Polarity, Phase Sequence Or Reverse Flow Patents (Class 307/127)
  • Patent number: 10396661
    Abstract: In a power supply control apparatus, when a semiconductor switch is switched ON, a charging circuit increases a base voltage. A first switch is ON if a differential voltage obtained by subtracting a gate voltage from a base voltage is at least a first reference voltage, and is OFF if the differential voltage is smaller than the first reference voltage. If the first switch is ON, a battery or a capacitor charges parasitic capacitors of the semiconductor switch.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: August 27, 2019
    Assignees: AutoNetworks Technologies, Ltd., Sumitomo Wiring Systems, Ltd., Sumitomo Electric Industries, Ltd.
    Inventors: Shunichi Sawano, Yuuki Sugisawa
  • Patent number: 10393809
    Abstract: One embodiment describes a tangible, non-transitory, computer-readable medium storing instructions executable by a processor in a control circuitry. The instructions include instructions to receive an instruction to make a switching device; determine, using the control circuitry, a voltage waveform of a power source; determine, using the control circuitry, a desired time to make the switching device based at least in part on the source voltage waveform; determine, using the control circuitry, an expected make time of the switching device; and determine, using the control circuitry, when to apply a pull-in current to make the switching device at the desired time based at least in part on the expected make time and the desired time to make.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: August 27, 2019
    Assignee: Rockwell Automation Technologies, Inc.
    Inventors: Christopher H. Bock, Christopher J. Wieloch, James J. Kinsella, Stefan T. Dziekonski
  • Patent number: 10396774
    Abstract: An intelligent power component module operable to be driven by a negative gate voltage integrates a wide bandgap semiconductor power unit, an adjustment unit and a driving unit so as to adjust a voltage level of the driving unit by the adjustment unit. Accordingly, the wide bandgap semiconductor power unit, in a driven state, comprises a driving voltage level alternating between a positive and a negative voltage.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: August 27, 2019
    Assignee: Hestia Power Inc.
    Inventors: Chien-Chung Hung, Fu-Jen Hsu, Cheng-Tyng Yen, Chwan-Ying Lee
  • Patent number: 10312812
    Abstract: A wide-range positive-negative adjustable high-voltage DC power supply includes the following components: a high-voltage generator, a negative high-voltage terminal, and a positive high-voltage terminal; a first driving circuit, a first voltage regulating unit, a current detection and amplification circuit, a second driving circuit and a second voltage regulating unit that are connected in turn; and an adjustable high-voltage output terminal; as well as an instruction input terminal, an instruction voltage circuit and an error amplifier that are connected in turn, and a voltage feedback circuit.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: June 4, 2019
    Assignee: Huizhou Sanhua Industrial Co., Ltd.
    Inventors: Jianming Li, Zheng Liu, Jianping Sun, Chengshun Zhang
  • Patent number: 10312820
    Abstract: A polarity-selectable high voltage direct current power supply including a first drive assembly that transforms a first low voltage DC input into a first medium voltage alternating current output; a first HV output assembly that transforms the first LV AC output into a first HV DC output, wherein the first HV output assembly defines a first input stage; a polarity selector coupled between the second output junction of the first drive assembly and the first and second input stages of the first HV output assembly, the polarity selector operable between a first configuration and a second configuration; wherein in the first configuration the first HV DC output has a positive polarity; and wherein in the second configuration the first HV DC output has a negative polarity.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: June 4, 2019
    Assignee: Accion Systems, Inc.
    Inventor: Paul E. Fogel
  • Patent number: 10298220
    Abstract: A switching element drive circuit that drives a main switching element by providing a control terminal of the main switching element with a drive signal that has asymmetric positive and negative potentials with respect to a reference potential, the main switching element including a ground terminal, which is a source terminal or an emitter terminal, and to which the reference potential is connected.
    Type: Grant
    Filed: December 10, 2015
    Date of Patent: May 21, 2019
    Assignee: AISIN AW CO., LTD.
    Inventors: Yasushi Nakamura, Yuji Takakura
  • Patent number: 10291041
    Abstract: A power supply system has a lithium battery. The system includes an uninterruptible power supply (UPS) connected between a commercial power source and a device of a first type. A lithium battery is connected to the uninterruptible power supply. A voltage drop protector (VDP) is connected to the lithium battery and connected between the commercial power source and a device of a second type. Tolerable error thresholds for a voltage and frequency required for the device of the first type are smaller than tolerable error thresholds for voltage and frequency required for the device of the second type.
