公开(公告)号：US11529728B2

公开(公告)日：2022-12-20

申请号：US16625008

申请日：2018-06-04

申请人： Robert Bosch GmbH

发明人： Rudi Habermann

IPC分类号： B23Q11/00 ,  B25F5/00 ,  H02K11/28 ,  H02P6/08

摘要： The disclosure relates to a method for controlling a motor of a hand-held power tool by means of a blockable operating element, wherein a first position and a second position of the operating element are ascertained. According to the disclosure, the motor remains deactivated if a deviation of the ascertained first position from the ascertained second position is less than a threshold value.

公开(公告)号：US20220385207A1

公开(公告)日：2022-12-01

申请号：US17752875

申请日：2022-05-25

申请人： NIDEC ELESYS CORPORATION

发明人： Hirotaka YOSHIOKA ,  Jun KATSUMATA ,  Toshiyuki WATANABE

IPC分类号： H02M7/537 ,  H02P27/06 ,  H02P6/08 ,  H02P29/60

摘要： The disclosure provides an inverter device for driving an electric motor, including: an inverter circuit including a plurality of switching elements; and a control circuit controlling the inverter circuit. When a rotation speed of the electric motor is equal to or less than a preset rotation speed threshold and a torque of the electric motor is equal to or greater than a preset torque threshold, the control circuit changes a temperature estimation logic of the switching elements of the inverter circuit.

公开(公告)号：US20220368251A1

公开(公告)日：2022-11-17

申请号：US17741628

申请日：2022-05-11

申请人： Melexis Bulgaria EOOD

发明人： Dirk LEMAN

IPC分类号： H02P6/08 ,  H02P6/17 ,  H02P6/26 ,  H02P29/024 ,  H02P29/68

摘要： A motor driver for driving a single coil motor, the motor driver includes: a bridge driver configured for applying a driving signal to the single coil by commuting a motor voltage (Vmot) or a motor current (Imot), supplied to the bridge driver, between terminals (OUT1, OUT2) of the single coil; a controller configured for controlling the commuting of the bridge driver and for setting a preferred value of the motor voltage in function of a preferred operating point; a first voltage regulator configured for regulating the motor voltage or the motor current to the preferred value.

公开(公告)号：US11489477B2

公开(公告)日：2022-11-01

申请号：US16973919

申请日：2018-06-15

申请人： Mirka Oy

发明人： Caj Nordström ,  Tomas Södergård

IPC分类号： H02P1/00 ,  H02P27/08 ,  H02P6/08

摘要： A power tool with a direct current, DC, power source comprising a controller for controlling a driver circuit driving a brushless motor in a power tool, the driver circuit being coupled to a direct current, DC, power source and including a first switching element pair coupled to a first phase winding of the brushless motor and a second switching element pair coupled to a second phase winding of the brushless motor; and the controller being arranged to alternately switch a first switching element of the first switching element pair and a second switching element of the second switching element pair, wherein the first switching element and the second switching elements are coupled to a respective terminal of the DC power source. A power tool comprising such a controller, and a method of controlling a driver circuit driving a brushless motor in a power tool.

公开(公告)号：US11482909B2

公开(公告)日：2022-10-25

申请号：US16903434

申请日：2020-06-17

申请人： Lennox Industries Inc.

发明人： Stephen J. Vendt ,  Austin Clay Styer ,  Palanivel Subramaniam ,  Sunil K. Khiani ,  Wei Wang ,  Nasim Rahman

IPC分类号： H02K11/20 ,  F24F11/77 ,  G01R31/34 ,  H02K11/33 ,  G06K19/077 ,  H02P6/06 ,  H02P6/08

摘要： A method of calibrating a motor assembly includes selecting an electric motor and a motor controller for the motor assembly, obtaining at least one electric motor parameter of the electric motor, determining a correction factor for the electric motor based upon the at least one electric motor parameter, and programming the motor controller with the correction factor.

公开(公告)号：US20220321047A1

公开(公告)日：2022-10-06

申请号：US17642163

申请日：2020-10-07

申请人： Hitachi Astemo, Ltd.

