Static Switch Patents (Class 323/210)
  • Patent number: 10763023
    Abstract: Systems and implementations for inductance tuning systems that are configured to operate in a wide range of frequencies are provided herein. The subject matter described herein can in some embodiments include an inductance tuning system including at least one inductor connected to a first terminal, the at least one inductor comprising of a plurality of inductive elements that are substantially magnetically coupled to each other, wherein spacing between the inductive elements are substantially less than diameters of the windings. At least one capacitor can be connected between one or more of the plurality of inductive elements and a second terminal.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: September 1, 2020
    Assignee: WISPRY, INC.
    Inventor: Jorgen Bojer
  • Patent number: 10666146
    Abstract: In some examples, a device comprises a capacitor a bidirectional inverting buck-boost converter coupled to the capacitor and configured to couple to multiple loads and to a voltage source, wherein the bidirectional inverting buck-boost converter is configured to: compare a voltage across the capacitor with a reference voltage; and based on the comparison, facilitate converting a dissipation current flowing from one of the multiple loads into a recycling current.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 26, 2020
    Assignee: Texas Instruments Incorporated
    Inventors: Ingolf Edgar Frank, Lars Lotzenburger, Matthieu Etienne Chevrier
  • Patent number: 10630166
    Abstract: The disclosure discloses an absorption circuit which is coupled to a switching power supply, wherein the absorption circuit comprises: a switching power supply voltage spike suppression circuit for changing a voltage spike of the switching power supply into a desired voltage spike, an energy storage circuit which is coupled to the switching power supply voltage spike suppression circuit and used for storing the spike voltage that is suppressed, and a release circuit which is coupled to the energy storage circuit and used for, when the voltage stored by the energy storage circuit is higher than the output voltage of the switching power supply, releasing the energy which is stored by the energy storage circuit and higher than the output voltage to the output terminal of the switching power supply. The disclosure further discloses a corresponding switching power supply and a liquid crystal display driving circuit.
    Type: Grant
    Filed: April 14, 2017
    Date of Patent: April 21, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaofei Peng, Jiacheng Huang, Shengfei Ma
  • Patent number: 10580595
    Abstract: A method for operating an electrical switching device and an electrical switching device are disclosed. In order to ensure reliable operation of an electrical switching device having parallel switching paths allocated to a phase, which have lower switching capacity in comparison to conventional parallel switching paths, the zero current crossings in the phase are detected and at least one switching mechanism, operatively connected to the switching paths, is actuated so that all parallel switching paths allocated to the phase open within a window of time which is in the phase relative to the zero current crossings.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: March 3, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Karsten Freundt, Hartmut Kaletta, Andreas Malitz, Ulf Schuemann, Erik D. Taylor
  • Patent number: 10566904
    Abstract: Control circuits and methods to operate a switch of a DC-DC converter, including an output circuit to turn the switch off to control a peak inductor current in a given switching control cycle, and a modulation circuit to implement transition mode (TM) or continuous conduction mode (CCM) operation for a given switching control cycle by causing the output circuit to turn the switch on in response to an earlier one of a first signal, that represents an inductor current of the DC-DC converter, decreasing to a reference voltage that represents a zero crossing of the inductor current for the TM operation or the first signal decreasing to a valley reference signal that represents a non-zero value of the inductor current for the CCM operation.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: February 18, 2020
    Assignee: Texas Instruments Incorporated
    Inventor: Isaac Cohen
  • Patent number: 10530158
    Abstract: A control device for a static var compensator (SVC) includes: a monitoring control unit configured to generate an error presence/absence signal based on a control signal inputted from a system controller; a valve signal processing unit configured to generate a valve state signal based on databack signals respectively inputted from a plurality of valves; a CPU control unit configured to generate a state information signal based on the error presence/absence signal and the valve state signal; and a firing signal output control unit configured to generate a firing signal according to the state information signal.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: January 7, 2020
    Assignee: LSIS CO., LTD.
