Voltage Of Generator Or Circuit Supplied Patents (Class 322/28)
  • Patent number: 10914776
    Abstract: The invention relates to a method for detecting an error in a generator unit which has an electric machine (100) with a rotor winding (110), a stator winding (120), and a rectifier (130) connected thereto, via which the electric machine (100) is connected to an onboard electrical system (150) of a motor vehicle, wherein a voltage of the onboard electrical system (150) is controlled to a target value via an excitation current (IE) through the rotor winding (110) of the electric machine (100), and a curve of a phase voltage (Uy) of the stator winding (120) is monitored, wherein an error in the generator unit is inferred when a change of the phase voltage (Uy) is detected and a voltage of the onboard electrical system (150) changing within a threshold value range (S) is detected.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: February 9, 2021
    Assignee: Robert Bosch GmbH
    Inventors: Manuel Mueller, Sebastian Paulus, Zoltan Ersek
  • Patent number: 10875118
    Abstract: A method and apparatus for providing engine driven welding-type power supply includes an engine, a generator, an input power circuit, a welding-type power circuit, an auxiliary power circuit and a controller. The generator includes permanent magnets that create and provides a generator output from at least one polyphase winding. The input power circuit is connected to the generator output and the welding-type power circuit is connected to the input circuit, and provides a welding-type output. The auxiliary power circuit is connected to the input circuit and provides an auxiliary power output. The controller is connected to the auxiliary power and the welding type power circuits, and can command that there be no load for the generator. The generator is connected to the engine and connected to function as a flywheel to the engine and the engine does not include a flywheel other than the generator.
    Type: Grant
    Filed: November 13, 2017
    Date of Patent: December 29, 2020
    Inventors: Dennis R Sigl, Todd G. Batzler, Michael D. Madsen
  • Patent number: 10822067
    Abstract: A power system of a ship includes a first power storage device, a second power storage device, and a control system. The first power storage device has an energy density higher than that of the second power storage device. The second power storage device has a power density higher than that of the first power storage device. The control system is configured to: as a power generator application, prioritize discharging the first power storage device over discharging the second power storage device, such that base power is continuously supplied to an onboard electrical load connected to an onboard bus; and as a grid stabilization application, prioritize charging/discharging the second power storage device over charging/discharging the first power storage device to compensate for frequency variation or voltage variation of an onboard power grid.
    Type: Grant
    Filed: January 30, 2017
    Date of Patent: November 3, 2020
    Inventors: Hideaki Ezaki, Masato Hayashi, Masanori Hamamatsu, Soichiro Bando, Kazuma Tokuyama, Tatsuya Ohno, Kazuya Takeda, Yasunori Kujime
  • Patent number: 10804826
    Abstract: A control device 4 for a power generation system 1 includes a target voltage regulator part 43 configured to adjust the target voltage Vr of a generator 3. The target voltage regulator part 43 has: a voltage decrease function to reduce the target voltage Vr of the generator 3 in accordance with a decrease amount of a detection value Sm of a rotation speed S of a gas engine 2 or a frequency of the generator 3 if the detection value falls below an allowable variation value when a load is connected to the generator 3 via a circuit breaker 5; and a voltage decrease limiting function to maintain the target voltage Vr of the generator 3 at an allowable lower limit voltage determined on the basis of an output voltage V which is allowable to carry out normal operation of the load if the target voltage Vr of the generator 3 is lower than the allowable lower limit voltage.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: October 13, 2020
    Inventors: Junichi Taniguchi, Hiroshi Yamawaki, Yoshiharu Ito, Masao Takatsuka, Takuya Karatsu, Hazumu Abe, Makoto Gohara
  • Patent number: 10797574
    Abstract: An electrical machine has a stator with windings, first and second rotors, and an electrical output regulator. The first rotor carries alternating polarity first field magnets, such that, on drive mechanism rotation, the windings interact with the magnetic flux produced by the first magnets to create an EMF. The second rotor carries alternating polarity second field magnets, and has first and second rotational positions to reduce and increase, respectively, the magnetic flux energy. The electrical output regulator regulates a current from the windings to produce a torque on the rotors, as the drive mechanism increases from zero rotational speed, the torque rises above a threshold level that moves the second rotor from the first to the second rotational position, and, as the drive mechanism further increases the rotational speed, the torque peaks and then drops below the threshold level to move the second rotor back to the first rotational position.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: October 6, 2020