    Type: Grant
    Filed: September 29, 2016
    Date of Patent: May 14, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Byoungchul Ko, Sungki Seo, Yongmun Yoon, Kyutae Kim
  • Patent number: 10272785
    Abstract: A vehicle powertrain includes a variable voltage converter, a bypass diode and a controller. The bypass diode may be coupled in parallel with the converter and configured to clamp an output of the converter to a battery voltage. The controller may be configured to, while in a boost mode and in response to a rate of change of a converter inductor current exceeding a boost threshold, open switches of the converter to divert propulsive energy through the bypass diode. The controller may also be configured to, while in buck mode and in response to a magnitude of a converter inductor current exceeding a buck threshold, open switches of the converter to divert regenerative energy through the bypass diode, while reversed biased, to the battery.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: April 30, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Mohammed Khorshed Alam, Yan Zhou, Shuitao Yang, Fan Xu, Lihua Chen
  • Patent number: 10267823
    Abstract: A digital clamp meter includes a common input, a voltage/resistance input, a current transformer, a voltage/resistance measuring circuit, an AC measuring circuit, a MPU and a displayer. A detecting input of the voltage/resistance measuring circuit is connected to the voltage/resistance input, a detecting output of the voltage/resistance measuring circuit is connected to a signal input of the MPU, and a controlled terminal of the voltage/resistance measuring circuit is connected to a controlling output of the MPU. The signal output of the MPU is connected to the displayer. The common input is grounded. A detecting input of the AC measuring circuit is connected to a secondary winding of the current transformer, a detecting output of the AC measuring circuit is connected to the signal input of the MPU, and a controlled terminal of the AC measuring circuit is connected to the controlling output of the MPU.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: April 23, 2019
    Assignee: Shenzhen New Huayi Instrument Co., Ltd.
    Inventors: Chao Gao, Chenglong Wang
  • Patent number: 10256649
    Abstract: A jump-starting arrangement is provided for a motor vehicle, wherein the motor vehicle has an engine control unit and a starter for an internal-combustion engine. The motor vehicle is equipped with at least two partial onboard power systems, which are mutually coupled by way of at least one electric separator element. Each partial onboard power system, respectively, is equipped with at least one rechargeable electric energy accumulator. The two partial onboard power systems each have a jump-starting base, and the respective jump-starting bases are galvanically separated from one another.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: April 9, 2019
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Hartmut Proebstle, Holger Witt
  • Patent number: 10199828
    Abstract: Systems and methods are provided for a three-phase compensation system, whereby an electric circuit is configured to be connected with three input phases of a power source and to supply three respective output phases, said electric circuit further configured to compensate for one or two malfunctioning input phases of said three input phases by supplying current from a functioning input phase of said three input phases to replace a malfunctioning input phase.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: February 5, 2019
    Inventor: Oren Tamir
  • Patent number: 10186391
    Abstract: A circuit breaking system includes an output device for outputting an output signal; a control device controlled by the output signal; a power input terminal provided in the output device, for supplying power to the control device; a power supply to the output device, which has a ground terminal; a break circuit disposed between a power output terminal and the power input terminal; a switching circuit disposed between the break circuit and the power output terminal; and a short circuit disposed between a ground and a node which connects the power input terminal and the break circuit. The break circuit and the short circuit are operated so as to not be closed at the same time. When the switching circuit is closed, the break circuit is closed while the short circuit is open. When the switching circuit is open, the break circuit is open while the short circuit is closed.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: January 22, 2019
    Assignee: FANUC CORPORATION
    Inventors: Yoshikiyo Tanabe, Masaru Kino, Yoshiki Hashimoto
  • Patent number: 10170930
    Abstract: An electrical power restoration system for a circuit assembly having a circuit breaker, an electrical load and a circuit conditioner (e.g., a UPS) includes a circuit controller that is positioned along the circuit assembly between the circuit breaker and the electrical load. The circuit controller is electrically connected to the circuit conditioner, and controls activation and/or deactivation of the circuit conditioner. The circuit conditioner is positioned along the circuit assembly between the circuit controller and the electrical load and provides alternative AC power to the electrical load as determined by the circuit controller. The electrical power restoration assembly includes a first hot conductor and a second hot conductor. The first hot conductor conducts AC power from the circuit breaker to the circuit controller. The second hot conductor conducts AC power or alternative AC power from the circuit controller to the electrical load as determined by the circuit controller.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: January 1, 2019
