公开(公告)号：US12132360B2

公开(公告)日：2024-10-29

申请号：US17894281

申请日：2022-08-24

申请人： MAKITA CORPORATION

发明人： Itsuku Kato

IPC分类号： H02P1/00 ,  A01G20/47 ,  H02J7/00 ,  H02K11/33 ,  H02P3/00 ,  H02P5/00 ,  H02P6/08 ,  H02P6/20 ,  H02P6/24

CPC分类号： H02K11/33 ,  A01G20/47 ,  H02J7/0024 ,  H02J7/0044 ,  H02J7/0045 ,  H02P6/08 ,  H02P6/20 ,  H02P6/24

摘要： An electric work machine includes a motor, a first connector, a second connector, an energizing circuit, a manual switch, and a controller. The controller electrically disconnects the first connector from the motor based on a first voltage value below a first threshold at a start of motor rotation. The controller maintains an electrical connection of the first connector to the motor based on the first voltage value below the first threshold and equal to or greater than a second threshold during discharge of the first battery.

公开(公告)号：US12054055B2

公开(公告)日：2024-08-06

申请号：US17957165

申请日：2022-09-30

申请人： Caterpillar Inc.

发明人： Ryan P. McEnaney ,  Kareem Gad ,  Omar Baba ,  James K. McCloskey

IPC分类号： H02P1/00 ,  B60L3/00 ,  B60L50/60 ,  H02J7/00 ,  H02P3/00 ,  H02P5/00

CPC分类号： B60L3/0084 ,  B60L50/60 ,  H02J7/0063

摘要： An electrical system for providing electrical power to an electric machine, where the electrical system includes a single point disconnect switch for multiple battery systems. The single point disconnect switch may be remotely mounted. In some examples, operation of the disconnect switch disconnects a first battery system, e.g., a 12 VDC nominal battery system, which, in turn, causes a disconnection of a second battery system, e.g., a 48 VDC nominal battery system.

公开(公告)号：US11876469B2

公开(公告)日：2024-01-16

申请号：US17846655

申请日：2022-06-22

申请人： Hyundai Motor Company ,  Kia Corporation ,  Seoul National University R&DB Foundation

发明人： Kang Ho Jeong ,  Sang Cheol Shin ,  Jung Ik Ha ,  Hyeon Gyu Choi ,  Jae Hoon Sim

IPC分类号： H02K33/00 ,  H02P1/00 ,  H02P3/00 ,  H02P5/00 ,  H02P27/08 ,  H02P21/22

CPC分类号： H02P27/08 ,  H02P21/22

摘要： A motor driving apparatus which drives a motor including a plurality of windings corresponding to a plurality of phases, respectively, includes: a first inverter including a plurality of first switching elements and connected to a first end of each of the windings; a second inverter including a plurality of second switching elements and connected to a second end of each of the windings; and a controller obtaining a vector corresponding to a voltage command of the motor by combining switching vectors which cause difference between a common mode voltage of the first inverter and a common mode voltage of the second inverter to be zero and configured to control the plurality of first switching elements and the plurality of second switching elements in a pulse width modulation method based on the obtained vector.

公开(公告)号：US11863093B2

公开(公告)日：2024-01-02

申请号：US17761657

申请日：2020-08-20

申请人： Nidec Corporation

发明人： Tomohiro Fukumura ,  Linfeng Lan

IPC分类号： H02P1/04 ,  H02P5/00 ,  H02P7/00 ,  H02P23/14 ,  H02P29/66 ,  B60L15/20 ,  B62D5/04

CPC分类号： H02P23/14 ,  H02P29/66 ,  B60L15/20 ,  B62D5/046

摘要： A first torque estimator determines a first torque estimation value according to a cross product method, and a second torque estimator determines a second torque estimation value according to an energy method. A torque weight adjuster adjusts, using a weighting coefficient calculated in accordance with a predetermined condition, weightings respectively applied to these two types of torque estimation values, and outputs a torque estimation value.

公开(公告)号：US20230344371A1

公开(公告)日：2023-10-26

申请号：US18139676

申请日：2023-04-26

申请人： SAMSUNG DISPLAY CO., LTD.

发明人： Sungjoon PARK ,  Sungshin KWAK ,  Minkyu KIM ,  Hongju MUN

IPC分类号： H02P5/00 ,  G05B19/4155

CPC分类号： H02P5/00 ,  G05B19/4155 ,  G05B2219/43196

摘要： A motor position control system includes a central server including first information of a first display device and second information of a second display device, and a motor position control device which controls positions of the plurality of motors, where the motor position control device includes a controller which receives the first and the second information from the central server and store the first and the second information in a memory, controls the positions of the plurality of motors based on the first information, calculates at least one value based on the first and the second information, selects at least some motors based on the at least one value, and controls positions of the at least some motors based on the at least one value.

