Condition Responsive Patents (Class 318/806)
  • Patent number: 10794938
    Abstract: A voltage detecting circuit includes a rectifying circuit, a voltage dividing circuit, and a comparing circuit. The rectifying circuit is configured to rectify a plurality of AC phase voltages to output a plurality of rectified voltages respectively. The voltage dividing circuit is configured to divide the plurality of rectified voltages respectively to output a plurality of sampling voltages. The comparing circuit is configured to compare the plurality of sampling voltages with a reference voltage respectively to provide a plurality of corresponding phase failure detecting voltages. On the condition that the AC phase voltages are unbalanced, the phase failure detecting voltage switches between a high level and a low level.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: October 6, 2020
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Yi-Kai Chou, Yi-Jan Chang
  • Patent number: 10739203
    Abstract: A magnetic field communication system and method is devised for communicating a signal indicating an internal state of a bearing through a magnetic field and for converting the signal communicating through the magnetic field into power to analyze the internal state of the bearing. The system includes a sensor unit disposed inside a bearing and an adapter disposed outside the bearing. The sensor unit includes a sensor to detect a temperature of oil inside the bearing and to output a sensing signal indicative of the detected oil temperature, and an interface to convert the outputted sensing signal into a magnetic field signal and to transmit the magnetic field signal outside the bearing. The adapter receives the transmitted magnetic field signal from the sensor unit and analyzes the received magnetic field signal in order to determine a status of the oil temperature.
    Type: Grant
    Filed: March 15, 2018
    Date of Patent: August 11, 2020
    Assignee: Doosan Heavy Industries Construction Co., Ltd
    Inventors: Jong Min Choi, Hyun Woo Son
  • Patent number: 10700508
    Abstract: In the field of multi-terminal electrical power network protection, a protection apparatus comprises a measurement apparatus to measure the respective terminal current (IL, IR1, IR2, IR3, IR4, IR5) flowing at each terminal (L, R1, R2, R3, R4, R5) in a multi-terminal network that includes a plurality of electrically interconnected terminals (L, R1, R2, R3, R4, R5). The protection apparatus also includes a control unit that is programmed to process the measured terminal currents (IL, IR1, IR2, IR3, IR4, IR5) to obtain first and second summed values (IPOS(n), INEG(n)).
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: June 30, 2020
    Assignee: General Electric Technology GmbH
    Inventors: Hengxu Ha, Sankara Sri Gopala Krishna Murthi
  • Patent number: 10661112
    Abstract: An information related to the position of an actuator coupled to a cable which is coupled to a motor is received. A filter is used to provide an input to a motor controller coupled to the motor, to adjust torque on the motor such that a strength curve is implemented relative to the position of the actuator.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: May 26, 2020
    Assignee: Tonal Systems, Inc.
    Inventors: Aly E. Orady, Bret G. Stott
  • Patent number: 10622833
    Abstract: A network subscriber unit for an electrical energy supply network includes a control unit configured to control the power exchange of the network subscriber unit with the energy supply network, a device configured to determine a voltage zero crossing at a connection point of the network subscriber unit with the energy supply network and a receiving unit of the network subscriber unit configured to receive a signal of a reference time. The control unit is in this case configured to determine a time offset between a time of the voltage zero crossing determined by the device and the received reference time and to control the power exchange based on the time offset.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: April 14, 2020
    Assignee: SMA Solar Technology AG
    Inventor: Andreas Falk
  • Patent number: 10612827
    Abstract: Controls for chillers with variable speed and variable geometry compressors are disclosed. In exemplary embodiments, a centrifugal compressor equipped with a variable frequency drive and variable inlet guide vanes may be utilized. A controller is operable to determine a chiller capacity command, a speed command, and a vane position command. The speed command and vane position command may maintain system operation at or near a surge control boundary over one or more capacity ranges to enhance efficiency and deviate from the surge control boundary over certain capacity ranges to improve controllability or avoid control aberrations.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: April 7, 2020
    Assignee: Trane International Inc.
    Inventor: Lee L. Sibik
  • Patent number: 10606674
    Abstract: A computer-implemented method for prognostic network management may include (1) monitoring a health indicator of a physical component of a device in a network, (2) using the health indicator to estimate a remaining useful life of the physical component, (3) detecting that the remaining useful life of the physical component has reached a predetermined threshold, and (4) reconfiguring the network in response to detecting that the remaining useful life of the physical component has reached the predetermined threshold so that failure of the physical component does not cause the network to become unavailable to any user of the network. Various other methods, systems, and computer-readable media are also disclosed.
