcurrent flows through the IGBT according to a magnitude relation therebetween.
    Type: Grant
    Filed: October 6, 2011
    Date of Patent: April 14, 2015
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shiori Uota, Takahiro Inoue, Koji Tamaki, Shoichi Orita
  • Publication number: 20150070801
    Abstract: A two-pole circuit breaker is provided that includes a first mechanical pole, a second mechanical pole and an electronic pole. The first mechanical pole includes a first armature having a first armature extension, and the second mechanical pole includes a second armature having a second armature extension. The electronic pole includes a first solenoid and a second solenoid, the first armature extension is disposed adjacent the first solenoid, and the second armature is disposed adjacent the second solenoid. Numerous other aspects are provided.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 12, 2015
    Applicant: Siemens Industry, Inc.
    Inventors: Joselito Endozo, Russell Thomas Watford
  • Publication number: 20150055260
    Abstract: A fault current limiter circuit including a fast switch fault current limiter (FSFCL) and a voltage control reactor (VCR) operative to conduct load current during a steady state operation and limit load current when the load current exceeds fault current limits. The FSFCL may include a breaker having electrical contacts, a coil electrically coupled to the electrical breaker contacts, a plunger mechanically coupled to the electrical breaker contacts, a parallel voltage control (VCR), a transient overvoltage control circuit (TOCC), wherein when current greater than a threshold level flows through the coil, a magnetic field having strength to move the plunger is generated, the movement of the plunger operates to open the contacts in the breaker and transfer fault current to VCR and TOCC and limit the overall system fault current.
    Type: Application
    Filed: August 18, 2014
    Publication date: February 26, 2015
    Inventors: Kasegn D. Tekletsadik, Charles L. Stanley
  • Patent number: 8964338
    Abstract: A system includes a refrigerant compressor including an electric motor, a current sensor that measures current flow to the electric motor, a switching device configured to close and open to allow and prevent current flow to the electric motor, respectively, a maximum continuous current (MCC) device that includes a resistance corresponding to a maximum continuous current for the electric motor, and a motor protection module. The motor protection module communicates with the MCC device, the current sensor, and the switching device and determines a first MCC value for the electric motor as a function of the resistance of the MCC device. The motor protection module also selectively sets a predetermined MCC to the first MCC and controls the switching device based on a comparison of the current flow to the electric motor and the predetermined MCC.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: February 24, 2015
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Frank S. Wallis, Joseph James Rozsnaki
  • Publication number: 20150009597
    Abstract: An electronic fuse circuit for interrupting a current flowing through a power circuit includes: a trip switch structured to open and close to interrupt and permit, respectively, the current flowing through the power circuit; a current sensing circuit structured to sense when a magnitude of the current flowing through the power circuit is greater than a predetermined magnitude; a trip circuit structured to control the trip switch to open and close based on the sensed magnitude of the current flowing through the power circuit; and a processor having a routine structured to monitor a characteristic of the trip circuit and, when the monitored characteristic meets a predetermined criteria, to enter an override mode and control the trip circuit to control the trip switch to open regardless of the magnitude of the current flowing through the power circuit.
    Type: Application
    Filed: July 8, 2013
    Publication date: January 8, 2015
    Applicant: Eaton Corporation
    Inventors: NAN SU, Jiankun Xin, Zhenbo Chen, Yibo Chen
  • Publication number: 20140321014
    Abstract: An apparatus includes a power supply configured to supply power and a first electrical circuit breaker electrically coupled to the power supply. The apparatus includes a first electrical circuit electrically coupled to receive power from the power supply through the first electrical circuit breaker. The apparatus includes a second electrical circuit breaker electrically coupled to the power supply and a second electrical circuit. During operation of the apparatus, in response to detection that at least one of the current and the voltage of the power has exceeded the operating threshold for the first electrical circuit, the power supply and the first electrical circuit breaker are configured to power off, wherein the shutting off of the power supply prevents supplying the power from the power supply to the second electrical circuit breaker that is electrically coupled to the second electrical circuit to receive the power from the power supply.