    Assignee: ROLLS -ROYCE plc
    Inventors: Simon Turvey, Keir Wilkie
  • Patent number: 10794216
    Abstract: A gas turbine engine according to an exemplary embodiment of this disclosure includes, among other things, a fan driven by a fan shaft rotatable about an engine axis; a fan drive electric motor providing a supplemental drive input to the fan; a turbine section driving an input shaft; a geared architecture driven by the input shaft of the turbine section and coupled to the fan shaft to provide a main drive input for driving the fan; and a generator including a rotor supported on the input shaft and a stator disposed on a static structure relative to the rotor, wherein the generator communicates electric power to power the fan drive electric motor.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: October 6, 2020
    Assignee: Raytheon Technologies Corporation
    Inventors: Daniel Bernard Kupratis, Frederick M. Schwarz, William G. Sheridan
  • Patent number: 10742156
    Abstract: A control apparatus controls rotating electrical machine which is applied to a vehicle in which an engine is automatically stopped in the case where predetermined automatic stop conditions are satisfied, and, the engine is automatically restarted in the case where predetermined restarting conditions are satisfied, the rotating electrical machine receiving supply of an exciting current from a transistor-chopper type exciting circuit in which a first pair of facing arms of a bridge circuit is configured with power transistors, and a second pair of arms is configured with diodes, and the rotating electrical machine having a power generation function based on rotational force of the engine. The control apparatus executes first grounding control in which, during automatic stop of the engine, among the first pair of arms, the power transistor connected on an earth side of the rotating electrical machine is put into an ON state.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: August 11, 2020
    Inventor: Takuto Suzuki
  • Patent number: 10725938
    Abstract: An auto-loop regulation system for a voltage regulator receives a plurality of pre-determined loop parameters through an interactive computing equipment, and the voltage regulator operates according to the plurality of pre-determined loop parameters, wherein the interactive computing equipment regulates at least one of the loop parameters automatically in real time according to an online loop value when the voltage regulator is operating online, and the interactive computing equipment keeps regulating the loop parameters until the online value of the voltage regulator matches with a target value.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: July 28, 2020
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Lijie Jiang, Xiaokang Wu, Suhua Luo, Qian Ouyang
  • Patent number: 10719997
    Abstract: Various embodiments provide prognostic vehicle diagnosis methodologies for monitoring the relative health of various vehicle components over time, to enable replacement of those vehicle components prior to component failure. Sensors monitoring those vehicle components transmit generated telematics data to a computing entity configured to generate a telematics data signature based on the sensor-generated data, and to compare the telematics data signature against a reference data signature to ascertain the relative health of the vehicle component. If the telematics data signature satisfies a failure threshold identified within the reference signature, the computing entity initiates a replacement process at least in part by generating an alert for a maintenance personnel.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: July 21, 2020
    Assignee: United Parcel Service of America, Inc.
    Inventors: Philip Aiello, Ralph Gallagher
  • Patent number: 10707788
    Abstract: A vehicle power system includes a controller that reduces a voltage setpoint of an alternator by a predetermined amount in response to a magnitude of electric charge provided by the alternator during a predetermined time period exceeding a first threshold and a rate of change of power output by the alternator exceeding a second threshold during the time period. The controller also regulates an output voltage of the alternator based on the setpoint.
    Type: Grant
    Filed: July 28, 2015
    Date of Patent: July 7, 2020
    Assignee: Ford Global Technologies, LLC
    Inventors: Todd Ansbacher, Alan Francis Judge, Jeffrey Raymond Mohr, Frederick Shell, Michael J. Irby, Karen Price, Gabriel Jim, Christopher Semanson
  • Patent number: 10680503
    Abstract: An electrical machine including a rotor and a stator, at least one of the rotor and stator being provided with superconducting first electrical windings; and a set of one or more screen electrical windings, provided in the form of one or more further superconducting electrical windings, arranged around and radially outward of the first electrical windings; wherein the set of screen electrical windings is arranged to be supplied with an electrical current for generating a magnetic field of suitable magnitude and phase to reduce the magnitude of the magnetic field, generated at least by the first electrical windings during operation of the electrical machine, radially outwards of the screen electrical windings.