    Type: Grant
    Filed: March 1, 2017
    Date of Patent: March 31, 2020
    Assignee: Juniper Networks, Inc
    Inventors: Elmer Tolentino, Graham S Pritchard, Steven Keck, Jayesh Champaneri, Dharini Hiremagalur
  • Patent number: 10551516
    Abstract: Apparatus and methods of identifying rock properties in real-time during drilling, are provided. An apparatus includes an acoustic sensor installed in a drilling fluid circulation system of a drilling rig, the acoustic sensor coupled to one of the following: (i) a bell nipple, (ii) a gooseneck, or (iii) a standpipe. Raw acoustic sensor data generated real-time as a result of rotational contact of the drill bit with rock during drilling is received, and a plurality of acoustic characteristics are derived from the raw acoustic sensor data. The lithology type of rock undergoing drilling may be determined from the acoustic characteristics. Petrophysical properties of the rock undergoing drilling may be determined using a petrophysical properties evaluation algorithm employable to predict the petrophysical properties of rock undergoing drilling from the raw acoustic sensor data.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: February 4, 2020
    Assignee: Saudi Arabian Oil Company
    Inventor: Yunlai Yang
  • Patent number: 10530145
    Abstract: In a method and a corresponding device for detecting phase failures in a converter, current regulators of a positive phase sequence system and current regulators of a negative phase sequence system are provided for the current control of the converter, wherein the current regulators of the positive phase sequence system and the current regulators of the negative phase sequence system each have an integrator, resulting, in the case of a network fault, in coupling of the integrators. At least one measured or calculated value is checked by a monitoring unit for a course that is typical of the coupling of the integrators, wherein the monitoring unit generates a fault signal if such a typical course is detected.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: January 7, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Norbert Benesch
  • Patent number: 10496052
    Abstract: Described herein is a neural network-based vector control method for the induction motor. The disclosure includes an approach to implement optimal vector control for an induction motor by using an NN; a NN controller to substitute two decoupled proportional-integral (PI) controllers in current loop; and, a mechanism to train the NN controller by using a Levenberg-Marquardt (LM)+forward accumulation through time (FATT) algorithm.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: December 3, 2019
    Assignee: The Board of Trustees of the University of Alabama
    Inventors: Xingang Fu, Shuhui Li
  • Patent number: 10481968
    Abstract: Provided is an electric machine health monitoring system that includes an electric machine, a data acquisition component, a local transmitter, a communications network, and a remote diagnostic unit that is configured to receive the time sequenced operational information, asset performance, and health status indicators from a local transmitter. The remote computational unit comprises software that is configured to perform diagnostic analysis of time sequenced operational information to determine the asset performance and health status of the electric machines.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: November 19, 2019
    Assignee: GE ENERGY POWER CONVERSION TECHNOLOGY LTD
    Inventors: Luke Solomon, Sergio Dominguez, Michael Doucette, Alexander Sieman
  • Patent number: 10456614
    Abstract: A motorized assist apparatus provides an assist force to user moved weight of a weight training or rehabilitation/therapy exercise machine or stand and includes an assist force delivery assembly with operably connected motor and reel, a flexible assist member on the reel to transmit force from the assembly to a primary load interface (PLI). A main digital controller controls operation of the assembly and a human-machine interface (HMI) accepts input of variable parameters for assist control. In some examples, the PLI is a harness to support a rehabbing person. In some examples, the motor can be a DC servo motor or an AC induction motor. In some examples, the assist assembly has two or more motors connected to drive the reel.
    Type: Grant
    Filed: November 2, 2015
    Date of Patent: October 29, 2019
    Assignee: Omegamax Holding Company, LLC
    Inventors: Leonard A. Dube, Jason D. Griggs, Matthew Cubbler, Glenn R. Siegele
  • Patent number: 10409926
    Abstract: In an embodiment, a data processing method comprises storing one or more generic machine operating definitions, wherein each of the generic machine operating definitions describes expected operational behavior of one or more types of machines during one or more operating states; analyzing operating data that describes past operation of a plurality of machines of a plurality of types; based at least in part on the operating data and the one or more generic machine operating definitions, generating and storing one or more machine operating models that describe expected operational behavior corresponding to a plurality of operating states of the plurality of machines; wherein the one or more machine operating models comprise a plurality of data patterns, wherein each of the data patterns is associated with a different set of one or more operating states of one or more machines; wherein the method is performed by one or more computing devices.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: September 10, 2019
    Assignee: Falkonry Inc.