    Type: Application
    Filed: April 24, 2014
    Publication date: October 30, 2014
    Applicant: International Business Machines Corporation
    Inventors: Wei Tien Chen, George Cheng, Yulianti Darmanto, Peter CY Huang, JunHom Lin, WJ Tseng
  • Patent number: 8861156
    Abstract: A method, system, and/or apparatus is described for controllably providing operating power to, and indicating proper operating status of, a load. Novel functionality can be provided via discrete electronic components or components can be integrated into a unified enclosure as a starter apparatus. Operation can be based, at least in part, on an operating mode selected via a user interface. An electronic overload relay or overload circuit interconnected with a control board assembly and a contactor relay can sense one or more aspects of the operating power supplied to the load and the control board assembly can operate one or more relays to indicate operating status of the load and control the load in response to various manual or remote automation system inputs.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: October 14, 2014
    Inventors: Kent Jeffrey Holce, Andre Pierre Perra, Roger Steven Cota
  • Patent number: 8861164
    Abstract: In one general aspect, an apparatus can include an overcurrent protection device. The apparatus can include an overvoltage protection device coupled to the overcurrent protection device and configured to cause the overcurrent protection device to decrease a current through the overvoltage protection device after a breakdown voltage of the overvoltage protection device increases in response to heat.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: October 14, 2014
    Assignee: Fairchild Semiconductor Corporation
    Inventor: Adrian Mikolajczak
  • Patent number: 8854780
    Abstract: A programmable protection circuit of a battery pack and a battery back are disclosed. The protection circuit includes programmable protection level specifications based on battery characteristics by incorporating a storage unit therein. Accordingly, the protection circuit can be use with various batteries in various battery packs, thereby saving design and manufacturing costs.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: October 7, 2014
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Yeonri Jung, Sejin Ji
  • Patent number: 8854781
    Abstract: A power supply device for plasma processing, wherein electric arcs may occur, comprises a power supply circuit for generating a voltage across output terminals, and a first switch connected between the power supply circuit and one of the output terminals. According to a first aspect the power supply device comprises a recovery energy circuit connected to the output terminals and to the power supply circuit. According to a second aspect the power supply device comprises an inductance circuit including an inductor and a second switch connected parallel to the inductor. According to a third aspect the power supply device comprises a controller for causing the power supply circuit and the first switch to be switched on and off. The controller is configured to determine a quenching time interval by means of a self-adaptive process. The quenching time interval defines the time interval during which, in an event of an arc, no voltage is generated across the output terminals.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: October 7, 2014
    Assignee: Solvix GmbH
    Inventors: Albert Bulliard, Benoit Fragniere, Joel Oehen
  • 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
  • Patent number: 8848327
    Abstract: Disclosed is a controller for controlling short-circuit across positive and negative terminals of a dye sensitized solar cell for converting a light energy into an electrical energy. The controller includes: a voltage detecting section detecting a voltage developed across the positive and negative terminals of the cell; a current detecting section detecting a current caused to flow through the positive terminal of the cell; a judging section judging how a power generation state of the cell is, and whether or not a release state is provided across the positive and negative terminals of the cell in accordance with a value of the voltage detected by the voltage detecting section and a value of the current detected by the current detecting section; and a short-circuiting/releasing section short-circuiting or releasing across the positive and negative terminals of the cell in accordance with a result of the judgment made by the judging section.