发明人： Hiroto SAOTOME ,  Masaki HANO

IPC分类号： H02P27/08 ,  H02K11/33 ,  H02P6/08

摘要： A three-phase brushless motor control device uses one shunt resistor disposed on a bus of an inverter as a drive circuit driving a three-phase brushless motor and acquires a two-phase current of the three-phase brushless motor at a predetermined timing to vector-control the three-phase brushless motor. At this time, in accordance with a duration in which the two-phase current cannot be accurately acquired, the control device varies an acquisition timing of the two-phase current or varies a period during which the three-phase brushless motor is vector-controlled.

公开(公告)号：US20220321037A1

公开(公告)日：2022-10-06

申请号：US17679150

申请日：2022-02-24

申请人： HONDA MOTOR CO., LTD.

发明人： Yasumichi Onuki

IPC分类号： H02P6/08 ,  H02M7/5395 ,  H02P27/08

摘要： In a two-phase modulation type three-phase inverter control method having a pause section in which a pulse signal obtained by comparing a modulated wave signal for driving a motor and a carrier signal is not output, a pulse signal generation unit switches a first carrier signal to a second carrier signal when an electric angle of the motor is within the pause section for each of three phases.

公开(公告)号：US20220311236A1

公开(公告)日：2022-09-29

申请号：US17700975

申请日：2022-03-22

申请人： TAIGA MOTORS INC.

发明人： Gabriel BERNATCHEZ

IPC分类号： H02H7/08 ,  H02P6/08

摘要： Systems and methods for providing locked rotor protection for powertrains of electric vehicles are provided. One method for operating an electric vehicle includes receiving a command for propelling the electric vehicle, driving an electric motor of the powertrain of the electric vehicle, and determining that the powertrain is obstructed. After determining that the powertrain is obstructed, an output is generated to initiate one or more actions intended to protect the powertrain.

公开(公告)号：US11414125B2

公开(公告)日：2022-08-16

申请号：US16697851

申请日：2019-11-27

申请人： JTEKT CORPORATION ,  JTEKT EUROPE S.A.S.

发明人： Terutaka Tamaizumi ,  Tahar Slama ,  Pascal Moulaire ,  Pierre Larminy

IPC分类号： H02P6/08 ,  B62D5/04

摘要： A steering controller includes processing circuitry. The processing circuitry is configured to execute an operation process for calculating a torque command value corresponding to a sum of an amount by which the steering-side operation amount is converted into the torque required for the electric motor and an amount by which the steerable wheel-side operation amount is converted into the torque required for the electric motor and operate a drive circuit of the electric motor to adjust the torque of the electric motor to the torque command value.

公开(公告)号：US20220231624A1

公开(公告)日：2022-07-21

申请号：US17613713

申请日：2020-05-29

申请人： Aiswarya BALAMURALl ,  Philip KORTA ,  Shruthi MUKUNDAN ,  Anik ANIMESH ,  Narayan Chandra KAR ,  Lakshmi Varaha IYER ,  Gerd SCHLAGER ,  MAGNA INTERNATIONAL INC. ,  UNIVERSITY OF WINDSOR

发明人： Aiswarya BALAMURALI ,  Phlip KORTA ,  Shruthi MUKUNDAN ,  Anik ANIMESH ,  Narayan Chandra KAR ,  Lakshmi Varaha IYES ,  Gerd SCHLAGER

IPC分类号： H02P21/14 ,  H02P6/08 ,  H02P21/06 ,  H02P27/08 ,  B60L15/02 ,  H02P21/00

摘要： A motor drive system and method for determining an optimized efficiency of the motor drive system are provided. The motor drive system includes a system controller, a motor drive having includes an inverter configured to generate the AC power upon one or more motor leads, and an electric motor, which is to convert the AC power from the motor leads to rotational energy. A dynamometer may include a load coupled to the shaft and sensors to measure to measure operating characteristics such as torque and speed of the electric motor. The system controller is configured to generate a lookup table, with an entry describing an output current command for operating the inverter and the motor at a maximum system efficiency for a given combination rotational speed and output torque. Motor temperature may also be measured and used as an additional index into the lookup table.