    Inventors: Nikunj R. Mehta, Prasanta Bose
  • Patent number: 10333390
    Abstract: An example system for controlling a grid-connected energy source using a neural network is described herein. The example system can include a grid-connected converter (“GCC”) operably coupled between an electrical grid and an energy source, a n-order grid filter (e.g., where n is an integer greater than or equal to 2) operably coupled between the electrical grid and the GCC, and a nested-loop controller. The nested-loop controller can have inner and outer control loops and can be operably coupled to the GCC. A d-axis loop can control real power, and a q-axis loop can control reactive power. Additionally, the inner control loop can include a neural network that is configured to optimize dq-control voltages for controlling the GCC. The neural network can account for circuit dynamics of the n-order grid filter while optimizing the dq-control voltages.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: June 25, 2019
    Assignee: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ALABAMA
    Inventors: Shuhui Li, Ishan Jaithwa, Xingang Fu, Raed Suftah
  • Patent number: 10305413
    Abstract: A machine learning device which learns a current command for a motor, the machine learning device including a state observation unit which observes a state variable including a motor rotation speed or a motor torque command of the motor and at least one of a motor torque, a motor current, and a motor voltage of the motor; and a learning unit which learns the current command for the motor based on the state variable.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: May 28, 2019
    Assignee: FANUC CORPORATION
    Inventors: Koudai Akashi, Hidetoshi Uematsu
  • Patent number: 10304189
    Abstract: Methods and systems for analysis of image data generated from various reference points. Particularly, the methods and systems provided are useful for real time analysis of image and sequence data generated during DNA sequencing methodologies.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 28, 2019
    Assignee: Illumina, Inc.
    Inventors: Francisco Garcia, Klaus Maisinger, Stephen Tanner, John Moon, Tobias Mann, Michael Lawrence Parkinson, Anthony James Cox, Haifang H. Ge
  • Patent number: 10240839
    Abstract: An exemplary system includes a compressor, a condenser, an expander, and an evaporator fluidly coupled to form a vapor-compression circuit, and an electric motor configured to drive the compressor. An inverter having a plurality of switching elements is configured to provide an output voltage to the electric motor through operation of the switching elements. A waste heat recovery circuit is configured to transfer waste heat from the inverter to a load. A controller is configured provide switching commands to the switching elements of the inverter. The controller is further configured to sense a condition of the system, determine a heat production requirement based at least in part upon the system condition, and to vary the number of switching commands per unit time based at least in part upon the heat production requirement.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: March 26, 2019
    Assignee: Trane International LLC.
    Inventors: Benjamin James Sykora, Nathan Thomas West, Pavak Mehta
  • Patent number: 10224852
    Abstract: The control device of an induction motor includes a current command maximum value setting portion that sets an excitation current command maximum value and a torque current command maximum value. The current command maximum value setting portion changes, when the induction motor is accelerated/decelerated, the excitation current command maximum value based on which one of first and second excitation current command maximum values is lower, and changes the torque current command maximum value based on the excitation current command maximum value and an allowable maximum current value of a drive portion. The first excitation current command maximum value is based on the allowable maximum current value, and the second excitation current command maximum value is based on a power supply voltage of the drive portion, a current frequency of the drive current and an excitation inductance of the induction motor.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: March 5, 2019
    Assignee: FANUC CORPORATION
    Inventor: Yuuki Morita
  • Patent number: 10148208
    Abstract: The invention relates to a control device for an electric machine with a stator and a rotor, comprising a temperature detection device which is designed to detect the temperature of the stator and the temperature of the rotor, as well as a calculation device which is designed to adjust the operating point of said electric machine on the basis of a specified torque, the detected temperature of the stator, the detected temperature of the rotor, and a predefined thermal load distribution of said stator and rotor. The invention also relates to a vehicle and to a corresponding method for controlling an electric machine.