    Assignee: Runway Energy, LLC
    Inventor: Mark D. Schey
  • Patent number: 10110321
    Abstract: In general, a branching configuration used in a wavelength division multiplexed (WDM) optical communication system, consistent with the present disclosure, includes a power feed branching unit (PFBU) having a multi-port DC/DC converter (DDCM) arrangement capable of a plurality of operating modes to distribute power in a bi-directional manner. The DDCM arrangement may include a plurality of ports for electrically coupling to one or more trunk path cable segments and for electrically coupling to a branch cable segment. A plurality of PFBUs may be disposed along a trunk path, with each PFBU powering an associated branch path, without each branch path necessarily having local power feed equipment (PFE). In instances where a branch path includes a local PFE, an associated PFBU may draw power from the branch path in order to make power available to the trunk path as needed.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: October 23, 2018
    Assignee: TYCO ELECTRONICS SUBSEA COMMUNICATIONS LLC
    Inventors: Edwin Muth, Stanley Wisniewski, II, Leonard J. Taylor, Arthur A. Baumgarten
  • Patent number: 10075087
    Abstract: An alternating current power supply configured to provide a high-voltage alternating current power output from two low-voltage alternating current power sources is provided. The alternating current power supply comprises a first alternating current power input, a second alternating current power input, and an alternating current power output having a first output conductor and a second output conductor. The alternating current power supply includes a first switch means for coupling the first alternating current input to the first output connector and the second alternating current input to the second output connector. The first switch means is sequentially responsive to the first current flow followed by the second current flow. The alternating current power supply further comprises an isolation means connected between the first switch means and the alternating current power output, wherein the isolation means is configured to isolate the first current flow from the second current flow.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: September 11, 2018
    Inventor: Duane Warren Hoole
  • Patent number: 9979336
    Abstract: A generator system includes an AC machine including a plurality of armature coils and a rectifier circuit electrically coupled to the armature coils. The rectifier circuit includes a plurality of switches. The generator system additionally includes a sensor device electrically coupled to a control circuit. The sensor device is configured to determine a rotor position of the AC machine. The control circuit determines a desired phase angle between a phase current and an induced voltage of the AC machine and provides a control signal to the rectifier circuit to switch the switches on and off to convert an AC signal to a DC signal and to control the rotor position of the AC machine to achieve the desired phase angle.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: May 22, 2018
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Chandra S. Namuduri, Suresh Gopalakrishnan
  • Patent number: 9972761
    Abstract: A thermoelectric energy harvesting system for charging an energy store from ambient thermal energy includes a thermoelectric energy generator (TEG), an automatic polarity monitor, and switching matrix. The polarity monitor detects when the polarity of an input voltage in the system is reversed relative to a standard voltage polarity, and causes the switching matrix to switch the inputs from the thermoelectric energy harvester.
    Type: Grant
    Filed: March 30, 2015
    Date of Patent: May 15, 2018
    Assignee: KHALIFA UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Mohammad Radwan Alhawari, Baker Mohammad, Hani Hasan Mustafa Saleh, Mohammed Ismail Elnaggar
  • Patent number: 9787099
    Abstract: A set of generators are connected in parallel using an electrical bus. One of the generators includes selectively connected inputs including a first input associated with a generator and a second input associated with the bus. A controller is configured to receive a first electrical characteristic from the first input assigned to a first connection and a second electrical characteristic from the second input assigned to a second connection. The controller is configured to generate a switching signal to assign the first input to the second connection or assign the second input to the first connection in response to a difference between the first electrical characteristic and the second electrical characteristic exceeding a threshold.
    Type: Grant
    Filed: September 12, 2013
    Date of Patent: October 10, 2017
    Assignee: Kohler, Co.
    Inventor: Isaac S. Frampton
  • Patent number: 9768611
    Abstract: An apparatus for providing protection to an electric circuit includes a P-channel MOSFET; a freewheeling diode coupled to a drain of the P-channel MOSFET and coupled to a load; and a charge pump coupled to a gate of the P-channel MOSEFT. In a normal operating mode, the charge pump receives a voltage from a voltage regulator, and is configured to multiply and reverses the polarity of the voltage to supply to the gate of the MOSFET. In a reverse battery operating mode, the charge pump receives no voltage from the voltage regulator to supply to the gate of the MOSFET causing the MOSFET to deactivate such that when the MOSFET deactivates, current is prevented from flowing through the freewheeling diode to protect the freewheeling diode.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: September 19, 2017
    Assignee: Continental Automotive Systems, Inc.