    Type: Grant
    Filed: July 7, 2016
    Date of Patent: June 9, 2020
    Assignee: ROLLS-ROYCE plc
    Inventors: Stephen Williamson, Alexander C Smith, John J A Cullen, Ellis F H Chong
  • Patent number: 10669978
    Abstract: A method and system of improving the efficiency of motor vehicles includes stopping an engine of a motor vehicle system if the motor vehicle system is immobile for more than a predetermined period of time, according to one embodiment. The method and system includes starting the engine with a magneto system, in response to one or more vehicle conditions, such as operation of a throttle, operation of a clutch, and/or operation of a brake lever, according to one embodiment.
    Type: Grant
    Filed: July 16, 2018
    Date of Patent: June 2, 2020
    Inventor: Laurent Perier
  • Patent number: 10637469
    Abstract: A fast shut-off solenoid circuit network includes a solenoid circuit and a current dissipation circuit. The solenoid circuit is operable in response to an electrical current, and configured to operate in an enable mode and a disable mode. The current dissipation circuit is configured to dissipate the current discharged from the solenoid circuit in response to invoking the disable mode. The fast shut-off solenoid circuit network further includes a dissipation bypass circuit. The dissipation bypass circuit is configured to divert the current discharged by the solenoid circuit away from current dissipation circuit when operating in the enable mode.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: April 28, 2020
    Inventors: Michael A. Wilson, Eduardo Ahuactzin Parra
  • Patent number: 10622859
    Abstract: The invention relates to an electronically commutated electric machine (2) comprising: a rotor (21); an exciting winding (6) that is located at the rotor (21) in order to generate or alter a direct magnetic field in the rotor (21); a stator (22) comprising a three- or multi-phase stator winding (23) with phases that can be controlled via phase lines (8). The exciting winding (6) is connected to the stator winding (23).
    Type: Grant
    Filed: November 22, 2011
    Date of Patent: April 14, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Martin Neuburger, Kurt Reutlinger
  • Patent number: 10603921
    Abstract: In accordance with an embodiment, a liquid circulation device comprises a plurality of piezoelectric pumps configured to circulate liquid in a replenishing tank to a liquid discharge head through an operation of a piezoelectric actuator thereof; a DC power supply; a switching circuit configured to switch an output of the DC power supply to supply a driving voltage to the piezoelectric actuator of the piezoelectric pump; and a control circuit configured to control the driving voltage by controlling a switching timing of the switching circuit.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: March 31, 2020
    Inventor: Kazuhiro Hara
  • Patent number: 10574168
    Abstract: An electrical motor device according to the present invention is provided with a control unit. The control unit is configured to adjust the ratio of transformation by adjusting the ratio between a first time period, in which all upper-arm-side switching elements are on and all lower-arm-side switching element are off, and a second time period, in which all upper-arm-side switching elements are off and all lower-arm-side switching elements are on, and to select one of a plurality of driving modes for each control cycle. The plurality of driving modes include: a dual-driving mode including the first time period and the second time period in one control cycle during electrical motor driving; and an electrical motor driving mode not including the first time period and the second time period in one control cycle during electrical motor driving.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: February 25, 2020
    Inventor: Masamichi Nawa
  • Patent number: 10498272
    Abstract: A field circuit includes a positive pole side switching element which is for controlling field current that flows in a field winding and a negative pole side switching element which is for interrupting the field current; a field circuit control section includes a field high-speed interruption determination block and a field current interruption speed control block; and at the time of interrupting the field current at a high speed, the field current is interrupted immediately by turning OFF both switching elements of the positive pole side and the negative pole side and interruption speed of the field current is controlled by intermittently driving the negative pole side switching element.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: December 3, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takanori Matsunaga, Ryo Nakamura, Kenichi Akita
  • Patent number: 10497988
    Abstract: Provided is a battery module and an electronic device, the battery module including a first battery, a second battery, a correcting element unit, and a battery controller, wherein the first battery includes a first internal resistance and provides a first current, the second battery is connected to the first battery, includes a second internal resistance and provides a second current, the correction element unit is connected to the first battery or the second battery and includes a variable resistor or a current source, the battery controller controls the correction element unit such that the first current is identical to the second current on a basis of a difference between values of the first internal resistance and the second internal resistance, and therefore performances of the first battery and the second battery are prevented from being deteriorated.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: December 3, 2019
    Inventors: Jimin Oh, Jung Hee Suk, Yil Suk Yang, Jong Pil Im
  • Patent number: 10491147
    Abstract: System and method are disclosed for power management in a vehicle having two or more alternators. An example vehicle power system includes first and second alternators, and a processor. The processor is configured to determine that a load coupled to the first and second alternators increases at greater than a threshold rate. The processor is also configured to responsively (i) reduce respective voltage setpoints of the first and second alternators, and (ii) turn off the second alternator. And the processor is further configured to, after determining that a voltage transient caused by the load has expired, turn on the second alternator.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: November 26, 2019