    Type: Grant
    Filed: August 13, 2015
    Date of Patent: December 4, 2018
    Assignee: Robert Bosch GmbH
    Inventors: Gunther Goetting, Lanouar Chouk
  • Patent number: 10122312
    Abstract: The current embodiments provide a method for controlling an induction machine with a plurality of phases. Each phase may include a plurality of parallel windings and each phase may be associated with a half-bridge. The method may include determining a current in a winding of a first phase. The method may further include determining a phase current on the basis of the current in the winding, and controlling the half-bridge associated with the first phase based on the determined phase current.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: November 6, 2018
    Assignee: ZF Friedrichshafen AG
    Inventors: Hans-Jürgen Hanft, Erich Karg, Alfred Tareilus
  • Patent number: 10107861
    Abstract: A method and an apparatus are disclosed to detect faults in a rotary machine having a rotor and at least two stator windings. The method comprises generating an input signal and applying the input signal to stator windings while the rotor is locked at a rotor position, measuring output signals from the stator windings and processing all the output signals by Fourier transform to obtain frequency responses of the stator windings, forming derived quantities from all the frequency responses so that the derived quantities are independent of the rotor position, comparing the derived quantities with corresponding reference quantities, determining that there is a fault in the rotary machine if a magnitude or phase difference between the derived quantities and the corresponding reference quantities exceeds a threshold number. The apparatus is designed to test a rotary machine using the inventive method.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: October 23, 2018
    Assignee: QSD Solutions LLC
    Inventor: Xiaoyuan Qi
  • Patent number: 9912273
    Abstract: A method for controlling an asynchronous electrical motor, implemented in a processing unit associated with a power converter connected to the electrical motor, the method including an identification phase, which includes generating a speed trajectory in input of a control law of the motor in order to make the speed reference take several determined successive values, for each value taken by the speed reference, determining the voltage at the terminals of the electrical motor, for each value taken by the speed reference, determining and storing the flux value for which the voltage at the terminals of the electrical motor is equal to a determined threshold value.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: March 6, 2018
    Assignee: SCHNEIDER TOSHIBA INVERTER EUROPE SAS
    Inventors: Francois Malrait, Al Kassem Jebai, Thomas Devos
  • Patent number: 9819222
    Abstract: A power control apparatus includes the following elements. A measure measures a value of a current to be supplied from a power supply source to a load set. A switch is disposed on a power supply path from power supply source to a load set. A setter sets a first maximum current value in the case of a normal state in which the load set receives power from a main power supply source and sets a second maximum current value when the load set receives power from the sub power supply source. Control circuitry turns OFF the switch when the value of the measured current exceeds the first maximum current value in the case of the normal state and turns OFF the switch when the load set receives power from the sub power supply source and the value of the measured current exceeds the second maximum current value.
    Type: Grant
    Filed: October 20, 2015
    Date of Patent: November 14, 2017
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takao Yamaguchi, Yoshikazu Mihara, Hiroshi Hanafusa
  • Patent number: 9793888
    Abstract: An output driver circuit includes a control circuit and first and second transistor legs that are coupled to an output pad. Each of the first and second transistor legs includes a pull-up transistor and a pull-down transistor. The control circuit is coupled to the first and second transistor legs. The control circuit enables the first transistor leg to generate an output signal at the output pad and disables the second transistor leg during a first phase of a cycle. The control circuit enables the second transistor leg to generate the output signal at the output pad and disables the first transistor leg during a second phase of the cycle. The control circuit repeats the first and the second phases of the cycle.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: October 17, 2017
    Assignee: Altera Corporation
    Inventors: Tat Hin Tan, Yue-Song He, Choong Kit Wong
  • Patent number: 9735726
    Abstract: An electric motor system having substantially independent hardware-based and software-based pathways for detecting and initiating responses to fault conditions, such as over-current conditions, in an electric motor which is powered by a power inverter which is controlled by a power module and a microprocessor. Each pathway involves comparing a voltage, which is representative of an electric current flowing to the motor, to a predetermined maximum voltage, and if the former exceeds the latter using hardware or software to initiate shutting off the motor, such as by shutting off the power inverter. When one pathway detects a fault condition it may notify the other pathway, and the notified pathway may also initiate shutting off the motor.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: August 15, 2017
    Assignee: Nidec Motor Corporation
    Inventors: Douglas D. Glenn, Christopher D. Schock
  • Patent number: 9717469
    Abstract: According to one embodiment, Switching units are configured to switch the intensity of X-rays to be generated by an anode. An X-ray controller controls the switching units to switch the intensity of the X-rays to be generated by the anode, and controls a rotor control power generator to rotate the anode. When a value approximately equal to an integer multiple of an X-ray intensity switching period designated by a user coincides with the rotor rotation period, the X-ray controller controls the rotor control power generator to shift the thermoelectron collision ranges of the anode in the first turn from thermoelectron collision ranges in the second turn.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: August 1, 2017