    Inventor: Seung Hun Lee
  • Patent number: 10505466
    Abstract: A dc link module for a power circuit comprising a first connector for connecting to a first power conversion circuit, a second connector for connecting to a second power conversion circuit, wherein the second power conversion circuit is connected to a load circuit arranged to at least intermittently operate as a power source to the power circuit, at least one dc link capacitors arranged between said first connector and said second connector for processing a voltage signal received at said first connector or said second connector, and at least one voltage compensation circuits arranged between said first connector and said second connector, said one or more voltage compensation circuits arranged to generate a voltage signal to compensate an ac ripple component in a dc voltage signal appearing across the at least one dc link capacitor.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: December 10, 2019
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Shu-Hung Henry Chung, Huai Wang
  • Patent number: 10455330
    Abstract: In various embodiments, a method for operating a sensor is provided. The method includes intermittently generating an operating current in the sensor, generating a reactive current in the sensor when the operating current is not generated, and not generating the reactive current when the operating current is generated. A value of the reactive current is the same or approximately the same as a value of the operating current.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: October 22, 2019
    Assignee: INFINEON TECHNOLOGIES AG
    Inventors: Benno Muehlbacher, Andreas Wiesbauer
  • Patent number: 10439508
    Abstract: A control device controls a switching converter having an input alternating supply voltage and a regulated direct voltage at the output terminal. The converter comprises a switch and the control device is adapted to control the on time period and the off time period of said switch for each cycle. The control device has a first input signal representative of the current flowing through at least one element of the converter and comprises a zero crossing detector adapted to detect at least one pair of first and second zero crossings of said first signal for each switching cycle, said second zero crossing immediately following the first zero crossing and occurring in opposite direction with respect to the first zero crossing. The control device comprises a synchronizer adapted to synchronize the start of the on period with each second zero crossing of said first signal.
    Type: Grant
    Filed: July 26, 2011
    Date of Patent: October 8, 2019
    Assignee: STMICROELECTRONICS S.r.l.
    Inventor: Claudio Adragna
  • Patent number: 10424435
    Abstract: An apparatus for reducing a magnetic unidirectional flux component in the core of a transformer with at least three legs, in particular a three-phase transformer having at least one compensation winding per transformer leg, wherein the compensation windings are magnetically coupled to the core of the transformer, where two compensation windings are provided per leg, the first compensation windings of a leg are each electrically connected together in a first delta connection, in each case the second compensation windings of a leg are each electrically connected together in a second delta connection, the compensation windings of at least one leg have different numbers of windings, and where at least one switching unit is arranged in series with the compensation windings for phase angle control.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: September 24, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Peter Hamberger
  • Patent number: 10330725
    Abstract: Systems, methods, and devices for monitoring one or more capacitor banks are presented herein. One concept of the present disclosure is directed to a method of monitoring at least one capacitor bank having a plurality of steps. The method includes: receiving measurements indicative of voltages and/or currents on electrical lines coupled to the steps of the capacitor bank by corresponding contactors; receiving information indicative of the respective statuses of the contactors; timestamping the measurements and contactor status information; storing the timestamped measurements with corresponding timestamped contactor status information; determining a rate of change of a parameter indicative of or derived from at least the measurements associated with at least one of the steps in the capacitor bank; comparing the determined rate of change with a baseline rate of change to produce a deviation; determining if the deviation satisfies a criterion; and, if so, indicating the deviation satisfied the criterion.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: June 25, 2019
    Assignee: SCHNEIDER ELECTRIC USA, INC.
    Inventors: David T. Tuckey, Jean-Marc Lupin
  • Patent number: 10145612
    Abstract: Flicker values to be expected may be determined and achieve a high probability from suitable state and operating variables which are acquired during the first minutes in the initial smelting phase. In this way, flicker can effectively be reduced and kept below predefined limiting values. This is in particular suitable during steel production using electric arc furnaces.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: December 4, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Arno Doebbeler, Ralf Engels, Thomas Matschullat, Wolfgang Meusel, Detlef Rieger
  • Patent number: 10088860
    Abstract: The present disclosure relates to a reactive power compensation system including a reactive power compensation unit for measuring compensate reactive power, an impedance measurement unit for measuring an impedance value of each of a plurality of loads, and a learning control unit for controlling the reactive power compensation unit based on the measured impedance value.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: October 2, 2018
    Assignee: LSIS CO., LTD.