公开(公告)号：US11693368B2

公开(公告)日：2023-07-04

申请号：US16716577

申请日：2019-12-17

申请人： Seiko Epson Corporation

发明人： Takashi Kawaguchi

IPC分类号： H02P25/064 ,  H02P5/00 ,  G04C3/14 ,  H02P6/04 ,  H02P6/182

CPC分类号： G04C3/143 ,  G04C3/146 ,  H02P6/04 ,  H02P6/182 ,  H02P2006/045

摘要： Provided is an electronic timepiece capable of suppressing variation in the drive speed of a rotor, and driving a motor at a constant speed. The electronic timepiece has a driver; a controller that controls the driver to the on state or the off state according to a current flowing through a coil of a motor; a detection signal output device configured to output a detection signal when the on time or the off time, which are the continuous time of the on state and off state of the driver, meets a specific condition; a reference signal output device that outputs a reference signal used as a reference of a drive speed of the motor; and a drive cycle adjuster that compares the output timing of the detection signal and the reference signal, shortens the drive cycle when the detection signal is output after the reference signal, and when the detection signal is output before the reference signal, lengthens the drive cycle of the motor.

公开(公告)号：US20230195132A1

公开(公告)日：2023-06-22

申请号：US17926065

申请日：2020-05-29

申请人： Nippon Telegraph and Telephone Corporation

发明人： Shoji Mochizuki ,  Masayuki Tsuda

IPC分类号： G05D1/02 ,  G01S13/88 ,  G01S7/02 ,  H02P5/00

CPC分类号： G05D1/0268 ,  G01S7/027 ,  G01S13/885 ,  G05D1/027 ,  G05D1/0223 ,  G05D1/0272 ,  H02P5/00

摘要： An underground exploration apparatus 100 that explores underground using electromagnetic waves includes a radar unit 1 for underground exploration including an antenna and a transceiver, three omni-directional movement type wheels 2a to 2c that are rotatably fixed to three wheel shafts arranged at 120 degrees intervals and can move the underground exploration apparatus in any direction by changing rotation directions and rotation speeds of the three wheels, three motors 3a to 3c that rotate the three wheels 2a to 2c in predetermined directions at predetermined speeds, a terminal 10 that controls the radar unit 1 and the three motors 3a to 3c. The terminal 10 includes a calculation unit 23 that calculates an external force applied to the underground exploration apparatus 100 using measurement data measured by three encoders 4a to 4c, three torque sensors 5a to 5c, an acceleration sensor 6, and a gyroscopic sensor 7, and a first control unit 26 that rotates the three motors 3a to 3c according to the external force.

公开(公告)号：US20220352832A1

公开(公告)日：2022-11-03

申请号：US17869623

申请日：2022-07-20

申请人： DELTA ELECTRONICS, INC.

发明人： Kuo-Ying LEE ,  Feng-Ying LIN ,  Meng-Yu CHEN ,  Chia-Ching TSAI

IPC分类号： H02P5/50 ,  H02P5/00

摘要： A plural-fans driving apparatus is provided to drive a first fan and a second fan, and the first fan and the second fan are three-phase fans. The plural-fans driving apparatus includes a controller, a first three-phase motor driver structure, a second three-phase motor driver structure, and a protection and input interface circuit. The protection and input interface circuit is coupled to the first three-phase motor driver structure and the second three-phase motor driver structure, and protects the first three-phase motor driver structure and the second three-phase motor driver structure. The controller controls the first three-phase motor driver structure to drive the first fan, and controls the second three-phase motor driver structure to drive the second fan.

公开(公告)号：US20220094283A1

公开(公告)日：2022-03-24

申请号：US17467537

申请日：2021-09-07

申请人： Schneider Electric Industries SAS

发明人： Christophe Mollier

IPC分类号： H02P5/00 ,  H01H3/26

摘要： System for driving motors for operating switching units, in particular for an electrical supply substation, comprising control units for controlling the motors, wherein the control unit comprises, to have only one of the motors in operation at a time, a device for managing the priority of operation of the motors which is provided with a first line, referred to as the parallel line, carrying a binary datum comprising a first state representative of the stopping of all of the motors and a second state representative of the operation of any one of the motors, to which the units are connected in parallel, the parallel line being connected to a device for preventing/allowing the starting of the motor of each of the units and a second line, referred to as the series line, to which the units are connected in series in an upstream/downstream chain, the series line constituting a means for preventing the operation of the motors downstream of the any one of the motors on detection of a signal for starting the any one of said motors, to which the units are connected in series, the series line being connected to a device for preventing the operation of the motor of each of the units.

公开(公告)号：US20220069756A1

公开(公告)日：2022-03-03

申请号：US17137395

申请日：2020-12-30

申请人： Inventec (Pudong) Technology Corporation ,  INVENTEC CORPORATION

发明人： Shuaifeng ZHU ,  Hai-tao FANG ,  Lian-fei ZHANG ,  Qi LIU

IPC分类号： H02P29/00 ,  H02P5/00 ,  G01K13/00 ,  G01P3/00

摘要： The present disclosure provides a fan management method and system, and a server. The method includes: monitoring working performance of each dual-motor fan in real-time; determining whether the working performance of the dual-motor fan is normal, if the working performance is normal, instructing the dual-motor fan to continue to operate with normal performance; if the working performance is not normal, instructing a single-motor fan that has no abnormality in the dual-motor fan to operate with a preset compensation strategy; the preset compensation strategy is a strategy for performing performance compensation for a single-motor fan that has no abnormality to normal performance of a dual-motor fan. The present disclosure can reduce energy consumption of the server, avoid ineffective waste, and save operating costs. The fan can be prevented from running at a high speed for a long time, and the service life of the fan can be improved.