Patents Examined by Eduardo Colon Santana
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Patent number: 11563389Abstract: The invention relates to a method (19) for starting an electric single-phase induction motor (1), wherein during a start-up interval of the start-up cycle for starting said electric motor (1), the frequency (fref) of the electric current for driving said electric motor (1) is set to a first frequency (fstart), and later to the operating frequency (frun) of the electric motor (1), wherein the first frequency (fstart) is higher than the operating frequency (frun).Type: GrantFiled: July 30, 2010Date of Patent: January 24, 2023Assignees: Danfoss Customised Power Electronics, Sta-Rite Industries Inc.Inventors: Torben Damsgaard, Robert Ehmsen, Florin Lungeanu, Rasmus Fink, Lars Berthelsen, Melissa Drechsel Kidd, William James Genaw, Micheal Robert Pasche, Gary Thomas Baase, II
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Patent number: 11552589Abstract: A method for dissipating power of an automotive electric drive system that includes a traction battery, and an inverter, wherein the inverter includes a DC bus between, and a dissipation circuit between the traction battery and DC bus, wherein the dissipation circuit includes a plurality of resistors connected in series between positive and negative terminals of the DC bus and a dissipation resistor and switch connected in series between the positive and negative terminals, the method includes responsive to a voltage across one of the plurality of resistors being less than a threshold value, deactivating the switch to prevent current flow from the positive terminal to the negative terminal through the dissipation resistor, and responsive to the voltage exceeding the threshold value, activating the switch to permit current flow from the positive terminal to the negative terminal through the dissipation resistor.Type: GrantFiled: December 10, 2019Date of Patent: January 10, 2023Assignee: Ford Global Technologies, LLCInventor: Miao Wang
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Patent number: 11489421Abstract: A secondary part provides a magnetic path for a primary part of a linear motor and includes a spacer element as well as yoke plates forming two limbs, which are arranged for an attachment to the spacer element so that—situated opposite each other—they extend in planes parallel to the magnetic path. In addition, the secondary part includes a plurality of permanent magnets, which are fixed in place on inner sides of the yoke plates pointing toward the magnetic path. The permanent magnets each have a width that decreases in an extension direction perpendicular to the magnetic path.Type: GrantFiled: December 11, 2019Date of Patent: November 1, 2022Assignee: ETEL S.A.Inventors: Sylwia Szczukiewicz, Loïc Moreno
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Patent number: 11482951Abstract: The brake driving control circuit, which controls an electromagnetic brake that releases the brake by applying a current, is provided with: a first rectifying element provided between a first power supply of a first circuit voltage and one terminal of the electromagnetic brake; a cut-off switch inserted into a line through which the first power supply supplies power; a first switching element provided between the other terminal of the electromagnetic brake and a ground point; and a second switching element and a second rectifying element provided in series between a second power supply of a second circuit voltage, which is different from the first circuit voltage, and the one terminal of the electromagnetic brake.Type: GrantFiled: December 4, 2018Date of Patent: October 25, 2022Assignee: NIDEC CORPORATIONInventor: Hideyuki Odagiri
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Patent number: 11465511Abstract: A vehicle includes a multi-core processor having first, second, and cores and having first and second analog-to-digital converters (ADC) associated with the first and second cores, respectively. The first and second ADC are configured to convert analog phase currents to first and second digital phase current values, respectively. The multi-core processor is configured to generate first and second rotor-angle data from digital signals representing a position of the electric machine. The processor is programmed to, via the first core, estimate a first output torque of the electric machine based on the first rotor-angle data and the first digital phase current values, via the second core, estimate a second output torque based on the second rotor-angle data and the second digital phase current values, and, via the third core, command de-activation of the electric machine in response to a difference between the first and second output torques exceeding a threshold.Type: GrantFiled: January 14, 2020Date of Patent: October 11, 2022Assignee: Ford Global Technologies, LLCInventors: John Proietty, Susan Rebecca Cikanek, Bader M. Badreddine, William Reynolds, Matthew Allan Herrmann
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Patent number: 11458932Abstract: A sensor assembly includes a cylindrical sensor window defining an axis, and an annular member coupled to the sensor window and rotatable about the axis. The annular member includes a nozzle aimed at the sensor window and oriented at an acute angle from a radial direction toward the axis in a plane orthogonal to the axis.Type: GrantFiled: December 18, 2017Date of Patent: October 4, 2022Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Dhaval P. Vaishnav, Yi-Hsin Yen, Syed K. Ali, Andre Sykula, Venkatesh Krishnan
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Patent number: 11418140Abstract: An induction motor controller is provided. The induction motor controller includes a first module that derives a commanded stator voltage vector, in a rotor flux reference frame, via a rotor flux regulator loop and a torque regulator loop, which process at least partially in the rotor flux reference frame. The induction motor controller includes a second module that processes the commanded stator voltage vector to produce AC (alternating current) power for an induction motor.Type: GrantFiled: February 28, 2014Date of Patent: August 16, 2022Assignee: Atieva, Inc.Inventor: Yifan Tang