    Inventor: Yong-Kil Choi
  • Patent number: 10056825
    Abstract: A control apparatus in a static VAR compensator (SVC) system includes a plurality of current supply units for supplying phase currents configuring three-phase current of a power system, a plurality of current sensors for measuring the phase currents, and a controller for determining whether unbalance occurs in the three-phase current based on the phase currents, calculating an error corresponding to the unbalance according to the phase currents if unbalance occurs, and individually controlling at least one of the plurality of current supply units so as to compensate for the error.
    Type: Grant
    Filed: January 21, 2017
    Date of Patent: August 21, 2018
    Assignee: LSIS CO., LTD.
    Inventor: Ho Seok Choi
  • Patent number: 10030801
    Abstract: A direct electric heating (DEH) system for heating a subsea pipeline is provided. The DEH system includes a subsea power cable adapted to be coupled to a three phase electric power source. The DEH system further includes two or more subsea DEH modules. Each subsea module of the two or more subsea DEH modules is provided for heating a different pipeline section of the subsea pipeline.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: July 24, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Damir Radan, Björn Rasch
  • Patent number: 9966892
    Abstract: An electronic magnetic bearing controller for controlling the position of a rotor of an electrical machine supported by an active magnetic bearing the position of which being measured by at least one inductive position sensor having an inductive coil, comprising an automatic reactive power compensation device for automatically compensating the reactive power consumed by the inductive position sensor.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: May 8, 2018
    Assignee: SKF MAGNETIC MECHATRONICS
    Inventors: Gregory Cossart, Joaquim Da Silva, Lakdar Sadi-Haddad
  • Patent number: 9935491
    Abstract: A polyphase power dispatching system and a polyphase power dispatching method are provided. The polyphase power dispatching system includes an electric meter, a single-phase electricity storage module, a switch and a control circuit. The electric meter can measure transmission statuses of power transmission lines of a polyphase power line group. The common terminal of the switch is connected to the single-phase electricity storage module. The selection terminals of the switch are connected to the power transmission lines in a one-to-one manner. The control circuit is connected to the electric meter and the switch. The control circuit can correspondingly control the switch based on the transmission status of each power transmission line, so that the switch selectively connects the single-phase electricity storage module to one of the power transmission lines.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: April 3, 2018
    Assignee: Industrial Technology Research Institute
    Inventors: Kuo-Hsiang Yang, An-Peng Wang, Jen-Chao Lu, Su-Wei Wang, Chih-Chieh Chen, Szu-Kai Wang
  • Patent number: 9893524
    Abstract: The present invention provides coordinated control methods of generator and SVC for improving power plant active power throughput and controller thereof. The method comprises: measuring the required input parameters for the generator and SVC control; judging the system topology and the control mode of SVC to determine the operation mode; and calculating the control reference based on the operation mode to control the generator and/or SVC. The proposed methods and coordinated controllers enable the SVC to share the required reactive power output of the power plant, convert the generator into “unity-power-factor-generator”, and therefore extend the active power output capability of the power plant.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: February 13, 2018
    Assignee: ABB Schweiz AG
    Inventors: Yao Chen, Guoju Zhang, Charles Sao
  • Patent number: 9882387
    Abstract: The present disclosure relates to a reactive power compensation system includes a first measurement unit, a second measurement unit, a reactive power compensation unit, and a controller. The first measurement unit measures impedance of each of at least one load. The second measurement unit measures a voltage and current provided to the at least one load. The reactive power compensation unit compensates the leading reactive power or the lagging reactive power. The controller monitors a change of the impedance in real time, checks a change of the voltage or current according to the change of the impedance, and controls the reactive power compensation unit according to a result of the check to compensate the leading reactive power or the lagging reactive power.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: January 30, 2018
    Assignee: LSIS Co., Ltd.