    Assignee: Ford Global Technologies, LLC
    Inventors: Alan Francis Judge, Gabriel Jim, Jeffrey Raymond Mohr, James Brian Keyse, Anthony Thomas Spoto, John G. Fraser
  • Patent number: 10302500
    Abstract: A differential pyroelectric infrared detector circuit formed by connecting a pyroelectric crystal to two separate impedance conversion circuits. The separate circuits derive two low impedance outputs which are connected to a differential or instrumentation amplifier. The circuit will eliminate electronic perturbations from outside sources such as line frequency interference or notice from an external but nearby oscillator which may be used to operate a microprocessor circuit, and other sources of electronic noise. The two outputs when connected differentially also have an output which is a factor of two greater than a normal standard single ended device, but also only produce noise which is only the square root of 2 or greater. The circuit additionally increased the signal to noise of the detector by a factor of the square root of the increase in signal or by about 1.41 times the standard single ended device.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: May 28, 2019
    Assignee: Laser Components GmbH
    Inventor: Alan Doctor
  • Patent number: 10273876
    Abstract: An alternator includes an exciter field device generating an exciter magnetic field in a first air gap, an exciter armature device configured to rotate with respect to the exciter magnetic field and impart a first voltage in a first set of coils at the first air gap, a main stator device including a second set of coils, and a rotor field device configured to be energized by the first current in the first set of coils and generate a main magnetic field that imparts a second voltage on the main stator device at a second air gap. The main stator device and the exciter field device lie in on a common plane normal to an axis of rotation, and the exciter armature device is inwardly spaced from the exciter field device, main stator device, and the rotor field device.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: April 30, 2019
    Assignee: Kohler Co.
    Inventors: Isaac S. Frampton, Adam Larson, Frank C. Formas
  • Patent number: 10263551
    Abstract: The method of control according to the invention slaves a DC voltage generated by the alternator to a predetermined setpoint value by controlling an excitation current flowing in an excitation circuit comprising an excitation winding of a rotor of the alternator. The excitation current is controlled by means of a semiconductor switch, in turn controlled by a control signal having a predetermined period. The method comprises a detection of a failure of the excitation circuit. At least one short-circuit of the excitation winding is detected. According to another characteristic of the method, the control signal is generated on the basis of a combination of a setpoint signal formed by pulses of the predetermined period exhibiting a duty ratio representative of the setpoint value and of a detection signal indicative of the short-circuit.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: April 16, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Pierre Tisserand, Pierre Chassard, Thibault Arrou, Giuseppe Pasetti, Francesco Tinfena, Alexandre Schmitt
  • Patent number: 10243495
    Abstract: The present disclosure relates to motor vehicles. The teachings thereof may be embodied in the operation and control of an externally excited electrical generator in an on-board electrical system of a motor vehicle. An example method may include: setting the excitation voltage within the scope of regulating an actual output voltage of the generator at a predetermined setpoint output voltage of the generator; evaluating load requirements of at least one peak load consumer supplied from the on-board electrical system; identifying exceptional situations based on the load requirements; and in the event of an exceptional situation, setting an associated temporary excitation output voltage of the generator.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: March 26, 2019
    Inventors: Hans Schroth, Michael Kutzner
  • Patent number: 10234484
    Abstract: A power monitoring system includes a plurality of current sensors suitable to sense respective changing electrical current within a respective conductor to a respective load and a conductor sensing a respective voltage potential provided to the respective load. A power monitors determines a type of circuit based upon a signal from at least one of the current sensors and a signal from the conductor, wherein the type of circuit includes at least one of a single phase circuit, a two phase circuit, and a three phase circuit. The power meter configures a set of registers corresponding to the determined type of circuit in a manner such that the configuring is different based upon each of the single phase circuit, two phase circuit, and three phase circuit suitable to provide data corresponding to the determined type of circuit.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: March 19, 2019
    Assignee: Veris Industries, LLC
    Inventors: Martin Cook, Michael Bitsch
  • Patent number: 10203708
    Abstract: A power regulator has an input terminal to receive an input voltage, an output terminal to output an output voltage, a transistor connected to the input and terminals, a feedback terminal to receive a feedback voltage, and a control circuit to control the transistor based on the feedback voltage at the feedback terminal and a reference voltage so as to keep the output voltage constant. Various implementations include an open detection circuit to detect an open state of the feedback terminal and, on detecting the open state, to vary the reference voltage and thereby keep the transistor in an OFF state, or a voltage holding circuit configured to hold the output voltage constant at a second voltage lower than the first voltage when the feedback terminal is in an open state.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: February 12, 2019
    Assignee: Rohm Co., Ltd.