    Assignee: Toshiba Medical Systems Corporation
    Inventor: Sanae Harada
  • Patent number: 9625901
    Abstract: A method of monitoring a plurality of turbomachines is disclosed herein. In embodiments, the method includes a fleet data system receiving first event data from a first monitoring connection system and second event data from a second monitoring connection system. The method also includes the fleet data system determining from the first event data and the second event data whether an event has occurred. The method further includes the fleet data system issuing an alert when the fleet data system has determined that the event has occurred, the alert including an event name, an event status, and a timestamp related to when the event occurred.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: April 18, 2017
    Assignee: Solar Turbines Incorporated
    Inventors: Garrett Linn Schiff, Thompson Hoang An Pham, Fabrice Mario Murgia, Neal Watkins, Vijaya Shankar Sadasivan, Ramanath Vasamsetty, Pankaj Yogendra Tiwari, Frances Julia Kemp, Anbarasu Sanjeevi, Andrea Monti, Alessio De Stefano, James Anthony Gilbert, Marco Ezra Leon, Venkatesh Canchi, Paul F Cameron, Joseph Stinson McElhinney, IV, Miguel J Estupinan
  • Patent number: 9479106
    Abstract: In a control apparatus, a target harmonic current obtainer obtains, according to a phase current flowing through at least one phase winding of a stator, a target harmonic current component flowing in a rotary machine. The target harmonic current component is included in a fundamental current component of the phase current. An inducing unit superimposes, on the phase information, a fluctuating signal that changes at an angular velocity identical to an angular velocity of the target harmonic current component, to induce a counteracting harmonic current component in the at least one phase winding. The counteracting harmonic current component counteracts the target harmonic current component.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: October 25, 2016
    Assignee: DENSO CORPORATION
    Inventors: Yasuhiro Nakai, Hajime Uematsu
  • Patent number: 9395421
    Abstract: A circuit fault detection device includes: an interruption-signal generation unit that outputs an interruption signal for a drive circuit stopping driving of a drive target on a basis of the interruption signal; a pulse generation unit that includes an adjustment unit adjusting a time during which a pulse signal is in an OFF state and that generates the pulse signal; a signal synthesis unit that outputs a logical AND of the interruption signal and the pulse signal; a filter circuit that inputs, as an output, a signal obtained by delaying an output signal of the signal synthesis unit to the drive circuit; and a monitoring unit that determines whether a circuit fault has occurred on a basis of an output voltage of the filter circuit.
    Type: Grant
    Filed: December 12, 2012
    Date of Patent: July 19, 2016
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masataka Ieda, Shuya Sano, Masaaki Ono
  • Patent number: 9374031
    Abstract: A control apparatus for an AC motor includes a current sensor and an estimation section. The current sensor detects current flowing through one phase of the motor. The estimation section repeats an estimation process. In the estimation process, d-axis and q-axis current estimation values are calculated based on the presently detected current of the one phase and a previous current estimation value of another phase of the motor, and a present current estimation value of each phase is calculated based on smoothed values of the d-axis and q-axis current estimation values. The estimation section performs the estimation process based on a phase lag element. The phase lag element is a difference between the presently detected current and a previous current estimation value of the one phase or the previously detected current.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: June 21, 2016
    Assignee: DENSO CORPORATION
    Inventors: Takashi Suzuki, Takeshi Itoh, Hirofumi Kako
  • Patent number: 9182134
    Abstract: Provided is an air conditioner including: a heater control section (54) for carrying out duty control on a positive temperature coefficient (PTC) heater (55); and a current detecting section (53) for detecting a current value of the PTC heater (55). The PTC heater (55) starts to be driven at a predetermined duty ratio. When the current value detected by the current detecting section (53) takes a peak (P), a duty ratio increasing process of increasing the duty ratio of the PTC heater (55) by a predetermined amount is repeated until the duty ratio reaches to 100%.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: November 10, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Tohru Ariga
  • Patent number: 9154071
    Abstract: A control apparatus includes an electric current estimation unit to improve a responsiveness of an AC motor. The electric current estimation unit performs, at predetermined intervals, a dq conversion, a correction process, and an inverted dq conversion. The dq conversion calculates d/q axis electric current estimate values based on a detection value of a sensor phase from a sensor, and on an electric current estimate values of two phases of the AC motor other than the sensor phase from a previous cycle. The correction process corrects, during the dq conversion, the d/q axis electric current estimate values in an orthogonal direction that is orthogonal to a sensor phase axis. The inverted dq conversion calculates the electric current estimate values of the two phases other than the sensor phase based on the d/q axis electric current estimate values corrected by the correction process and smoothed by a low-pass filter process.