    Inventors: Luis Roberto Togo Peraza, Lothar Erle
  • Patent number: 9760044
    Abstract: An image forming apparatus includes a phase controller for controlling input power applied to a heating body through phase control. The image forming apparatus includes a fuser having the heating body, a switching unit supplying the input power to the heating body, and a phase controller determining an input phase of the input power based on a temperature of the fuser, in which the phase controller further controls the switching unit to vary a phase of the input power supplied to the heating body within a phase range set based on the input phase, for each control cycle of the input power.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: September 12, 2017
    Assignee: S-PRINTING SOLUTION CO., LTD.
    Inventors: Young-jun Song, Sung-hoon Lim
  • Patent number: 9647550
    Abstract: A negative voltage signal generation circuit is described. The first thin film transistor (TFT) connects the first ground terminal to the control signal generation unit. The second TFT switch connects to the first TFT switch, the control signal generation unit and the negative voltage signal output terminal. The first capacitor connects to the first TFT switch, the second TFT switch and the control signal generation unit. The present invention is capable of improving the stability of the negative voltage signal generation circuit.
    Type: Grant
    Filed: May 25, 2015
    Date of Patent: May 9, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Hua Zhang, Dan Cao
  • Patent number: 9559625
    Abstract: A solid state relay for controlling a three-phase AC motor running direction is provided, a driver module, power components module, phase sequence detection module, phase lack detection module, and automatic phase correction and phase lack protection logic module. The input of the phase sequence detection module is connected to the three-phase power supply, and the output is connected to the automatic phase correction and phase lack protection logic module, to provide phase sequence detection and a phase sequence signal to the automatic phase correction and phase lack protection logic module. The input of the phase lack detection module is connected to the three-phase power supply, and the output is connected to the automatic phase correction and phase lack protection logic module, to detect a lack of phase and provide the lacking phase signal to the automatic phase correction and phase lack protection logic module.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: January 31, 2017
    Assignee: KUDOM ELECTRONICS TECHNOLOGY (SHANGHAI) CO., LTD.
    Inventors: Jiantao Yang, Zhiming Zeng, Fangzeng Chen
  • Patent number: 9559681
    Abstract: A semiconductor integrated circuit device is configured such that if, due to an erroneous connection or the like, an abnormal state is entered in which an output voltage is lower than a ground potential VSS, an N-type DMOS transistor and a first P-type MOS transistor are turned off and a voltage is applied to their parasitic diodes in the opposite direction, preventing a current from flowing. In a normal state in which the output voltage is higher than the ground potential, at least one of the N-type DMOS transistor and first P-type MOS transistor, which are connected in parallel, is turned on, preventing a current from flowing into the parasitic diode of the N-type DMOS transistor.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: January 31, 2017
    Assignee: ALPS ELECTRIC CO., LTD.
    Inventors: Junichi Saito, Tomoyuki Sawataishi
  • Patent number: 9502846
    Abstract: Disclosed is a plug-in power adapter connectable into a screwing portion of a conventional lamp holder by a screwing connection, and power is supplied to the power adapter, and the power adapter is provided for connecting a power cable of an electric appliance to supply power to the electric appliance. When two bare ends of the power cable are connected to the power adapter and clamped by two wire clipping ends respectively to prevent the power cable from falling out easily, so as to achieve the effects of connecting the power cable securely and preventing the cable from being loosened or separated by external forces.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: November 22, 2016
    Assignee: Rich Brand Industries Limited
    Inventor: Te-Shui Peng
  • Patent number: 9490556
    Abstract: The present invention relates to a cell contacting arrangement for an energy storage module having a plurality of electrochemical storage cells, each storage cell having at least two electric connection terminals, the arrangement comprising: a carrier plate which is mountable on the energy storage module, and at least one cell connector inserted into the carrier plate for connecting at least two of the connection terminals of different storage cells, the carrier plate comprising at least one catch spring having a detent for fixing the cell connector in the carrier plate.