    Inventors: Makoto Yasusaka, Zhencheng Jin
  • Patent number: 10181808
    Abstract: When an electrical primary frequency of power fluctuation of a motor is smaller than a determination threshold value fth1 that is a lower limit frequency of a frequency band where resonance occurs in a circuit including a reactor and a capacitor of a boosting converter or greater than a determination threshold value that is an upper limit frequency of the frequency band where resonance occurs, a value G2 is set as a gain G and when the electrical primary frequency is equal to or greater than the determination threshold value fth1 and equal to or smaller than the determination threshold value, a value G3 at which the upper limit frequency of the resonant frequency band has a low frequency than the determination threshold value fth1 is set as the gain G, and a current control in the boosting converter is executed using the gain G set in this way. The resonance of the circuit including the reactor and the capacitor of the boosting converter can be prevented.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: January 15, 2019
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Kojiro Asakawa, Kazuhito Hayashi, Daigo Nobe
  • Patent number: 10131366
    Abstract: A hybrid-vehicle power generator control apparatus includes an integrated control unit that issues a driving command and a control command to an engine control unit and an electric-power conversion system control unit, respectively, based on requested electric power requested by a load apparatus, and a limiter that limits the control command from the integrated control unit such that when rotation frequency of an electric power generator is same as or lower than a predetermined value, the value of torque generated by the electric power generator becomes smaller than the value of torque generated by an engine. A limitation of the control command by the limiter prevents torques of the engine and the electric power generator from stepping out of the stable operating points.
    Type: Grant
    Filed: December 14, 2011
    Date of Patent: November 20, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yasuhiko Wada, Hisanori Yamasaki, Keita Hatanaka, Hidetoshi Kitanaka, Yuruki Okada
  • Patent number: 10114048
    Abstract: Example implementations relate to circuits. For example, an implementation includes a detection circuit including a comparator circuit. The comparator circuit includes a first input terminal, a second input terminal, and an output terminal. The detection circuit also includes a reference voltage circuit to provide a set point voltage to the comparator circuit via the first input terminal. The detection circuit further includes a diode to reduce the set point voltage from a first magnitude to a second magnitude when the first magnitude is equal to or lower than a magnitude of the load voltage.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: October 30, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sergio Alejandro Lopez Ramos, Juan Luis Lopez Rodriguez, David Soriano Fosas
  • Patent number: 10116166
    Abstract: The invention relates to apparatus (40) comprising: an inductor; a rectifier coupled to the inductor; a voltage converter coupled to the rectifier; a battery coupled to the voltage converter; a load coupled to the voltage converter; and a control unit coupled to the voltage converter and arranged to cause either the battery to be charged by the rectifier, or the load to be powered by the rectifier, or the load to be powered by the battery, as a function of the state of a switch for controlling powering of the load and as a function of the output voltage of the rectifier.