    Type: Grant
    Filed: April 22, 2013
    Date of Patent: October 6, 2015
    Assignee: DENSO CORPORATION
    Inventors: Takashi Suzuki, Takeshi Itoh, Hirofumi Kako
  • Patent number: 9131559
    Abstract: A heat dissipating method for a light emitting diode is provided. The heat dissipating method includes following steps. Firstly, a circuit board with a light emitting diode formed on one side and a heat dissipating fan formed on the other side is provided. The heat dissipating fan is configured to dissipate heat for the light emitting diode. Secondly, a power source is provided for supplying power for the light emitting diode. Finally, a speed of the heat dissipating fan is adjusted according to an input power of the power source. A lighting device using the heat dissipating method is also provided.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: September 8, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chih-Chen Lai
  • Patent number: 9103344
    Abstract: An immersion pump assembly includes an electric drive motor and a control device (14) for controlling the drive motor, which are configured for dipping into a liquid (18) to be conveyed. An external display device (26) and/or an external communications device are/is configured for arrangement outside the liquid (18) to be conveyed and are/is connected to the control device (14) for signal transmission.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: August 11, 2015
    Assignee: Grundfos Management a/s
    Inventor: Jens Andresen
  • Publication number: 20150130393
    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: Application
    Filed: January 25, 2013
    Publication date: May 14, 2015
    Applicant: Kudom Electronics Technology (Shanghai) Co., Ltd.
    Inventors: Jiantao Yang, Zhiming Zeng, Fangzeng Chen
  • Patent number: 9018970
    Abstract: In a rotating electrical machine, a conductive foil or conductive rubber is applied to the surface of insulation layer of a conductor series connection area or to the surface of insulation layer of a turn conductor of coils of rotating electrical machine winding, waveforms of grounding voltages of the individual turn conductor portions are measured through the medium of an electrostatic capacitance of the insulation layer of coil conductor series connection area or through the medium of the insulation layer of coil turn conductor, and a partial discharge is measured while measuring a voltage developing in the coil or across a winding turn in the coil from a difference between the waveforms of grounding voltages.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: April 28, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Koji Obata, Yutaka Higashimura, Keiji Suzuki
  • Patent number: 8975858
    Abstract: The invention relates to a method for the open-loop or closed-loop control of an asynchronous machine with or without speed feedback, the asynchronous motor being controlled by a control device (converter or servo converter). First of all, a voltage vector rotating at a rotary field frequency is specified and impressed, both the rotary field frequency and the voltage vector being determined by an open-loop or closed-loop control based on a voltage-frequency characteristic curve configured in any manner and the voltage vector being adapted by a cos ? closed-loop control. Desired values of cos ? are calculated using rating plate data and equivalent circuit diagram data for an optimum-loss or loss-optimized operation of the asynchronous machine for the calculation of cos ?desired value, which results in optimized-loss operation. A value for cos ?actual is then determined using the impressed voltage vector and a current vector or using the real power and apparent power.
    Type: Grant
    Filed: September 24, 2010
    Date of Patent: March 10, 2015
    Assignee: Lenze Drives GmbH
    Inventors: Heiko Stichweh, Albert Einhaus, Matthias Wisgickl
  • Publication number: 20150048775
    Abstract: A motor controller is provided with integrated metering and data logger functions to measure, store and report information suitable to verify the controller's energy saving performance. The integrated functions in the controller can be used to establish an AC motor's baseline electrical power and energy profile and to monitor continuously the power and energy reduction performance of the controller without requiring a separate meter and logger.
    Type: Application
    Filed: August 15, 2014
    Publication date: February 19, 2015
    Inventor: Thomas I. Yeh
  • Patent number: 8855841
    Abstract: A method for operating an electric vehicle, the electric vehicle having an electric motor and a brake device, and the electric motor and the brake device being capable of being influenced by a control device. When the electric vehicle is at a standstill, when there is an error of the control device, the brake device is actuated so that the electric vehicle cannot move, or at least can move only to a very limited extent.