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Patent number: 11387763Abstract: A method of controlling an electric motor includes determining a PWM control signal, analyzing the PWM control signal to determine if components of the PWM signal are within a threshold amount of each other, applying duty-cycle blanking to the PWM control signal, if the components of the PWM control signal are within the threshold amount of each other, to generate an adjusted PWM control signal, and controlling the electric motor with the adjusted the PWM signal to limit parasitic effects.Type: GrantFiled: October 31, 2017Date of Patent: July 12, 2022Assignee: Eaton Intelligent Power LimitedInventors: Sayeed A. Mir, John D. Neely, Stanley L. Seely, John M. White
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Patent number: 11356045Abstract: A double virtual voltage vectors predictive torque control method without weighting factor for five-phase permanent magnet synchronous motor includes: obtaining the current component in the two-phase stationary coordinate system and the outputting voltage at k interval; one step delay compensation is performed to obtain the current component in the two-phase stationary coordinate system at k+1 interval; predicting the flux and torque of motor at k+1 interval; calculating the reference voltage vector needed by the motor at k+1 interval according to the deadbeat principle and selecting the first virtual voltage vector; selecting the second virtual voltage vector according to the voltage error tracking principle and calculating the duration of the first virtual voltage vector and the second virtual voltage vector respectively and then synthesizing the two vectors and outputting.Type: GrantFiled: April 28, 2020Date of Patent: June 7, 2022Assignee: JIANGSU UNIVERSITYInventors: Wenxiang Zhao, Huanan Wang, Tao Tao, Dezhi Xu
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Patent number: 11329589Abstract: A mining machine including a motor, an adjustable speed drive providing a voltage to the motor, the voltage having an excitation component comprising a magnitude and a frequency for operating the motor at a desired speed and including an additional voltage component for use in detecting a ground fault condition, and a ground fault relay for detecting a ground fault current when the ground fault current exceeds a predetermined threshold.Type: GrantFiled: March 15, 2013Date of Patent: May 10, 2022Assignee: Joy Global Underground Mining LLCInventors: Peter M. Dalton, Michael Jordan
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Patent number: 11296634Abstract: A method and system for sensorless determination of the orientation of the rotor of an ironless PMSM motor from a known rotor angle is described. The method and system include: specifying a rotor system according to the rotor angle; applying voltage pulses to the phases of the motor in the torque-forming direction of the rotor system; measuring the current in the phases of the motor; determining the expected back EMF along the flux-forming axis, based on the measured current; forming an integral of the expected back EMF by time integration of the expected back EMF along the flux-forming axis and/or a filter-based accumulation function; and determining the orientation of the rotor from the algebraic sign of the integral of the expected back EMF and/or the accumulation function.Type: GrantFiled: August 21, 2017Date of Patent: April 5, 2022Assignee: MAXON INTERNATIONL AGInventors: Damian Frick, Sébastien Mariéthoz, Marko Tanaskovic, David Lehmann
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Patent number: 11296639Abstract: The present invention relates to an inverter which is capable of adjusting an output frequency of a three-phase voltage output to a motor based on a result of comparison in magnitude between the minimum operating voltage of the motor and a DC link voltage applied to a DC link. The inverter includes: a measurement part configured to measure a DC link voltage applied to a DC link; a conversion part configured to convert the DC link voltage into a three-phase voltage and output the three-phase voltage to the motor; and a control part configured to make comparison in magnitude between the DC link voltage and the minimum operating voltage of the motor and adjust an output frequency of the three-phase voltage based on a result of the comparison.Type: GrantFiled: December 20, 2016Date of Patent: April 5, 2022Assignee: LSIS CO., LTD.Inventor: Hyo-Jin Kim
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Patent number: 11256228Abstract: An electronic device has a method capable of automatically executing angle rotation. A second body is rotatably connected to a first body of the electronic device. A hinge mechanism is disposed between the first body and the second body. The hinge mechanism includes a hinge component, a motor unit, a coupling component and an angle detecting unit. The first body and the second body are connected to the hinge component. The motor unit is electrically connected to a controller of the electronic device. The coupling component is connected between the hinge component and the motor unit. The angle detecting unit is connected to the hinge component or the coupling component to read its rotary angle. The controller drives the motor unit to rotate the hinge component via the coupling component, and the second body can be moved relative to the first body and be fixed at a predetermined position.Type: GrantFiled: January 23, 2017Date of Patent: February 22, 2022Assignee: Wistron CorporationInventors: Chen-Yi Liang, Cheng-Wei Chang, Che-Wen Liu
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Patent number: 11239785Abstract: A vehicle includes an electric machine with two sets of galvanically isolated windings, first and second inverters, a switching arrangement, and a controller. During charge, the controller operates the switching arrangement to isolate the first inverter from the electric machine to permit charge current to flow through one of the sets and induce a voltage in the other of the sets. During propulsion, the controller operates the switching arrangement to couple the first inverter with the one of the sets such that the first and second inverters are configured to only power one of the sets.Type: GrantFiled: November 2, 2017Date of Patent: February 1, 2022Assignee: Ford Global Technologies, LLCInventors: Ali Najmabadi, Hadi Malek