    Type: Grant
    Filed: August 4, 2014
    Date of Patent: October 30, 2018
    Assignee: Phlox
    Inventor: Christophe Blanc
  • Patent number: 10095211
    Abstract: A method for implementing energy saving for a mixed insertion system (80) of rectifiers with different power includes: acquiring work-related input information, and identifying a type of a rectifier (100); determining a power-on/power-off control mode of each rectifier (200); and performing power-on/power-off rotation, and load change rotation (400) and periodic rotation (500) starting according to the power-on/power-off control mode of each rectifier (300). A mixed insertion system of rectifiers with different power and a device for implementing energy saving thereof are further disclosed.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: October 9, 2018
    Assignee: ZTE Corporation
    Inventors: Wei Wang, Dongbo Liu, Bing Xue
  • Patent number: 10097124
    Abstract: The invention relates to a voltage regulator (43) for a motor vehicle alternator (44). The device comprises a control module (I) for controlling an excitation current (lexc) in an excitation winding (3) of the alternator (44) according to a difference (5) between a setpoint voltage (DO) and a control voltage (Dbat) of an on-board network (9). The on-board network (9) of the vehicle is powered by a battery (10) to which the alternator (44) is connected. According to the invention, the voltage regulator (43) further comprises a safety module (30) that monitors the control voltage (Ubat) and which is separate from the control module (I). In a particular embodiment, the control module (I) and the safety module (30) are connected electrically by external bonding interconnections.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: October 9, 2018
    Assignee: Valeo Equipments Electriques Moteur
    Inventors: Pierre Chassard, Pierre Tisserand
  • Patent number: 10070499
    Abstract: A system to control an electrical device, such as a lighting component or set of components. The system includes a set of connection lines, a power control module and a load interface component. The power control module is responsive to an alternating current source being connected to one of a first connection line and a second connection line to provide a regulated voltage signal output. A load interface component receives the regulated voltage signal output to control the electrical device.
    Type: Grant
    Filed: January 3, 2018
    Date of Patent: September 4, 2018
    Assignee: Brilliant Home Technology, Inc.
    Inventors: J. Marcus Stewart, Aaron T. Emigh, Steven Stanek
  • Patent number: 9997923
    Abstract: The invention relates to a grid synchronizer for connecting an AC output of a power converter to the AC grid mains. In one aspect the invention provides a grid synchronizer comprising an inverter controller to control an AC output of the inverter, the controller including a receiver to receive grid data from a grid sensor location remote from said inverter. In another aspect we describe techniques for rapid removal of charge from a control terminal of a power switching device such as a MOSFET, IGBT or Thyristor using a particular driver circuit.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: June 12, 2018
    Assignee: SolarCity Corporation
    Inventors: Gehan Anil Joseph Amaratunga, Lesley Chisenga, Andrabadu Viraj
  • Patent number: 9985561
    Abstract: The invention relates to a method for controlling a generator of electric energy that is connected to an electric supply grid on a grid connection point, comprising the following steps: incorporating at least one grid characteristic of the electric supply grid related to the grid connection point, and controlling the generator in such way that it feeds power into the electric supply grid depending on the incorporated grid characteristic.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: May 29, 2018
    Assignee: Wobben Properties GmbH
    Inventors: Volker Diedrichs, Kai Busker, Alfred Beekmann
  • Patent number: 9982942
    Abstract: A hand dryer comprising a universal brushed AC blower vacuum motor, one or more resistive circuits of a heating element, and a universal voltage controller that selectively alternates the configuration and the electrical connection of the resistive circuits, in response to a detected input voltage is disclosed.
    Type: Grant
    Filed: February 4, 2015
    Date of Patent: May 29, 2018
    Assignee: World Dryer Corporation
    Inventor: David Boyd Fisher
  • Patent number: 9966855
    Abstract: A switching converter having a high-side switching transistor and a low-side switching transistor and an inductor, having a circuit for generating a simulated waveform representing a sawtooth inductor current waveform. A circuit for monitoring and voltage at a switch node between the high-side and low-side transistors to determine a time during which the inductor current is increasing and a time during which the inductor current is decreasing wherein voltage across the low-side transistor when it is conducting represents a first portion of the simulated sawtooth inductor current waveform. A circuit for utilizing the time when the inductor current is increasing, the time when the inductor current is decreasing and the voltage across the low-side transistor when it is conducting to generate a portion of the simulated inductor current waveform when the high-side transistor is conducting. A method and a power supply utilizing this circuit are also disclosed.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 8, 2018
    Inventors: Scott E. Ragona, Rengang Chen, David Jauregui
  • Patent number: 9966812