    Type: Grant
    Filed: November 23, 2012
    Date of Patent: November 8, 2016
    Assignees: Bayerische Motoren Werke Aktiengesellschaft, Diehl Metal Applications GMBH
    Inventors: Hubertus Goesmann, Christoph Born, Harald Heck, Frank Warmuth
  • Patent number: 9379605
    Abstract: A charge pump includes a voltage multiplier core and a clocking circuit. The voltage multiplier core includes first and second cross-coupled CMOS devices, first and second output CMOS devices, a first capacitive node coupled between the first cross-coupled CMOS device and the first output CMOS device, and a second capacitive node coupled between the second cross-couple CMOS device and the second output CMOS device. The clocking circuit configured to control the first and second output CMOS devices to inhibit a drop in respective output voltages there from, while simultaneously controlling the first and second cross-coupled CMOS device and input voltages applied to the first and second capacitive nodes to minimize leakage from the first and second capacitive nodes.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: June 28, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Alex Sulkin
  • Patent number: 9369062
    Abstract: A method for converting DC power from a source into AC power by means of an inverter which includes three bridge branches, each having a phase output, is described. During grid-connected operation, the bridge branches are actuated in such a way that the AC power is fed, as three-phase grid-compliant power, into a grid. During emergency operation of the inverter, the AC power is provided as single-phase island grid by two of the three bridge branches at the phase outputs thereof, wherein the inverter is disconnected from the grid.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 14, 2016
    Assignee: SMA SOLAR TECHNOLOGY AG
    Inventors: Volker Wachenfeld, Claus Allert, Christian Gehrke, Tobias Mueller, Pablo Ignacio Correa Vasquez, Florian Steiper
  • Patent number: 9172310
    Abstract: A generator, for example a three-phase generator including an associated rectifier system, is used, for example for the electrical voltage supply of a motor vehicle. The AC voltage produced by the generator is rectified by the rectifier system having a plurality of rectifying elements 2, 7. Rectifying elements 2 of the rectifier have a plurality of series connections of a self-conducting n-channel JFET and a self-conducting p-channel JFET, the gate terminals being connected to the outer source or drain terminals of the other transistor. Alternatively, the self-conducting JFETS of the rectifying element 2 in FIG. 1 may be replaced by self-conducting MOS field effect transistors (depletion mode MOSFET). The p-channel JFET of the exemplary embodiment according to FIG. 1 is replaced by a self-conducting p-channel MOSFET and the n-channel JFET is replaced by a self-conducting n-channel MOSFET. Furthermore, the gate terminals are connected to the diametrically opposed outer terminals.
    Type: Grant
    Filed: December 8, 2008
    Date of Patent: October 27, 2015
    Assignee: ROBERT BOSCH GMBH
    Inventors: Alfred Goerlach, Markus Baur
  • Patent number: 9140463
    Abstract: An indoor unit performs a control operation to not supply power to a load device through a power/communication line simultaneously with other indoor units. An air conditioning system may includes an indoor unit including a microcomputer to output a power application signal to supply power to a load device through a power/communication line, and a duplicate power application prevention unit to interrupt the power application signal from the microcomputer when the power is simultaneously applied to the power/communication line by a different indoor unit, to prevent the power from being duplicately applied to the power/communication line.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: September 22, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Su Ho Jo, Kwan Joo Myoung, Awata Hiroshi, O Do Ryu
  • Patent number: 9077190
    Abstract: A switching circuit controls the flow of current between its input and output in accordance with the state of a control signal applied to the circuit. When the control signal is in a first state and the voltage applied to the input is higher than the voltage at the output, the circuit provides a low resistance path between its input and output terminals thereby enabling current to flow from the input to the output. When the control signal is in the first state and the voltage at the output is higher than the voltage at the input, the circuit inhibits current flow from the output to the input. When the control signal is in a second state, the circuit is turned off thus inhibiting current flow between the input and the output.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: July 7, 2015
    Assignee: Decicon, Inc.
    Inventor: Baris Posat
  • Publication number: 20150069858
    Abstract: A set of generators are connected in parallel using an electrical bus. One of the generators includes selectively connected inputs including a first input associated with a generator and a second input associated with the bus. A controller is configured to receive a first electrical characteristic from the first input assigned to a first connection and a second electrical characteristic from the second input assigned to a second connection. The controller is configured to generate a switching signal to assign the first input to the second connection or assign the second input to the first connection in response to a difference between the first electrical characteristic and the second electrical characteristic exceeding a threshold.
    Type: Application
    Filed: September 12, 2013
    Publication date: March 12, 2015
    Applicant: Kohler Co.