    Type: Grant
    Filed: June 16, 2011
    Date of Patent: September 30, 2014
    Assignee: Sony Corporation
    Inventors: Atsushi Sato, Yoshiaki Inoue, Mikio Takenaka
  • Publication number: 20140268454
    Abstract: A power interruption circuit for use in a power distribution module is provided. The power interruption circuit is configured to provide power to a load and includes a shunt resistor, a plurality of switches, and microprocessor. The microprocessor is configured to determine a digitized value of a current flowing through the shunt resistor, determine a digitized value of an output voltage of the power interruption circuit, calculate, from the digitized current value and the digitized output voltage value, a power provided by the power interruption circuit to the load, compare the calculated power to a threshold power level, and control the plurality of switches based on the comparison.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Gary Jay Turner, Darwin Drake Smith, Tab O. Walter
  • Patent number: 8837100
    Abstract: A power supply device for plasma processing, wherein electric arcs may occur, comprises a power supply circuit for generating a voltage across output terminals, and a first switch connected between the power supply circuit and one of the output terminals. According to a first aspect the power supply device comprises a recovery energy circuit connected to the output terminals and to the power supply circuit. According to a second aspect the power supply device comprises an inductance circuit including an inductor and a second switch connected parallel to the inductor. According to a third aspect the power supply device comprises a controller for causing the power supply circuit and the first switch to be switched on and off. The controller is configured to determine a quenching time interval by means of a self-adaptive process. The quenching time interval defines the time interval during which, in an event of an arc, no voltage is generated across the output terminals.
    Type: Grant
    Filed: March 18, 2013
    Date of Patent: September 16, 2014
    Assignee: Solvix GmbH
    Inventors: Albert Bulliard, Benoit Fragniere, Joel Oehen, Olivier Cardou
  • Publication number: 20140254054
    Abstract: A power supply device for plasma processing, wherein electric arcs may occur, comprises a power supply circuit for generating a voltage across output terminals, and a first switch connected between the power supply circuit and one of the output terminals. According to a first aspect the power supply device comprises a recovery energy circuit connected to the output terminals and to the power supply circuit. According to a second aspect the power supply device comprises an inductance circuit including an inductor and a second switch connected parallel to the inductor. According to a third aspect the power supply device comprises a controller for causing the power supply circuit and the first switch to be switched on and off. The controller is configured to determine a quenching time interval by means of a self-adaptive process. The quenching time interval defines the time interval during which, in an event of an arc, no voltage is generated across the output terminals.
    Type: Application
    Filed: May 22, 2014
    Publication date: September 11, 2014
    Inventors: Albert BULLIARD, Benoit FRAGNIERE, Joel OEHEN
  • Patent number: 8823356
    Abstract: Processes, machines, and articles of manufacture that may serve to enable the detection or determination of alternating line voltages from an alternating power source, such as the power grid, are provided. This automatic sensing may be useful when connections are made to the power grid, such that when connections are made, the connections may be configured to be compatible with the available power source. This automatic sensing may also be useful if power sources change characteristics over time or if devices may be connected to different power sources over time.
    Type: Grant
    Filed: March 21, 2011
    Date of Patent: September 2, 2014
    Assignee: SolarBridge Technologies, Inc.
    Inventor: Patrick L. Chapman
  • Patent number: 8797707
    Abstract: The disclosed technology describes methods and apparatus to convert and control power provided to a precipitator. An example embodiment of the disclosed technology includes a method for providing power to a device. The method includes receiving a first silicon controlled rectifier (SCR) signal and a second SCR signal from a controller device, generating a demand signal by the controller device based on a comparison of the first and second SCR signals, transmitting the demand signal to a power converter device, converting a first power signal from a first base frequency to a second power signal at a second base frequency, wherein the first base frequency is in the range of approximately 50 Hz to approximately 60 Hz and wherein the second base frequency is controlled in the range of approximately 100 Hz to approximately 1000 Hz, and switching the second power signal to the controller device.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: August 5, 2014
    Assignee: Redkoh Industries, Inc.
    Inventors: Paul Ford, John Jannone, Neil Flynn, Hank Del Gatto
  • Patent number: 8792220
    Abstract: A protection circuit includes a first input, an over-voltage protector, an over-current protector, and a first output connected in series in that order. The first input is configured for receiving a power source. The first output is configured for outputting a voltage of the power source to a load circuit. The over-voltage protector is configured to cut off an electrical connection between the first input and the first output under the condition that a voltage value of the power source is greater than a predetermined voltage value. The over-current protector is configured to cut off an electrical connection between the first input and the first output under the condition that a current value from the first output is greater than a predetermined current value.
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: July 29, 2014
    Assignees: Fu Tai Hua Industry (Shenzhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventor: Yin-Zhan Wang