    Abstract: A static vacuum shafting device for an integrated rotary transformer includes: a driving component, a vacuum sealing cover, a position detection component, a shafting base, a vacuum insulation sleeve, three O-shaped seal rings, a first rolling bearing, a second rolling bearing, a bearing gap ring, a transmission shaft, a shafting flange, a walking rolling bearing, and two bearing glands. The driving component includes a motor stator, a rotary transformer stator, a motor and rotary transformer integrated rotor, a rotor flange plate and a stator-fixing pressing block which are coaxially assembled. The vacuum sealing cover includes a sealing cover upper flange, a sealing cover, and a sealing cover lower flange. The shafting device couples a motor shaft to a load rigidly, thereby achieving a “zero-transmission” method and a “zero-leakage” sealed transmission of a shafting, and is particularly suitable for a power transmission of a vacuum robot in a high-vacuum environment.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: May 8, 2018
    Inventors: Bo Zhang, Pinkuan Liu, Xiaobo Zhu, Yujie Li
  • Patent number: 9859752
    Abstract: An uninterruptible power supply (UPS) includes a line terminal, a load terminal, a double-conversion circuit coupled in series, and further includes a bypass circuit, and a synchronize circuit. The line terminal couples to a doubly fed induction generator (DFIG). The load terminal couples to a load having a demanded power. The double-conversion circuit regulates grid power from the line terminal to the demanded power at the load terminal. The bypass circuit is coupled between the line terminal and the load terminal, and configured to deliver regulated power generated by the DFIG to the load terminal when the grid power is lost. The synchronize circuit is coupled between the double-conversion circuit and the DFIG, and, when the grid power is lost, the synchronize circuit injects a current through the double-conversion circuit and into the DFIG, synchronizing the regulated power generated by the DFIG to the demanded power.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: January 2, 2018
    Assignee: General Electric Company
    Inventors: Arvind Kumar Tiwari, Yashomani Y. Kolhatkar, Silvio Colombi
  • Patent number: 9813004
    Abstract: A synchronous machine and related systems include a stator and rotor separated by an air gap. The rotor includes a rotating DC power supply coupled to exciter windings disposed adjacent the air gap. Power from air gap harmonics, including air gap slot harmonics induce current in the exciter windings, which is rectified and supplied to the rotor field windings. In operation, a desired current level in the rotor field windings can be achieved through control of the DC power supply or superposition of harmonics into the stator winding current which induces the prescribed current in exciter windings.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: November 7, 2017
    Assignee: ABB Schweiz AG
    Inventors: Ghanshyam Shrestha, Darren Tremelling, Waqas Arshad, Wen Ouyang, Jan Westerlund
  • Patent number: 9735719
    Abstract: The present invention relates to the field of generator technology. It is an object of the invention to control the stability in an electric grid in which a plurality of generators are connected providing electric power to the grid. A static exciter system includes a control device for controlling the field voltage of the field winding of at least two generators connected to a grid system via a busbar.
    Type: Grant
    Filed: May 6, 2015
    Date of Patent: August 15, 2017
    Assignee: General Electric Technology GmbH
    Inventors: Luis Diez-Maroto, Luis Rouco-Rodriguez, Fidel Fernandez-Bernal, Idriss El-Merdoui
  • Patent number: 9673741
    Abstract: This system for supplying electrical power to a load includes an asynchronous generator including a cage rotor intended to be driven by motor means and a rectifier adapted to rectify the voltage delivered by the generator. The rectifier is a rectifier employing unidirectional electronic components. The power supply system further includes a reactive power source for magnetizing the asynchronous generator.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: June 6, 2017
    Inventors: Eric Fessler, Gilbert-Philippe Crouzet, Loic LeClere
  • Patent number: 9628007
    Abstract: In a power generator, a determiner determines whether a phase voltage output from each of multiphase armature windings has exceeded a threshold voltage. A turn-on unit turns on at least one of the protective switches as a target protective switch to limit the output voltage of the rectifier circuit to be lower than the threshold voltage upon the phase voltage output from at least one of the multiphase armature windings corresponding to the at least one of the protective switches has exceeded the threshold voltage.
    Type: Grant
    Filed: October 26, 2015
    Date of Patent: April 18, 2017
    Inventors: Asaka Kimura, Takatoshi Inokuchi, Masaya Nakanishi, Toshinori Maruyama
  • Patent number: 9628008
    Abstract: A method and apparatus for operating a generator control unit having power bridge, further including having an input and at least one output, wherein the input is operably coupled with a generator power output, and a controller communicatively coupled with the power bridge and configured to operate the power bridge.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: April 18, 2017
    Inventors: Brandon Joseph Fedders, David Dimitri Karipides, Slobodan Gataric
  • Patent number: 9622331
    Abstract: A discharge switch device is provided that includes a comparator portion, a temperature compensation diode, and a trigger portion. The comparator portion is configured to compare an input voltage value to a reference voltage value. The temperature compensation diode is configured to reduce variation of the reference voltage value. The trigger portion is configured to discharge stored energy when the input voltage value exceeds the reference voltage value.