    Inventor: Isaac S. Frampton
  • Publication number: 20140306527
    Abstract: A method and device for a provision of control power for a power supply network in which control power is provided, wherein an energy producer and an energy consumer are jointly operated, wherein the power which the energy consumer removes from the power supply network is restricted to provide a positive control power, and the power which the energy producer feeds into the power supply network is restricted to provide a negative control power.
    Type: Application
    Filed: October 26, 2012
    Publication date: October 16, 2014
    Applicants: Evonik Industries AG, Evonik Degussa GmbH, STEAG Power Saar GmbH
    Inventors: Georg Markowz, Wolfgang Schweissthal, Carsten Kolligs, Anna Flemming, Dennis Gamrad, Sebastien Cochet
  • Patent number: 8860248
    Abstract: A demand response unit (DRU) interposed between a utility's electrical power line (PL) and at least one load (L1-Ln) to which power is supplied by the utility over the line. A detector (Fdet or Vdet) measures a characteristic (frequency F, voltage V) of an electrical waveform (W) by which power is transmitted by the utility to the load. The detector determines both when the measured frequency or voltage exceeds a predetermined threshold for a first predetermined period of time; and, if the threshold is exceeded, when the frequency or voltage exceeds the second predetermined threshold for a second predetermined period of time. For this purpose, the detector processes a predetermined number of intervals of the waveform and produces an average value of the characteristic which is compared to the threshold. This is done to reduce the effect of extraneous events which may temporarily change the value of the frequency or voltage.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: October 14, 2014
    Assignee: Aclara Technologies LLC
    Inventor: Christopher K. Fleck
  • 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: 8779634
    Abstract: A target closing phase determining circuit determines energization flux errors in respective phases and respective closing phases of a first phase, and determines a target closing phase of the first phase so as to minimize an evaluated value related to determined energization flux errors in the respective phases. Each of the energization flux errors is the maximum value of absolute values of center values of transformer fluxes generated in a static state after energization. The target closing phase determining circuit determines the energization flux errors based on residual flux values for the first to third phases of a three-phase power supply, respectively, a pre-arc characteristic and a closing time variation characteristic of a three-phase circuit breaker, a connection condition of windings of a three-phase transformer, to which the three-phase circuit breaker is connected, and voltage phase differences among the phases of the three-phase power supply.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: July 15, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroyuki Tsutada, Takashi Hirai
  • Patent number: 8754597
    Abstract: A switchgear includes a power supply built into a common housing, and at least two drives. The power supply can be fed by an external supply voltage and an external consumer can be connected to the two drives. In at least one embodiment, the switchgear includes, in the same housing, a built-in overload detection for the two drives and/or a built-in circuit breaker function for the two drives, and/or a built-in control circuit for the common control of the two drives. The switchgear can optionally be completed by a transformer providing an additional function of the targeted charging of a buffer capacitor and/or by an energy accumulator providing an additional function of the targeted discharge thereof by temporarily switching on a connected consumer.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: June 17, 2014
    Assignee: Siemens Aktiengesellschaft
    Inventors: Josef Graf, Norbert Mitlmeier, Ludwig Niebler, Bernhard Streich
  • Patent number: 8736204
    Abstract: Apparatus for transferring power between an electricity network (UP) operating on alternating-current electricity and a multiphase electric machine (M2, M3), which apparatus comprises low-voltage power cells (CS, C11 . . . CN6) operating on a cascade principle, which power cells comprise a single-phase output connector (OUT), and at least one transformer (TA, T1 . . . TN), comprising for each power cell connected to it a single-phase or multiphase winding dedicated to the specific power cell, which transformer comprises at least one additional winding (WA, WB1 . . . WBN) connected to the same magnetic circuit as the other windings for the purpose of at least one auxiliary circuit, which can be connected to the aforementioned additional winding.
    Type: Grant
    Filed: January 3, 2012
    Date of Patent: May 27, 2014
    Assignee: Vacon Oyj
    Inventors: Nicklas Södö, Risto Komulainen
  • Patent number: 8710704
    Abstract: A performance venue having a dynamic load management system for use in managing loads. The system uses a dead man circuit as a means for determining the actual or anticipated dynamic load produced by moving loads, and then disables the system by opening the dead man circuit when too many loads are moved or selected to be moved. Preferably, the invention is embodied in a dead man circuit is pure hardware, and is free of software components. The invention also provides a method of controlling movement of loads in a performance venue having a plurality machines. In its basic form, the method comprises selecting at least one of the machines for movement, closing a dead man circuit, and opening the dead man circuit if the current in the dead man circuit falls outside a predetermined range.