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Patent number: 11223313Abstract: A device according to an embodiment includes an inverter main circuit; a detector configured to detect a current of an output line of the inverter main circuit; a starting time controller comprising a rotational phase angle estimator configured to calculate, based on a current response value detected by the detector, a value corresponding to a rotational phase angle of a motor connected to the inverter main circuit in a stationary reference frame, and a rotational speed estimator configured to calculate a value corresponding to a rotational speed of the motor by using the value corresponding to the rotational phase angle when the inverter main circuit is started; and a regular time controller configured to calculate, with the value corresponding to the rotational speed as an initial value, an estimated rotational phase angle of the motor in a rotating reference frame.Type: GrantFiled: March 27, 2019Date of Patent: January 11, 2022Assignees: Toshiba Infrastructure Systems & Solutions Corporation, Toshiba Industrial Products and Systems CorporationInventors: Shun Taniguchi, Kazuya Yasui, Tomoaki Shigeta
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Patent number: 11218102Abstract: In a method for determining the rotor position of a three-phase machine without using a rotary encoder, and a device for controlling a three-phase motor without using a rotary encoder, the three-phase machine is fed by a converter that can be operated by pulse-width modulation, and the converter has model variables for the rotor angle and the current indicator of the three-phase machine, and the converter has device(s) by using which, in control operation, at least two values are measured which represent a measure of the local inductances of the machine which represent a measure of the local inductances of the machine, the error of the model rotor angle is determined in that, depending on the model rotor angle and the model current indicator, at least two weighting factors are determined, and in that a weighted sum is formed from the at least two measured values and the at least two weighting factors, and in that a further offset value is subtracted from the sum, which is likewise determined on the basis of tType: GrantFiled: December 11, 2018Date of Patent: January 4, 2022Assignee: SEW-EURODRIVE GMBH & CO. KGInventors: Wolfgang Hammel, Harald Wolf
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Patent number: 11205985Abstract: A load control device may control power delivered from a power source, such as an alternating-current (AC) power source, to at least two electrical loads, such as a lighting load and a motor load. The load control device may include multiple load control circuit, such as a dimmer circuit and a motor drive circuit, for controlling the power delivered to the lighting load and the motor load, respectively. The load control device may adjust the rotational speed of the motor load in a manner so as to minimize acoustic noise generated by the load control device and reduce the amount of time required to adjust the rotational speed of the motor load. The load control device may remain powered when one of the electrical loads (e.g., the lighting load) has been removed (e.g., electrically disconnected or uninstalled) and/or has failed in an open state (has “burnt out” or “blown out”).Type: GrantFiled: August 24, 2020Date of Patent: December 21, 2021Assignee: Lutron Technology Company LLCInventors: James P. Steiner, Dinesh Sundara Moorthy
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Patent number: 11177648Abstract: A compact motor control system for selectively controlling power from a power source to a load includes a motor switching assembly having a solid state contactor with a plurality of solid state switches. The motor switching assembly also includes at least one direct current (DC) link coupled to the solid state contactor and redundant first and second inverters coupled to the at least one DC link. The motor switching assembly further includes a first relay coupled between the solid state contactor and an input of the inverter and a second relay coupled between the solid state contactor and an input of the second inverter. In addition, the motor control system includes a control system programmed to control the motor switching assembly to selectively supply power to the load from the power source.Type: GrantFiled: December 26, 2017Date of Patent: November 16, 2021Assignee: Eaton Intelligent Power LimitedInventors: Huaqiang Li, Joseph Paul Uphaus
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Patent number: 11139649Abstract: A motor control system includes a motor switching assembly comprising a power converter positioned on a converter path, a first relay positioned on the converter path upstream of the power converter, a second relay positioned on a bypass path that is in parallel with the converter path, and a solid-state switching unit positioned upstream from the converter path and the bypass path. The motor control system also includes a control system that controls operation of the motor switching assembly, with the control system programmed to operate the solid-state switching unit in one of a conducting mode, a non-conducting mode, and a ramping mode, so as to selectively control and condition power flow therethrough. The control system is also programmed to control switching of the first and second relays between open and closed positions to selectively route power along the converter path or the bypass path.Type: GrantFiled: December 26, 2017Date of Patent: October 5, 2021Assignee: Eaton Intelligent Power LimitedInventors: Huaqiang Li, Joseph Paul Uphaus
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Patent number: 11133796Abstract: A vehicle includes an electric machine, an IGBT, and a gate driver. The IGBT has a gate, an emitter, and a collector and is configured to flow an electric charge through a phase of the electric machine. The gate driver is configured to flow current onto the gate at a first level, and in response to a time integral of a voltage across the phase exceeding a predetermined level, transition from the first level to a second level less than the first level.Type: GrantFiled: March 11, 2016Date of Patent: September 28, 2021Assignee: Ford Global Technologies, LLCInventors: Zhuxian Xu, Chingchi Chen, Ke Zou, Xi Lu, Michael W. Degner, Jun Kikuchi