    Type: Grant
    Filed: September 5, 2013
    Date of Patent: April 11, 2017
    Inventor: Michael Joseph Cochran
  • Patent number: 9605681
    Abstract: An estimating section detects a signal including counter electromotive voltage information of the motor, and estimating a magnetic pole electric angle and a rotational speed of the motor. A driving current controller repeats generation and cut-off of the driving current supplied from a power supply to the motor via the inverter circuit or regenerated from the motor to the power supply in a low-speed period between a stopped state and a predetermined rotational speed in an accelerating operation at a motor starting time or a decelerating operation at a motor stopping time. The estimating section detects the signal at the cut-off time so as to estimate the magnetic pole electric angle and the rotational speed in the low-speed period.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: March 28, 2017
    Assignee: Shimadzu Corporation
    Inventor: Junichiro Kozaki
  • Patent number: 9584055
    Abstract: A voltage regulator system for regulating an output voltage of a genset includes a voltage regulator for reducing terminal voltage in response to a reduction in terminal frequency. A plurality of under-frequency roll-off (UFRO) states is provided in the voltage regulator, with each UFRO state being configured to implement a UFRO characteristic. An operational signal indicative of an operating condition of the genset forms the basis for selection of the UFRO characteristic.
    Type: Grant
    Filed: July 17, 2012
    Date of Patent: February 28, 2017
    Assignee: Caterpillar (NI) Limited
    Inventors: Alan Cooper, Keith Chambers, David McGowan, John Morrow
  • Patent number: 9564845
    Abstract: A system and method for controlling the main field current in an electrical generator is disclosed. The system can include a controller to sense the voltages and currents in the system to identify load faults. The system can also comprise one or more switches and an energy dissipator to absorb, store, or dissipate the main field current in the event of a load fault, such as a short circuit. In the event of a load fault, the controller can change the position of the one or more switches to redirect the main field current from the main field windings of the rotor to the energy dissipator. The energy dissipator can absorb or store the main field current significantly reducing the time required to stop the output current of the generator.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: February 7, 2017
    Inventors: Matthew J. Krolak, Lijun Gao, Shengyi Liu
  • Patent number: 9548693
    Abstract: Methods and a voltage regulator are provided for distributing power sourcing in a hybrid power plant system. The voltage regulator is configured to monitor an output power of a generator and control an excitation signal provided to the generator based at least in part on the generator output power.
    Type: Grant
    Filed: October 18, 2012
    Date of Patent: January 17, 2017
    Assignee: Regal Beloit America, Inc.
    Inventors: David Bruce Hyypio, Myron Roman Mychal
  • Patent number: 9525370
    Abstract: A method for controlling an alternator or alternator-starter of a motor vehicle, the electric machine being capable of providing an electric current, the strength of which varies on the basis of the excitation signal (EXC). A duty cycle is associated with each excitation signal. The method includes comparing the difference between the duty cycle values of two consecutive excitation signals at a predetermined threshold. If the difference is greater than the predetermined threshold, a gradual response phase is released, during which the duty cycle of the excitation signals is gradually increased, particularly in a substantially linear manner. At the start of the gradual response phase, the duty cycle of the consecutive excitation signals is increased by a predetermined jump (D,B), then the duty cycle is gradually increased. The duty cycle jump at the start of the gradual response phase being less than or equal to the release threshold of the gradual response phase.
    Type: Grant
    Filed: May 27, 2009
    Date of Patent: December 20, 2016
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Pierre Tisserand, Pierre Chassard
  • Patent number: 9515554
    Abstract: A power supply includes: a first connection terminal connectable with a DC power supply to which a first load and a generator are connected in parallel; a second connection terminal connectable with an electric storage which stores regenerative power generated by the generator; a third connection terminal connectable with a second load; a DC-DC converter; and a controller which controls the DC-DC converter. The power supply further includes: a first power path including one end connected to the first connection terminal and the other end connected to a first input/output terminal of the DC-DC converter; a second power path including one end connected to the second connection terminal and the other end connected to a second input/output terminal of the DC-DC converter; and a third power path including one end connected to the third connection terminal and the other end connected to the second power path.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: December 6, 2016
    Inventors: Masakazu Okaniwa, Yoshihiro Ikushima