公开(公告)号：US20250038685A1

公开(公告)日：2025-01-30

申请号：US18917326

申请日：2024-10-16

Applicant: C.R. Laurence Co., Inc.

Inventor： Gary Sprague

IPC: H02P21/00 ,  H02P21/18 ,  H02P21/22 ,  H02P27/08

Abstract: An improved base shoe for use with panel installation and removal systems. The improved base shoe includes dovetail grooves for use with a safety-seal and a weather seal, wherein the safety-seal and weather seal must be installed prior to installing a glass panel. The improved base shoe features a recess for use with taper plates having a continuous projection along an upper surface. The base shoe and taper plates are configured so as to provide a prying surface between the projection on the taper plates and a wall of the base shoe.

公开(公告)号：US20250030363A1

公开(公告)日：2025-01-23

申请号：US18907735

申请日：2024-10-07

Applicant: ROHM CO., LTD.

Inventor： Takahiro NISHIYAMA

IPC: H02P21/22 ,  H02P21/00

Abstract: A motor control unit (10) includes, for example, a motor control block (11) that performs feedback control of a drive current that flows through a motor (20) and a machine learning block (14) that analyzes input data including at least the drive current so as to detect a failure level of the motor (20). The motor control block (11) could be configured to dynamically switch a control parameter or a control method in accordance with the failure level. The input data may further include, for example, a drive voltage applied to the motor (20). Furthermore, the input data may further include, for example, at least one of vibrations and a temperature of the motor (20) or a motor device (1) mounting the motor (20) therein.

公开(公告)号：US12199531B2

公开(公告)日：2025-01-14

申请号：US17924904

申请日：2021-05-06

Applicant: Synapticon GmbH

Inventor： Florian Kock ,  Peyman Salehi Arashloo

IPC: H02P21/22 ,  H02P21/00

Abstract: The invention relates to a motor control device for controlling a motor current, with a predictive deadbeat control unit configured to, based on a motor current error input signal, use a model predictive control scheme for providing an output signal for controlling the motor current according to a deadbeat control scheme, where the deadbeat control scheme is characterized by minimizing the motor current error input signal within a preset time period; an interface unit configured to allow adjusting the preset time period by a user input; and an integrator unit configured to, based on the motor current error input signal, provide an integrator output that is added to the output signal for controlling the motor current with controlling a motor current, with the advantages of a predictive deadbeat control scheme while avoiding the problems present in the conventional predictive deadbeat approaches. The invention also relates to a corresponding method.

公开(公告)号：US12155325B2

公开(公告)日：2024-11-26

申请号：US17916233

申请日：2021-03-26

Applicant: Rohm Co., Ltd.

Inventor： Takahiro Nishiyama

IPC: H02P21/22 ,  H02P21/00

Abstract: A motor control unit (10) includes, for example, a motor control block (11) that performs feedback control of a drive current that flows through a motor (20) and a machine learning block (14) that analyzes input data including at least the drive current so as to detect a failure level of the motor (20). The motor control block (11) could be configured to dynamically switch a control parameter or a control method in accordance with the failure level. The input data may further include, for example, a drive voltage applied to the motor (20). Furthermore, the input data may further include, for example, at least one of vibrations and a temperature of the motor (20) or a motor device (1) mounting the motor (20) therein.

公开(公告)号：US12143037B2

公开(公告)日：2024-11-12

申请号：US17525820

申请日：2021-11-12

Applicant: Baker Hughes Oilfield Operations, LLC

Inventor： Aider Matarrita Sequeira

IPC: H02P21/00 ,  E21B41/00 ,  E21B43/12 ,  F04D13/10 ,  H02P23/14

Abstract: Systems and methods for adjusting the power provided by an electric drive system to an ESP motor through an electrical network based on a model of the system and real-time inputs indicating operating conditions of the system. Some embodiments use a field oriented control system to adjust a direct-axis current setting to generate output power signals which drives the motor at a desired operating point for optimized performance. The electrical network may include a filter, a transformer, and a transmission line. A drive controller may receive real-time operating conditions and motor parameters as input, and may select further system parameters based on the received parameters. The controller builds a model of the electrical network and generates adjustments to the power generated by the drive using the system model and received real-time input. The adjustments may be recalculated at scheduled intervals.