    Inventor: Yong-Kil Choi
  • Patent number: 9866109
    Abstract: A method is performed in a control device for controlling a power compensation arrangement including a voltage source converter and one or more power compensation branches, each power compensation branch including a thyristor controlled reactor, a thyristor switched reactor or a thyristor controlled capacitor. The voltage source converter and the one or more power compensation branches are connected to a same busbar. The method includes: detecting a request in an electrical power system to which the power compensation arrangement is connected; determining, based on the request, a need for reactive power supply to the electrical power system; providing reactive power by means of the voltage source converter and/or by one or more of the power compensation branches; and compensating, by means of the voltage source converter, any disturbances caused by the power compensation branches when providing the reactive power to the electrical power system. Corresponding devices are also disclosed.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: January 9, 2018
    Assignee: ABB SCHWEIZ AG
    Inventors: Jean-Philippe Hasler, Marcio De Oliveira
  • Patent number: 9853475
    Abstract: There are provided methods, devices, and systems relating to discharging thyristor-switched capacitors. For example, there is provided a method for discharging a first capacitor, a second capacitor, and a third capacitor. Each of the capacitors is coupled to respective phases of a transmission line. The first capacitor and the third capacitor are each coupled to their respective phase of the transmission line via a pair of anti-parallel thyristors, and the second capacitor is coupled directly to another phase of the transmission line with no thyristors therebetween. The method can include determining whether an angle of a voltage on the transmission line is within a threshold angle. Further, the method can include discharging the first, second, and third capacitors when the angle is within a threshold angle and the threshold angle is any value from a predetermined set of threshold angles.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: December 26, 2017
    Assignee: General Electric Company
    Inventors: Wei Ren, Einar Larsen
  • Patent number: 9825457
    Abstract: An autonomous breaker can apply a current through a high impedance source to a bus coupled to either end of a breaker in order to measure an impedance of the bus. The status of the bus can be determined from the measurement. Based on the determined status, a fault detection procedure can be selected and implemented to determine if a fault exists on the bus. When the fault detection procedure has been implemented and no fault has been detected, the breaker can close, and thus couple the bus to another bus.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: November 21, 2017
    Assignees: Transocean Sedco Forex Ventures Limited, Aspin Kemp & Associates
    Inventors: Edward Peter Kenneth Bourgeau, Jason Aspin
  • Patent number: 9807545
    Abstract: A communication apparatus comprises a close proximity wireless communication unit which is able to perform close proximity wireless communication with an external apparatus; a power control unit which starts control of power supply of the communication apparatus when the close proximity wireless communication unit receives electromagnetic waves from the external apparatus; and a control unit which executes shutdown processing for reducing power to each block controlled by the power control unit, wherein when the shutdown processing is executed, the control unit disables the close proximity wireless communication unit before start of the shutdown processing.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: October 31, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shuya Kaechi
  • Patent number: 9784777
    Abstract: The invention provides a method and system for precisely measuring AC power and detecting load impedance using a precise analog front-end, zero-crossing detectors, and a phase detection system capable of extracting precise phase information from the sensed voltage and current measurements. More particularly, the invention provides an apparatus, comprising a transmit circuit configured to generate a wireless field via an antenna for transferring charging power to a receiver device, for determining a phase difference between a first signal and a second signal. The apparatus further comprises a phase detection circuit to output a phase signal indicating a duration of a phase offset between a time-varying voltage and a time-varying current of the transmit circuit. The apparatus further comprises a capacitor configured to receive a variable current from a current source for the duration of the phase offset between the time-varying voltage and a time-varying current.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: October 10, 2017
    Assignee: QUALCOMM Incorporated
    Inventors: Arvind Govindaraj, Joseph Najib Maalouf
  • Patent number: 9787096
    Abstract: There is provided a method of stabilizing the voltage and reducing power losses in an electric network having a flow of live current and a flow of reactive power, the method comprising reducing the flow of live current by controlling the flow of reactive power within the network. There is also provided an electric network node having a first load point and a second load point, the second load point being at a lower load level than the first load point, the node comprising a reactive power absorber at the first load point and a reactive power generator at the lower load point.