    Type: Grant
    Filed: May 3, 2010
    Date of Patent: April 29, 2014
    Assignee: Electronic Theatre Controls, Inc.
    Inventors: Michael Lichter, Timothy P. Nolan, Larry J. Gauthier
  • Patent number: 8713363
    Abstract: The invention provides a power supply system for a data storage system, the power supply system comprising: a first power supply unit for supplying power to the storage system; a second power supply unit independent from the first power supply unit for supplying power to the storage system; an auxiliary power supply; a power redundancy controller, arranged to monitor the region of an efficiency curve within which the first and/or second power supplies are operating in and control the first and second power supplies accordingly such that the either or both of the first and second power supplies are providing power at any one time, wherein in the event of failure of a power supply unit when only one of the power supply units is operating, the power redundancy controller is arranged to provide power supply to the data storage system from the auxiliary power supply.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: April 29, 2014
    Assignee: Xyratex Technology Limited
    Inventor: Tim Williams
  • Publication number: 20140091642
    Abstract: A device for controlling the polarity of a microphone of a portable terminal includes: a microphone that includes a current control element that is connected between a first polarity terminal and a second polarity terminal; first and second connection terminals that are connected to the first polarity terminal and the second polarity terminal of the microphone; a control unit that detects the level of at least one of the first and second connection terminals and determines whether the polarity of the microphone has been normally connected; a codec that is connected to a first polarity terminal and a second polarity terminal and codes audio signals; and a polarity adjusting unit that is connected between the first and second connection terminals and the first and second polarity terminals of the codec, and switches the outputs of the first and second connection terminals under the control of the control unit in the case of an abnormal connection, so as to be connected to the codec to align polarity.
    Type: Application
    Filed: August 31, 2012
    Publication date: April 3, 2014
    Inventor: Chang Ho Kim
  • Patent number: 8674631
    Abstract: A power conversion apparatus includes: a line breaker that is connected in series to a direct-current power supply; a first capacitor that is connected in parallel to the direct-current power supply through the line breaker; a discharge circuit that includes a resistor and a first switching circuit connected in series and is connected in parallel to the first capacitor; a power converter for driving a synchronous machine; a second capacitor that is connected in parallel to a direct-current side of the power converter; a second switching circuit that is connected in series between the first capacitor and the second capacitor; and a control circuit for controlling the discharge circuit. The control circuit controls the discharge circuit on the basis of the voltage of the first capacitor and the voltage of the second capacitor.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: March 18, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaki Kono, Keita Hatanaka
  • Patent number: 8675326
    Abstract: A bidirectional switch device, has: a bidirectional switch having a HEMT; and a control circuit which, during a first condition, applies a first voltage lower than a threshold voltage across a gate and one terminal among a source and a drain of the HEMT to turn off a first current path from the other terminal among the source and the drain to the one terminal, and during a second condition, applies a second voltage lower than the threshold voltage across the other terminal and the gate to turn off a second current path from the one terminal to the other terminal, and further during a third condition, applies a third voltage higher than the threshold voltage across the source and the gate and across the drain and the gate of the HEMT to turn on the first and second current paths.
    Type: Grant
    Filed: February 8, 2012
    Date of Patent: March 18, 2014
    Assignee: Fujitsu Semiconductor Limited
    Inventor: Ken Shono
  • Patent number: 8649146
    Abstract: A circuit protection device includes a trip mechanism and at least one capacitor configured to store electrical energy and to provide the electrical energy to the trip mechanism. The circuit protection device also includes a controller communicatively coupled to the at least one capacitor and configured to measure a charge property of the at least one capacitor, compare the measured charge property to a threshold, and output a signal indicative of the comparison.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: February 11, 2014
    Assignee: General Electric Company
    Inventor: Craig Benjamin Williams
  • Patent number: 8638534
    Abstract: A load driving device according to an exemplary aspect of the present invention includes: an output transistor coupled between a first power supply line and an output terminal; the output terminal being configured to be coupled with a load; a driver circuit that controls conduction/non-conduction of the output transistor; a compensation transistor that is coupled between the output terminal and a second power supply line, and becomes conductive when the driver circuit renders the output transistor non-conductive and when a potential of the second power supply line reaches a predetermined value or greater, to maintain a non-conduction state of the output transistor; and a first resistor coupled between the second power supply line and a back gate of the compensation transistor.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: January 28, 2014
    Assignee: Renesas Electronics Corporation
    Inventor: Akihiro Nakahara
  • Publication number: 20140001886
    Abstract: A system and method to perform automatic phase reversal detection are described. The system includes a first subsystem and a second subsystem configured to be synchronized with the first subsystem. A controller is configured to receive a first input from the first subsystem or the second subsystem and a second input from the first subsystem or the second subsystem and perform phase reversal detection based on the first input and the second input.