    Type: Grant
    Filed: November 16, 2010
    Date of Patent: October 7, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Bernd Doerr, Roland Schleser, Holger Niemann, Markus Kretschmer, Oliver Kaefer, Daniel Damm, Dirk Gollub, Andreas Heyl
  • Patent number: 8773058
    Abstract: A system and method including a runtime thermal model that estimates individual component temperatures, permitting the system to only limit power when necessary or desirable. A power-limiting system for a vector-controlled AC induction motor includes a torque command system for generating a torque command; a thermal protection system determining a runtime estimate for a temperature of a component of a rotational electro-magnetic component of the vector-controlled AC induction motor; and a controller configured to generate a motor control signal for the vector-controlled AC induction motor responsive to the torque command, wherein the thermal protection system determines the runtime estimate responsive to a multi-node thermal model of the vector-controlled AC induction motor, and wherein the controller limits a power of the vector-controlled AC induction motor to maintain a component temperature below its critical temperature.
    Type: Grant
    Filed: July 8, 2011
    Date of Patent: July 8, 2014
    Assignee: Tesla Motors, Inc.
    Inventors: Andrew David Baglino, Greg Grant Solberg, Yifan Tang
  • Patent number: 8764426
    Abstract: A power supplying apparatus for supplying power to servo amplifiers is configured by an AC/DC converter and a predetermined power storage circuit. In a process of a molding cycle except for an injection process, power is supplied from the AC/DC converter, and the power is stored in the power storage circuit. In the injection process, the AC/DC converter and the power storage circuit are controlled in conjunction with each other to supply the stored power, which is required when performing the injection process, from the power storage circuit, so as to prevent the AC/DC converter from supplying an excessive amount of power.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: July 1, 2014
    Assignee: The Japan Steel Works, Ltd.
    Inventor: Kiyoshi Ochi
  • Patent number: 8716968
    Abstract: A control circuit for a blender provides low-cost power conditioning through the use of a high resistance which provides temporary power for operation of low-voltage logic circuitry and low-voltage switches for a time sufficient to switch the motor on, and a lower resistance which provides sufficient power for maintaining the motor on state indefinitely as instructed by the low-voltage logic circuitry. Low average power dissipation is provided by powering the low-voltage logic circuitry and low-voltage switches using the high resistance in a standby mode and switching in the lower resistance only when the motor is activated.
    Type: Grant
    Filed: December 9, 2009
    Date of Patent: May 6, 2014
    Assignee: Illinois Tool Works Inc.
    Inventors: Eric K. Larson, Andy W. Tucker
  • Patent number: 8681457
    Abstract: Relays are inserted and connected between a battery and a boosting converter, and other relays are inserted and connected between another battery and another boosting converter. A controller outputs control signals that control opening/closing of the relays. When short-circuit of a switching element occurs in the boosting converters, the controller controls turning-off of the relays such that at least one of order and timing of turning off the relays is changed depending on which of the switching elements is short-circuited.
    Type: Grant
    Filed: April 23, 2009
    Date of Patent: March 25, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinichiro Minegishi, Masashi Yoshimi
  • Patent number: 8670866
    Abstract: An autonomous floor cleaning robot includes a transport drive and control system arranged for autonomous movement of the robot over a floor for performing cleaning operations. The robot chassis carries a first cleaning zone comprising cleaning elements arranged to suction loose particulates up from the cleaning surface and a second cleaning zone comprising cleaning elements arraigned to apply a cleaning fluid onto the surface and to thereafter collect the cleaning fluid up from the surface after it has been used to clean the surface. The robot chassis carries a supply of cleaning fluid and a waste container for storing waste materials collected up from the cleaning surface.