    Type: Grant
    Filed: October 28, 2014
    Date of Patent: October 10, 2017
    Inventor: Hamad Musabeh Ahmed Saif Alteneiji
  • Patent number: 9760747
    Abstract: There is provided a communication apparatus comprising an antenna. A communication unit is able to use external power that is generated by receiving a signal from an external apparatus via the antenna, thereby transmitting a response to the signal that is received from the external apparatus to the external apparatus. A deactivation unit deactivates, in a case where the external power is generated by receiving the signal from the external apparatus via the antenna, supply of the external power from the antenna to the communication unit. A control unit performs control so as to interrupt deactivation of supply of the external power from the antenna to the communication unit by the deactivation unit.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: September 12, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Shuya Kaechi
  • Patent number: 9705321
    Abstract: Disclosed are various embodiments of power source redundancy in a power supply for a rack mounted computing device. The power supply includes a plurality of AC power converters configured to receive power from corresponding power sources. A first AC power converter provides DC power to a common DC bus of the power supply. A second AC power converter provides DC power to the common DC bus in response to a change in the voltage level provided by the first AC power converter.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: July 11, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: Darin Lee Frink, Peter G. Ross
  • Patent number: 9667139
    Abstract: A converter circuit and related technique for providing high power density power conversion includes a reconfigurable switched capacitor transformation stage coupled to a magnetic converter (or regulation) stage. The circuits and techniques achieve high performance over a wide input voltage range or a wide output voltage range. The converter can be used, for example, to power logic devices in portable battery operated devices.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: May 30, 2017
    Assignee: Massachusetts Institute of Technology
    Inventors: David M. Giuliano, David J. Perreault, Robert C. N. Pilawa-Podgurski
  • Patent number: 9641101
    Abstract: A method for controlling output energy of a power system includes following steps: Using a controlling unit to detect a phase offset between voltage and current of an AC power outputted from the power system. When the power system enters an energy-storage cycle, the controlling unit makes a power conversion unit output the AC power having a first preset power factor and store a partial energy of an AC grid in an energy-storage unit when the AC power is in a reactive power area. When the power system enters an energy-release cycle, the controlling unit makes the power conversion unit output the AC power having a second preset power factor and release the energy stored in the energy-storage unit, wherein an average value of the power factor in the energy-storage cycle and the energy-release cycle is the same as a preset average power factor.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: May 2, 2017
    Assignee: CHICONY POWER TECHNOLOGY CO., LTD.
    Inventors: Chu-Chen Yang, Chao-Jui Huang
  • Patent number: 9590424
    Abstract: The invention relates to a device for influencing reactive power flows in multi-phase alternating current systems comprising a plurality of thyristor-controlled or thyristor-switched coil branches, each of which comprises a first partial coil and a second partial coil, and a first partial coil and a second partial coil respectively form a structurally independent coil subassembly. The essential feature is that the inductance factor of the first partial coil is specifically dimensioned so as to be at least 10% greater than the inductance factor of the second partial coil and the second partial coil in a coil subassembly is disposed structurally above the first partial coil or the second partial coil is disposed structurally in a core region of the first partial coil.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: March 7, 2017
    Assignee: Coil Holding GmbH
    Inventors: Alexander Grisenti, Johann Muelleder, Peter Dopplmair
  • Patent number: 9537539
    Abstract: A method for managing power in a transmitter to wirelessly transmit the power to a receiver. The method includes transmitting AC power through a resonance frequency band to the receiver using a transmission resonant coil, transmitting a state information of the transmitter including information related to the number of receivers that can be supported by the transmitter through out-of-band communication having a specific frequency band which is different from the resonance frequency band, receiving a state information of the receiver including information related to a rectified DC power detected by the receiver through rectification of the AC power from the receiver through the out-of-band communication and adjusting the AC power to transmit to the receiver based on the information related to the rectified DC power.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: January 3, 2017
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Su Ho Bae
  • Patent number: 9531441
    Abstract: Disclosed are a wireless power receiver and a method of managing the same. The wireless power receiver to wirelessly receive power from a wireless power transmitter and transmit the power to a load includes a receiving unit to receive AC power from the wireless power transmitter that receives power from a power supply device, a rectifying unit to rectify the received AC power to DC power, and a power managing unit to manage the power transmitted to the load based on the rectified DC power.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: December 27, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Su Ho Bae
  • Patent number: 9531444
    Abstract: A receiver to wirelessly receive power from a transmitter, and including a receiving unit to receive AC power from the transmitter; a rectifying unit to rectify the received AC power to DC power, a power management unit to manage power to be transferred to a load based on the rectified DC power and a DC-DC converter to supply a DC voltage required by the load, or to the load with the rectified DC power. The power management unit generates and transmits a control signal to adjust the power transferred to the load based on the rectified DC power.