    Type: Application
    Filed: June 27, 2012
    Publication date: January 2, 2014
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: Shailender Singireddy, Sridhar Nedunsezian, Balakrishna Pamulaparthy
  • Patent number: 8605399
    Abstract: A load driving device according to an aspect of the present invention may includes an output transistor and a load connected in series between first and second power supply lines, a protection transistor connected between a gate of the output transistor and the second power supply line, the protection transistor turning on the output transistor when a polarity of a power supply connected between the first and second power supply lines is reversed, and a resistor arranged on a line, which supplies a voltage to a back gate of the protection transistor.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: December 10, 2013
    Assignee: Renesas Electronics Corporation
    Inventor: Akihiro Nakahara
  • Patent number: 8508078
    Abstract: A switching circuit controls the flow of current between its input and output in accordance with the state of a control signal applied to the circuit. When the control signal is in a first state and the voltage applied to the input is higher than the voltage at the output, the circuit provides a low resistance path between its input and output terminals thereby enabling current to flow from the input to the output. When the control signal is in the first state and the voltage at the output is higher than the voltage at the input, the circuit inhibits current flow from the output to the input. When the control signal is in a second state, the circuit is turned off thus inhibiting current flow between the input and the output.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 13, 2013
    Assignee: Decicon, Inc.
    Inventor: Baris Posat
  • Publication number: 20130163141
    Abstract: An input circuit includes an interface structured to output a logic signal from an alternating current signal of a pair of elongated conductors. A load is switchable to the elongated conductors. A processor outputs a control signal to switch the load to the elongated conductors asynchronously with respect to the alternating current signal for a first predetermined time, inputs the logic signal, determines if the input logic signal is active a plurality of times during the first predetermined time and responsively sets a first state of the alternating current signal, and, otherwise, sets an opposite second state of the alternating current signal, and delays for a second predetermined time, which is longer than the first predetermined time, for the opposite second state before repeating the output, and, otherwise, delays for a third predetermined time, which is longer than the second predetermined time, for the first state before repeating the output.
    Type: Application
    Filed: February 11, 2013
    Publication date: June 27, 2013
    Applicant: Eaton Corporation
    Inventor: Eaton Corporation
  • Patent number: 8471414
    Abstract: A low impedance polarity conversion circuit for driving a load with a DC power source is disclosed. The DC power source has a first pole from which a first DC signal originates and a second pole from which a second DC signal originates. The first DC signal has a voltage greater than a voltage of the second DC signal. The conversion circuit includes a circuit output node through which an output DC signal is delivered from the conversion circuit to the load. The conversion circuit also includes a charge conditioning circuit for generating third and fourth DC signals. The third DC signal has a voltage greater than the first DC signal voltage and the fourth DC signal has a voltage less than the second DC signal voltage. A rectification circuit includes first and second inputs for attachment to the first pole and the second pole. A Field-Effect Transistor (FET) bridge is electrically connected to the first and second inputs. The FET bridge includes first and second pairs of cooperating FETs.
    Type: Grant
    Filed: June 23, 2006
    Date of Patent: June 25, 2013
    Assignee: The Flewelling Ford Family Trust
    Inventors: Timothy D. F. Ford, Bernard Moffett
  • Publication number: 20130154393
    Abstract: A system for transmitting alternating current power and communication signals between a first location and a second location through a communication path which includes at least one inductive load and at least one switch configured to switch power to the at least one inductive load on and off is disclosed herein. The system comprises a control configured to control the at least one switch so that, if the power is switched on during a particular phase of the power, is the power is switched off during the opposite phase of the power, and if the power is switched off during a particular phase of the power, the power is switched on during the opposite phase of the power.
    Type: Application
    Filed: December 14, 2012
    Publication date: June 20, 2013
    Applicant: Vetco Gray Controls Limited
    Inventor: Vetco Gray Controls Limited