    Type: Grant
    Filed: February 21, 2006
    Date of Patent: March 11, 2014
    Assignee: iRobot Corporation
    Inventors: Andrew Ziegler, Duane Gilbert, Christopher John Morse, Scott Pratt, Paul Sandin, Nancy Dussault, Andrew Jones
  • Patent number: 8604745
    Abstract: A method for the identification without shaft encoder of magnetomechanical characteristic quantities of a three-phase asynchronous comprising: —constant voltage impression U1? in ? axial direction in order to generate a constant magnetic flux; —test signal voltage supply U1? in ? axial direction of the asynchronous motor, whereby the ? axial direction remains supplied with constant current; —measuring signal current measurement I1? in ? stator axial direction of the asynchronous motor; —identification of mechanical characteristic quantities of the asynchronous motor based on the test signal voltage U1? and on the measuring signal current I1?, whereby the rotor can execute deflection movements. Method can also be used for control of electrical drives. An identification apparatus for the determination of mechanical characteristic quantities of an asynchronous motor and for motor control, whereby the identified characteristic quantities can be used to determine, optimize and monitor a motor control.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: December 10, 2013
    Assignee: Baumuller Nurnberg GmbH
    Inventors: Sebastian Villwock, Heiko Zatocil
  • Patent number: 8605393
    Abstract: A compressor monitoring system includes current and voltage monitors, current and voltage averaging modules, a control module, and a switch. The current monitor measures a current drawn by a motor of a compressor. The current averaging module generates first and second average current values based on the current measured by the current monitor. The voltage monitor measures a utility power voltage. The voltage averaging module generates first and second average voltage values based on the voltage measured by the voltage monitor. The control module selectively generates a fault signal when a first ratio is greater than a first predetermined threshold and a second ratio is less than a second predetermined threshold. The first ratio is based on the first and second average current values. The second ratio is based on the first and second average voltage values. The switch deactivates the motor when the fault signal is generated.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: December 10, 2013
    Assignee: Emerson Climate Technologies, Inc.
    Inventors: Nagaraj B. Jayanth, George Ramayya
  • Patent number: 8587250
    Abstract: A method for the identification without a shaft encoder of magnetomechanical characteristic quantities, in particular the mass moment of inertia J and the permanent magnetic flux ?PM between rotor and stator of a three-phase synchronous motor, comprising:—constant voltage supply U1d in the d flux axial direction;—test signal voltage supply U1q in the q transverse flux axial direction;—measuring signal current measuring I1q of the q transverse flux axial direction;—identification of magnetomechanical characteristic quantities of the synchronous motor on the basis of the test signal voltage U1q and of the measuring signal current I1q; whereby the rotor can execute deflection movements with pre-definable maximal amplitudes. Method use also for control of electrical drives.
    Type: Grant
    Filed: August 9, 2011
    Date of Patent: November 19, 2013
    Assignee: Baumuller Nurnberg GmbH
    Inventors: Sebastian Villwock, Heiko Zatocil
  • Publication number: 20130271061
    Abstract: The invention relates to a method for the open-loop or closed-loop control of an asynchronous machine with or without speed feedback, the asynchronous motor being controlled by a control device (converter or servo converter). First of all, a voltage vector rotating at a rotary field frequency is specified and impressed, both the rotary field frequency and the voltage vector being determined by an open-loop or closed-loop control based on a voltage-frequency characteristic curve configured in any manner and the voltage vector being adapted by a cos ? closed-loop control. Desired values of cos ? are calculated using rating plate data and equivalent circuit diagram data for an optimum-loss or loss-optimised operation of the asynchronous machine for the calculation of cos ?desired value, which results in optimised-loss operation. A value for cos ?actual is then determined using the impressed voltage vector and a current vector or using the real power and apparent power.
    Type: Application
    Filed: September 24, 2010
    Publication date: October 17, 2013
    Applicant: LENZE DRIVES GMBH
    Inventors: Heiko Stichweh, Albert Einhaus, Matthias Wisgickl
  • Patent number: 8536811
    Abstract: A mechanism for a motor controller for engaging a spinning motor is provided. A power section is configured to provide power to the motor. A control is configured to control the power section. The control is configured to search for a motor frequency of the motor by applying a small excitation voltage to the motor, and the excitation voltage is initially applied at a voltage frequency which is a maximum frequency. The control is configured to track the motor frequency until the motor frequency is below an equivalent speed command and engage the motor by applying a higher voltage to the motor.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: September 17, 2013
    Assignee: Hamilton Sundstrand Corporation
    Inventors: James J. Wrobel, Gary L. Miles
  • Patent number: 8502491
    Abstract: A rotation direction control method of a cooling fan is disclosed. The rotation direction control method includes a detection step, a determination step and a driving step. The detection step receives a temperature control signal from a temperature detection unit by a rotation direction control unit when a predetermined dust-expelling time period begins. The determination step determines whether a detected temperature is higher than a predetermined value based on the temperature control signal by the rotation direction control unit. The driving step controls the rotation direction control unit to keep outputting a cooling signal so as to drive a motor of the cooling fan for a cooling operation when the determination of the determination step is positive.
    Type: Grant
    Filed: December 10, 2010
    Date of Patent: August 6, 2013
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Alex Horng, Ching-Sheng Hung