    Type: Grant
    Filed: October 6, 2014
    Date of Patent: December 27, 2016
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Su Ho Bae
  • Patent number: 9502899
    Abstract: Method and apparatus for controlling at least one generator and a Static Var Compensator (SVC) to improve dynamic performance of the power plant are provided. The method comprises: obtaining the required input parameters for control of said generators and SVC; determining a control mode of the generators and the SVC; calculating the control references based on the input parameters and the control mode of the generators and the SVC; and controlling the generators and/or the SVC according to the control references. The invention also relates to a corresponding apparatus which can implement the method of the invention.
    Type: Grant
    Filed: April 28, 2013
    Date of Patent: November 22, 2016
    Assignee: ABB SCHWEIZ AG
    Inventors: Yao Chen, Guoju Zhang, Charles Sao
  • Patent number: 9484755
    Abstract: An in-vehicle charging control device may comprise a control module, a charging socket, and a switching circuit. The charging socket has a charging connection confirming terminal (CC) and a protective grounding terminal (PE). The switching circuit is connected with the charging connection confirming terminal (CC) and the protective grounding terminal (PE) of the charging socket. The control module is connected with an in-vehicle battery via the switching circuit. The charging socket matches with a charging plug. The switching circuit is in a conducting state when the charging plug is plugged in the charging socket and in a disconnection state when the charging plug is not plugged in the charging socket.
    Type: Grant
    Filed: March 7, 2014
    Date of Patent: November 1, 2016
    Assignees: BYD Company Limited, Shenzhen BYD Auto R&D Company Limited
    Inventors: Yu Liu, Lianwen Zhou
  • Patent number: 9444254
    Abstract: A boost device is coupled to a compensation device that is configured to be connected to a power system. The boost device includes multiple portions, each of the multiple portions including at least one electrical element, and a solid-state switching device electrically connected to the at least one electrical element. The solid-state switching device is connected in parallel with the at least one electrical element such that closing the solid-state switching substantially prevents current flow to the at least one electrical element.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: September 13, 2016
    Assignee: Cooper Technologies Company
    Inventors: Karl Eric Fender, Clay L. Fellers
  • Patent number: 9385588
    Abstract: Methods and systems for controlling a reactive power contribution to reactive power flowing in an electricity distribution network, so as to optimize this reactive power flow are described. A reactive power characteristic of electrical power flowing in the electricity distribution network is detected at a power device. The reactive power characteristic relates to a reactive power component of electricity flowing in the network. On the basis of the detected reactive power characteristic a reactive power contribution to the electricity distribution network is controlled so as to adjust a value of the detected reactive power characteristic. This enables individual power consumption and/or provision devices to react autonomously to local variations in the electricity distribution network, and to provide a reactive power contribution, to drive the detected reactive power characteristic towards a desired value.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: July 5, 2016
    Assignee: Reactive Technologies Finland OY
    Inventor: Heikki Huomo
  • Patent number: 9356446
    Abstract: A boost device is coupled to a compensation device that is configured to be connected to a power system. The boost device includes multiple portions, each of the multiple portions including at least one electrical element, and a solid-state switching device electrically connected to the at least one electrical element. The solid-state switching device is connected in parallel with the at least one electrical element such that closing the solid-state switching substantially prevents current flow to the at least one electrical element.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: May 31, 2016
    Assignee: Cooper Technologies Company
    Inventors: Karl Eric Fender, Clay L. Fellers
  • Patent number: 9331482
    Abstract: Static synchronous compensator (STATCOM) systems and methods are disclosed. An example STATCOM system includes a reactive component configured for electrical connection to a power network. For example, the reactive component may be a capacitor bank. The system also includes an inductor electrically connected in series with the reactive component. Further, the system includes a converter electrically connected in series with the reactive component and the inductor. A method may include using the static synchronous compensator system to provide one of reactive power and active power to the power network.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: May 3, 2016
    Assignee: North Carolina State University
    Inventor: Qin Huang
  • Patent number: 9287933
    Abstract: Disclosed is an apparatus for power line communication. More specifically, in order to solve a problem of the conventional art, in which the magnitude of power line communication signals exceeds a reference value allowed in the law, the apparatus controls a communication signal to be selectively output a communication target phase among phases of a three-phase power line. Accordingly, it is possible to maintain the magnitude of the output communication signal to be low. Further, it is possible to reduce distortion of a power signal, caused by the communication signal, and malfunction of other power facilities due to the distortion. Further it is possible to easily and simply perform initiation of the power line communication.