公开(公告)号：US12126285B2

公开(公告)日：2024-10-22

申请号：US18243935

申请日：2023-09-08

Applicant: KINETIC TECHNOLOGIES INTERNATIONAL HOLDINGS LP

Inventor： Kwei Chung Li

IPC: H02P21/00 ,  H02P21/22 ,  H02P27/08 ,  H02P21/18

CPC classification number: H02P21/22 ,  H02P27/08 ,  H02P21/18

Abstract: Described is a method of determining a speed of a synchronous motor having a rotor and a stator having windings. The method comprises sensing currents in the windings of the stator while the rotor is rotating and transforming the currents into a two-dimensional (2D) coordinate system using an alpha-beta (α-β) transformation, wherein the alpha-beta (α-β) transformation is a Clarke transformation, the 2D coordinate system having an α-axis and a β-axis. The method includes determining a rotor angle θ from an arc tangent (A tan) of a ratio of a current iα in the α-axis to a current iβ in the β-axis and determining a speed of the motor from the rotor angle θ.

公开(公告)号：US12119778B2

公开(公告)日：2024-10-15

申请号：US17308929

申请日：2021-05-05

Applicant: TIANJIN UNIVERSITY

Inventor： Jiebei Zhu ,  Zhaoshun Deng ,  Feng Li

IPC: H02P9/10 ,  F03D9/25 ,  H02J3/00 ,  H02P9/00 ,  H02P21/00 ,  H02P101/15

CPC classification number: H02P9/10 ,  F03D9/25 ,  H02J3/00 ,  H02P9/00 ,  H02P21/00 ,  F05B2270/32 ,  H02P2101/15

Abstract: The present invention discloses a FPR system of DFIG, comprising a DC chopper circuit made up of a fully-controlled power switching device and a dump resistor first connected in series and then connected to the positive and negative poles of the DC-link; the fully-controlled power switching device is driven by a power switching device driver; the power switching device driver comprises a first inverting adder, a first PI controller and a PWM modem; the positive and negative input ends of the first inverting adder receive the real-time DC-link voltage signal and its threshold value respectively, and the output end of the first inverting adder is connected to the input end of the first PI controller; the output end of the first PI controller is connected to the input end of the PWM modem; the PWM modem outputs the pulse signal to the control end of the fully-controlled power switching device.

公开(公告)号：US20240322723A1

公开(公告)日：2024-09-26

申请号：US18356334

申请日：2023-07-21

Applicant: Hamilton Sundstrand Corporation

Inventor： Anil Prasad Josyula ,  Ashish Vijay ,  Vipul Kohli ,  David Frederick Brookes

IPC: H02P21/22 ,  H02P21/00 ,  H02P21/18

CPC classification number: H02P21/22 ,  H02P21/001 ,  H02P21/18

Abstract: A hoist application system is provided. The hoist application system includes a motor drive unit, which is receptive of a final duty command and which drives a motor in accordance with the final duty command, a closed-loop control unit configured to generate a closed-loop duty command, an open-loop control unit configured to generate an open-loop duty command and a switch logic unit. The switch logic unit is receptive of direct current (DC) system information, the closed-loop duty command and the open-loop duty command, and is configured to generate the final duty command from one of the closed-loop duty command and the open-loop duty command based on the DC system information.

公开(公告)号：US12088223B2

公开(公告)日：2024-09-10

申请号：US16921865

申请日：2020-07-06

Applicant: Tektronix, Inc.

Inventor： U N Vasudev ,  Krishna N H Sri ,  Vempati L. Bharghavi ,  Omer Sheikh

IPC: H02P21/00 ,  H02P27/06

CPC classification number: H02P21/0003 ,  H02P27/06

Abstract: A test and measurement device includes an interface configured to acquire analog three-phase signals from a device under test, and a processor programmed to execute instructions that cause the processor to perform a direct-quadrature-zero, DQ0, transformation and produce DQ0 signals based on the analog three-phase signals, and measure performance of the device under test based on the DQ0 signals. A method includes acquiring three-phase signals from a device under test, performing a direct-quadrature-zero, DQ0, transformation on the three-phase signals to produce DQ0 signals, and using the DQ0 signals to measure performance of the device under test.

公开(公告)号：US20240291415A1

公开(公告)日：2024-08-29

申请号：US18173236

申请日：2023-02-23

Applicant: Allegro MicroSystems, LLC

Inventor： Serhii Korol ,  Anton Babushkin ,  Dmytro Sakharov ,  Oleksii Dudnyk

IPC: H02P27/08 ,  H02P21/00 ,  H02P21/22 ,  H02P21/34

CPC classification number: H02P27/08 ,  H02P21/22 ,  H02P21/34 ,  H02P21/50

Abstract: Methods and apparatus for controlling a three-phase electric motor by determining a duration of current measurement windows within a first pulse width modulation period for measuring motor current using a single shunt coupled to the motor. A duration of a first one of the current measurement windows can be adjusted by a time delta value to meet a minimum time to measure the motor current. A next PWM period can include compensation for the time delta value. In embodiments window adjustments are made by modifying the high state of a middle phase signal for phase signals to switches that energize the motor.