公开(公告)号：US12009768B2

公开(公告)日：2024-06-11

申请号：US17863654

申请日：2022-07-13

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： Zixu Wu

IPC分类号： H02P3/00 ,  B60R16/023 ,  G06F13/40 ,  H02P5/00 ,  H02P5/46 ,  H02P6/08 ,  H02P7/03 ,  H03K19/017 ,  H04L25/49 ,  H04L12/40

CPC分类号： H02P7/04 ,  B60R16/0238 ,  G06F13/4068 ,  H02P6/085 ,  H03K19/01721 ,  H04L25/4902 ,  H04L12/40 ,  H04L2012/40215 ,  H04L2012/40273

摘要： This application provides an interface circuit of a vehicle-mounted control unit comprising an H-bridge circuit, an input branch, and a pull-up network. An input end of the H-bridge circuit is connected to a controller 240, and an output end of the H-bridge circuit is connected to an interface port IO of the interface circuit. A first end of the input branch is connected to the interface port IO, and a second end of the input branch is connected to the controller.

公开(公告)号：US20240154563A1

公开(公告)日：2024-05-09

申请号：US18486245

申请日：2023-10-13

申请人： SHINANO KENSHI KABUSHIKI KAISHA

发明人： Takaaki MATSUDA ,  Jinichi TATSUNO ,  Eiji HIRACHI

IPC分类号： H02P27/08

CPC分类号： H02P27/085 ,  H02P6/085

摘要： A control circuit has a three-phase modulation operation mode under which a three-phase modulation signal is output to an inverter circuit as a pulse width modulation signal, a two-phase modulation operation mode under which a two-phase modulation signal is output to the inverter circuit as the pulse width modulation signal, and a transitional operation mode under which one of the three-phase modulation operation mode and the two-phase modulation operation mode is switched to the other. The control circuit transitions to the transitional operation mode in response to a reference signal set in advance, and switches an operation by outputting to the inverter circuit, a transition modulation signal with a mixture ratio between the three-phase modulation signal and the two-phase modulation signal being gradually changed in a predetermined electrical angle interval unit.

公开(公告)号：US20230283210A1

公开(公告)日：2023-09-07

申请号：US18014410

申请日：2021-07-06

申请人： IRP NEXUS GROUP LTD

发明人： Paul PRICE ,  Shmuel BEN YAAKOV

IPC分类号： H02P6/182 ,  H02P6/08 ,  H02P27/08

CPC分类号： H02P6/182 ,  H02P6/085 ,  H02P27/085

摘要： Circuitry for directly providing drive power to a BLDC motor having separated coils, comprising unipolar controlled current sources for supplying current to each of the separated coils; a controller, for controlling the level and phase of the unipolar controlled current sources; a polarity switch for converting the unipolar current to a bipolar (AC) current, supplied to the separated coils. The controller is adapted to shape the current being fed to the BLDC motor by the current source via the polarity switch, to be in phase with the back EMF sensed on the separated coils, and of a magnitude that corresponds to a required torque.

公开(公告)号：US20190237274A1

公开(公告)日：2019-08-01

申请号：US16336292

申请日：2017-09-05

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： THOMAS HILKER

IPC分类号： H01H3/30 ,  H01H3/26 ,  H02P7/03 ,  H02P27/08

CPC分类号： H01H3/3005 ,  H01H3/26 ,  H01H3/30 ,  H01H3/3021 ,  H01H2003/266 ,  H02P6/085 ,  H02P7/03 ,  H02P27/08

摘要： A motor assembly for a switch drive of an electric switch. The motor assembly has a brushless three-phase motor and an electronic control device for controlling the three-phase motor. The control device has a rectifier unit for rectifying a supply voltage of the motor assembly if the supply voltage is an AC voltage, and for reverse polarity protection if the supply voltage is a DC voltage. The control device also has a voltage measuring unit for detecting a rectifier output voltage of the rectifier unit, a switch unit for generating a pulse width-modulated drive AC voltage for the three-phase motor from the rectifier output voltage, and a control unit for actuating the switch unit according to the rectifier output voltage.

公开(公告)号：US20180269869A1

公开(公告)日：2018-09-20

申请号：US15714643

申请日：2017-09-25

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Rajarshi MUKHOPADHYAY ,  Sooping SAW ,  Anuj JAIN

IPC分类号： H03K17/16 ,  H02P6/14

CPC分类号： H03K17/162 ,  H02M1/08 ,  H02M1/44 ,  H02M7/5387 ,  H02M2001/0029 ,  H02M2001/0054 ,  H02P6/085 ,  H02P6/14 ,  H03K17/166 ,  H03K2217/0045 ,  H03K2217/0063 ,  H03K2217/0072

摘要： Modulating a gate drive current supplied to an output drive switch coupled to an electric motor by performing at least the following: obtain a gate drive current modulation profile, supply, based on the gate drive current modulation profile, a first gate drive current level as the gate drive current when the output drive switch is operating within a first region, drop the first gate drive current level to a second gate drive current level when the output drive switch transitions from the first region to operating within a Miller region, increase the second gate drive current level to a third gate drive current level within the Miller region, and set the gate drive current to a fourth gate drive current level when the output drive switch transitions from the Miller region to operating within a third region.