    Type: Grant
    Filed: December 15, 2014
    Date of Patent: March 15, 2016
    Assignee: LSIS Co., Ltd.
    Inventor: Young Gyu Yu
  • Patent number: 9225243
    Abstract: A converter, for feeding a load via an inductor with a current having a controlled intensity between a maximum and a minimum level, includes a switch to permit or prevent, respectively, current towards said inductor, a first current sensor sensitive to the current flowing through switch when the switch is on, a second current sensor sensitive to the current flowing through said inductor when the switch is off, drive circuitry to turn the switch off and on upon receiving a first and a second logic signal, respectively, and comparison circuitry coupled to the first and the second current sensors to generate first and the second logic signals when, respectively: the current intensity detected by the first current sensor is offset a given amount with respect to the maximum level, and the current intensity detected by the second current sensor is offset a given amount with respect to the minimum level.
    Type: Grant
    Filed: December 17, 2012
    Date of Patent: December 29, 2015
    Assignee: OSRAM GmbH
    Inventors: Francesco Angelin, Paolo De Anna
  • Patent number: 9214706
    Abstract: Certain embodiments of the present invention disclose a battery heating circuit, wherein: the battery comprises a battery E1 and a battery E2. For example, the heating circuit comprises: a first charging/discharging circuit, which is connected with the battery E1, and comprises a damping component R1, a current storage component L1, a first switch unit 1 and a charge storage component C, all of which are connected in series to each other; and a second charging/discharging circuit, which is connected to the battery E2, and comprises a damping component R2, a current storage component L2, a second switch unit 2 and the charge storage component C, all of which are connected in series with each other.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: December 15, 2015
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma
  • Patent number: 9214813
    Abstract: The invention relates to a device (50) for limiting an electrical current in an electrical conductor of an electrical installation. The device (50) comprises a receiving unit adapted to receive a measurement of the electrical current in the electrical conductor, and further comprising a limiting unit adapted to limit said electrical current when the measured electrical current reaches a threshold. The device (50) is distinguished by comprising an obtaining unit adapted to obtain electrical energy from a second electrical conductor, wherein the limiting unit is adapted to inject said obtained electrical energy as an electrical current into the first electrical conductor, whereby the injected electrical current constitutes a replacement for at least a part of the first electrical current, which first electrical current is thereby limited. The invention also relates to an electrical system and a method for limiting an electrical current in an electrical conductor of an electrical installation.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: December 15, 2015
    Assignee: Ferroamp Elektronik AB
    Inventor: Bjorn Jernstrom
  • Patent number: 9192004
    Abstract: Disclosed are LED driver circuits, and methods of driving LED loads. In one embodiment, an LED driver can include: (i) an SCR coupled to an AC power supply, and configured to generate a DC voltage through a first rectifier circuit; (ii) a first stage conversion circuit having an isolated topology with power factor correction, where the first stage conversion circuit is configured to convert the DC voltage to a first output voltage; (iii) where the first stage conversion circuit includes a transformer having a primary side coupled to the DC voltage, and a secondary side coupled to the first output voltage through a second rectifier circuit; and (iv) a second stage conversion circuit having a non-isolated topology, where the second stage conversion circuit is configured to convert the first output voltage to an output current configured to drive an LED load based on a conducting angle of the SCR.
    Type: Grant
    Filed: July 8, 2013
    Date of Patent: November 17, 2015
    Assignee: Silergy Semiconductor Technology (Hangzhou) LTD
    Inventor: Wei Chen
  • Patent number: 9172323
    Abstract: A power saving driving circuit for a motor including power factor correction comprises an induction motor; a power factor correction capacitor; a first switching element allowing the motor to operate in a positive sine wave period of an power supply voltage; a diode allowing the power factor correction capacitor to be charged during the first switching element being OFF; a second switching element allowing the motor to operate in a negative sine wave period of the power supply voltage; another diode allowing the power factor capacitor to be charged during the second switching element being OFF; a third switching element connected in parallel to the diode; a fourth switching element connected in parallel to the other diode; and a controller controlling the motor to save power by controlling the third and fourth switching elements when a charged voltage in the power factor correction capacitor reaches a predetermined set value.
    Type: Grant
    Filed: December 12, 2013
    Date of Patent: October 27, 2015
    Inventor: Young Jun Kim
  • Patent number: 9160226
    Abstract: It is presented a converter cell comprising: a first terminal and a second terminal; an energy storage device connected on a first end to the second terminal; a first switch connected on a first end to the first terminal; a second switch arranged between the two terminals; and a third switch connected between a second end of the first switch and a second end of the energy storage device. A corresponding converter arm and method are also presented.
    Type: Grant
    Filed: November 11, 2011
    Date of Patent: October 13, 2015
    Assignee: ABB TECHNOLOGY AG
    Inventor: Falah Hosini
  • Patent number: 9136753
    Abstract: An electrical device, particularly having at least one lighting system having light emitting diodes, such as a television having LED backlighting (57), which has a stand-by mode (ZPM) with very low power consumption in which only one control unit (3) is supplied with power via a capacitive voltage divider. For this purpose, alongside parts of the power supply unit (2), the interference suppression capacitor (6) is also switched off.
    Type: Grant
    Filed: March 1, 2011
    Date of Patent: September 15, 2015
    Assignees: Minebea Co., Ltd., EM Microelectric-Marin S.A.
    Inventors: Daniel N. Luthi, Fabien Maupas, Yves Theoduloz, Manfred Schlenk, Hans Hoffmann, Mykhaylo Raykhman, Josef Fisch
  • Patent number: 9120394
    Abstract: Certain embodiments of the present invention provide a battery heating circuit, comprising a plurality of switch units 1, a switching control module 100, a damping component R1, an energy storage circuit, and a polarity inversion unit 101, wherein: the energy storage circuit is connected with the battery, and comprises a current storage component L1 and a plurality of charge storage components C1; the plurality of charge storage components C1 are connected with the plurality of switch units 1 in series in one-to-one correspondence to form a plurality of branches; the plurality of branches is connected in parallel with each other and then connected with the current storage component L1 and damping component R1 in series; the switching control module 100 is connected with the switch units 1, and is configured to control ON/OFF of the switch units 1.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: September 1, 2015
    Assignee: BYD Company Limited
    Inventors: Wenhui Xu, Yaochuan Han, Wei Feng, Qinyao Yang, Wenjin Xia, Shibin Ma, Xianyin Li
  • Patent number: 9118257
    Abstract: A single stage PFC LLC power converter is consist of two transformer, one forward transformer, one main transformer. The first winding of the forward transformer is connected with a capacitor in series then paralleled with another capacitor and this circuit is connected with the primary winding of the main transformer in series as primary load circuit in LLC power converter, the energy through the main transformer is transferred to the secondary circuit and the energy through the first winding of the forward transformer is transferred to the second winding of the forward transformer to correct the input current waveform.
    Type: Grant
    Filed: September 23, 2013
    Date of Patent: August 25, 2015
    Inventor: Fuxiang Lin
  • Patent number: 9104184
    Abstract: Systems and methods for switch-controlled VAR sources coupled to a power grid are described. In some embodiments, a system comprises a distribution power network coupled to a first switch-controlled VAR source. The first switch-controlled VAR source may comprise a processor, a voltage compensation component, and a switch. The first switch-controlled VAR source may be configured to obtain a first delay value, monitor a first proximate voltage, initiate a first delay duration based on the comparison of the first proximate voltage to at least one set point, the first delay duration being based on the first delay value, determine, with the processor, after the first delay duration, whether to connect the voltage compensation component based on the monitored voltage, and control, based on the determination, the switch to connect the voltage compensation component to adjust a network voltage or a network voltage component.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: August 11, 2015
    Assignee: VARENTEC, INC.
    Inventors: Deepakraj M. Divan, Hao Chen, Anish Prasai