公开(公告)号：US20180269814A1

公开(公告)日：2018-09-20

申请号：US15663673

申请日：2017-07-28

申请人： ANPEC ELECTRONICS CORPORATION

发明人： KUN-MIN CHEN ,  I-LIN CHIU

IPC分类号： H02P6/16 ,  H02P6/08

CPC分类号： H02P6/16 ,  H02P6/085

摘要： A motor control system includes a motor driving circuit and a motor. The motor driving circuit includes a control module, a PWM signal detecting module, a transient state detecting module and a driving module. The PWM signal detecting module is electrically connected to the control module to receive a PWM signal and to convert the PWM signal into a first digital PWM control signal. The transient state detecting module provides a second digital PWM control signal to the control module according to the first digital PWM control signal at a first time point and the first digital PWM control signal at a second time point. The driving module receives at least one driving signal from the control module. The control module determines whether to turn off a low side switch of the driving module according to the second digital PWM control signal.

公开(公告)号：US20180197385A1

公开(公告)日：2018-07-12

申请号：US15402497

申请日：2017-01-10

申请人： Woodward, Inc.

发明人： Ganga P. Jayaraman ,  Michael L. Lyles ,  Zenon P. Szulyk ,  Bryan R. Haack

IPC分类号： G08B6/00 ,  H02P6/14 ,  H02P23/00

CPC分类号： G08B6/00 ,  B64C13/0421 ,  B64C13/0427 ,  B64C13/46 ,  G05G9/047 ,  H02P6/085 ,  H02P6/14 ,  H02P6/17 ,  H02P21/06 ,  H02P23/0004

摘要： The subject matter of this specification can be embodied in, among other things, a motion control apparatus that includes a brushless DC motor to actuate a mechanical output based on a collection of phase power signals, a collection of first Hall effect sensors configured to provide a collection of first feedback signals in response to a sensed motor position and a sensed motor speed, a controller configured to determine a speed and position of the motor based on the feedback signals, and determine an electrical current level based on a collection of operational parameters and feedback signals including a position of the mechanical output, the motor speed, and the motor position, a current controller configured to provide electrical phase sequence output signals based on the electrical current level, and a motor driver configured to provide the collection of phase power signals based on the electrical phase sequence output signals.

公开(公告)号：US20180175757A1

公开(公告)日：2018-06-21

申请号：US15577556

申请日：2016-04-29

申请人： Hitachi Koki Co., Ltd.

发明人： Hideyuki Tanimoto ,  Eiji Nakayama

IPC分类号： H02P6/28 ,  B25F5/02 ,  H02K23/64 ,  H02P4/00

CPC分类号： H02P6/28 ,  B23D47/12 ,  B25F5/00 ,  B25F5/02 ,  H02K23/64 ,  H02P4/00 ,  H02P6/085 ,  H02P25/18 ,  H02P25/188

摘要： To provide a power tool capable of suppressing variations in motor characteristics between external power sources with different voltage while preventing an increase in the size of the power tool. The power tool includes: a motor including a stator on which a plurality of windings are wound and a rotor rotatable relative to the stator; an output unit driven by rotation of the rotor; a power source connection part connectable to an external power source serving as a driving power source of the motor; power source voltage detecting means configured to perform detecting a voltage of the external power source connected to the power source connection part; and connection form changing means configured to perform changing a connection form of the plurality of windings on the basis of the voltage of the external power source.

公开(公告)号：US10003283B2

公开(公告)日：2018-06-19

申请号：US15309045

申请日：2015-03-09

申请人： Robert Bosch GmbH

发明人： Ekard Grossmann ,  Daniel Raichle

IPC分类号： H02P6/14 ,  H02P27/06 ,  H02P3/22 ,  B60L3/00 ,  B60L11/18 ,  H02P29/02 ,  H02M1/32 ,  H02P6/08 ,  H02M1/00

CPC分类号： H02P3/22 ,  B60L3/0061 ,  B60L50/51 ,  H02M1/32 ,  H02M2001/0009 ,  H02P6/085 ,  H02P27/06 ,  H02P29/02 ,  Y02T10/642 ,  Y02T10/7005

摘要： The present invention provides a device and a method for changing the operating state of an electric machine to the free-wheeling mode, in which significant excessive increases in voltage can be avoided. In the freewheeling mode, the individual phase connections of an electric machine are disconnected electrically from one another in order to change the electric machine into a safe operating state. According to the invention, only some of the phase currents of the electric machine are evaluated. On the basis of the evaluated phase currents, suitable times for the disconnection of all the phase connections are determined, that is to say even for the phases in which no evaluation of the phase currents takes place.

公开(公告)号：US20180138853A1

公开(公告)日：2018-05-17

申请号：US15370345

申请日：2016-12-06

申请人： DELTA ELECTRONICS, INC.

发明人： Wei-Shuo TSENG ,  Chao-Chin CHUANG ,  Yao-Yang YU ,  Li-Wei HSIAO

IPC分类号： H02P29/10 ,  H02P6/14 ,  H02P27/06

CPC分类号： H02P29/10 ,  H02M1/32 ,  H02M1/4225 ,  H02M2001/0022 ,  H02M2001/325 ,  H02M2001/4291 ,  H02P6/085 ,  H02P6/14 ,  H02P6/28 ,  H02P23/26 ,  H02P27/06 ,  H02P2201/07 ,  Y02B70/126 ,  Y02P80/112

摘要： An electronically commutated fan system includes an alternating-current-to-direct-current conversion unit, an inverter unit and a control unit. The alternating-current-to-direct-current conversion unit converts an alternating-current input power source into a first direct-current power source. The inverter unit is electrically connected between the alternating-current-to-direct-current conversion unit and a fan. The inverter unit converts the first direct-current power source into an alternating-current output power source and provides the alternating-current output power source to the fan to rotate. The control unit is electrically connected to the alternating-current-to-direct-current conversion unit and the inverter unit. The control unit controls the alternating-current-to-direct-current conversion unit and the inverter unit to adjust a rotational speed of the fan. When the control unit detects a power variation of the alternating-current input power source, the control unit controls the rotational speed of the fan to be maintained within a first error range.