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1. 发明申请

US20230030062A1 CONTROL CIRCUIT, CONTROL METHOD, METHOD FOR OPERATING A BRAKE SYSTEM, COMPUTER PROGRAM PRODUCT AND CONTROL UNIT 有权
公开(公告)号：US20230030062A1
公开(公告)日：2023-02-02
申请号：US17871224
申请日：2022-07-22
申请人： ZF Active Safety GmbH
发明人： Stefan Grieser-Schmitz
IPC分类号： H02P3/22 , B60T8/88 , B60T8/92
摘要： A control circuit, is disclosed, which is developed and intended for use in a motor vehicle. The control circuit comprises a first circuit portion, which is developed and intended to detect an error state of a control module and/or supply source, such as a voltage supply, of a drive arrangement, for example a drive arrangement of a brake system of the motor vehicle, and/or an electric drive of the drive arrangement, and is developed and intended to cause a short-circuit of the electric drive of the drive arrangement if an error state has been detected. A control method is also disclosed, for operating a brake system of a motor vehicle, as well as a computer program and a control unit or system having multiple control units.

2. 发明授权

US11437920B2 Converter system having an AC/DC converter, and method for operating a converter system 有权
公开(公告)号：US11437920B2
公开(公告)日：2022-09-06
申请号：US16952604
申请日：2020-11-19
申请人： SEW-EURODRIVE GMBH & CO. KG
发明人： Marcel Stark
IPC分类号： H02M5/42 , H02P3/22 , H02P29/68 , B60L7/02 , H02M5/458 , H02M7/53 , H02M1/08 , H02P27/06 , H02H6/00 , H02M1/32 , H02H5/04
摘要： A system includes a braking resistor and a controllable switch connected in series, the controllable switch adapted to connect to a terminal on a direct-voltage side of an AC/DC converter; an evaluation unit adapted to generate a control signal to control the controllable switch and including a determination device adapted to determine electric power supplied to the braking resistor; a voltage-acquisition device adapted to supply an output signal to the evaluation unit; and a controller adapted to regulate a set value toward an output signal of the determination device, the controller adapted to supply, directly and/or via a limiter, to a parameterizable filter adapted to convey an output signal to a switching element, the switching element adapted to generate an output signal to open and/or close the controllable switch as a function of exceeding and/or undershooting of a threshold value.

3. 发明申请

US20220255472A1 METHOD OF CONTROLLING BRAKING OF AN MULTI-PHASE ELECTRICAL MOTOR 有权
公开(公告)号：US20220255472A1
公开(公告)日：2022-08-11
申请号：US17597517
申请日：2020-07-03
申请人： BORGWARNER LUXEMBOURG AUTOMOTIVE SYSTEMS SA
发明人： Philippe FARAH , Sebastien STOLTZ-DOUCHET
IPC分类号： H02P3/12 , B60L15/20 , B60L7/00 , B60L7/16 , H02P3/22
摘要： A method of braking in an electrically powered vehicle, said vehicle including a drive system which includes a multi-phase motor electric motor, said motor comprising at least one stator group; said stator group comprising a first stator arrangement including three coils (e2, e4, e6) and a second stator arrangement including threes coils, (e2* e4* e6*) being angularly offset from said first coil arrangement, and where, said first arrangement is connected to respective low side and/or high side circuitry, including a low side switches (32, 34, 36) and/or high side switches (31, 33, 35) for each of the said coils respectively, adapted to selectively allow current to flow through said respective coils of said first stator arrangement from a power source, and where said second arrangements is connected to respective low side and/or high side circuitry, including a low side switches (32*, 34, *36*) and/or high side switches (31*, 33*, 35*) for each of the said coils respectively, adapted to selectively allow current to flow through said respective coils of said second stator arrangement from a power source, said method comprising: for one or more of each group: for either or both of said second or first arrangements, i) setting any two of said switches in said low side circuitry to a closed state and the other switch in an open state, and setting all the switches in the high side to an open state; and/or ii) setting any two of said switches in said high side circuitry to a closed state and setting the other switch to an open state, and setting all the switches on the low side to an open state.

4. 发明申请

US20210367537A1 MOTOR DRIVING CONTROL APPARATUS AND MOTOR DRIVING CONTROL METHOD 有权
公开(公告)号：US20210367537A1
公开(公告)日：2021-11-25
申请号：US16975190
申请日：2019-01-08
申请人： MINEBEA MITSUMI Inc.
发明人： Katsunori YAMAMOTO , Hiroyuki KATO
IPC分类号： H02P3/22 , H02P27/06
摘要： A motor driving control apparatus according to an embodiment includes an interphase short-circuiting unit that is connected to at least two-phase coils of the three-phase coils, and that short-circuits at least a pair of coils among three pairs that are different combinations of two coils of the three-phase coils, in response to a short-circuiting signal; a short-circuiting signal output unit that is connected between the coil and the interphase short-circuiting unit, and that outputs a short-circuiting signal to the interphase short-circuiting unit when an input of the brake control signal is received; and a protecting operation unit that stops the interphase short-circuiting unit short-circuiting the coils, based on a voltage condition of a one-phase coil of the three-phase coils.

5. 发明申请

US20210344289A1 ELECTRONIC BRAKING IN A POWER TOOL 有权
公开(公告)号：US20210344289A1
公开(公告)日：2021-11-04
申请号：US17372936
申请日：2021-07-12
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Carl B. Westerby , Timothy R. Obermann , Alex Huber
IPC分类号： H02P3/14 , H02P7/29 , B25F5/00 , H02P3/22 , B24B47/12 , B24B23/02 , B25F5/02
摘要： A power tool includes a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first low side electronic switch and a power source electronic switch, and connected to the power source via a first high side electronic switch in parallel with a diode. The electronic processor is configured to receive an indication to stop the motor during operation of the motor and activate the first low side electronic switch and a second low side electronic switch for a first predetermined time responsive to receiving the indication such that a back-electromagnetic force generated by the motor is stored in the first phase. The electronic processor is configured to deactivate the second low side electronic switch after the first predetermined time such that a first regenerative current is provided to the power source via the diode.

6. 发明申请

US20210276648A1 THEFT-DETERRENT SYSTEM FOR ELECTRIC BICYCLE USING THE MOTOR IN THE ABSENCE OF A BATTERY 有权
公开(公告)号：US20210276648A1
公开(公告)日：2021-09-09
申请号：US17251691
申请日：2019-06-05
申请人： EBIKELABS
发明人： Theophile ALARY , Maël BOSSON , Raphaël MARGUET
IPC分类号： B62H5/08 , B62J43/10 , B62J43/23 , H02P3/22
摘要： The invention relates to a method for deterring theft of a vehicle having a three-phase electric motor without a freewheel (10), comprising the steps of using the motor in a generator mode to power a motor control circuit (14) in an initial phase of rotating the motor through motion of the vehicle; and, when the power supply level of the control circuit reaches a first threshold (Vmin), connecting by the control circuit first and second phases (b, c) of the three-phase motor continuously to a first power supply line (Vss), whereby the first and second phases are short-circuited and cause an increased braking force of the motor. During this time, the third phase of the motor may be connected to continue to supply energy to the control circuit.

7. 发明申请

US20210276217A1 CHAIN SAW, POWER TOOL AND CONTROL METHOD THEREOF 有权
公开(公告)号：US20210276217A1
公开(公告)日：2021-09-09
申请号：US17328565
申请日：2021-05-24
申请人： Nanjing Chervon Industry Co., Ltd.
发明人： Jinbiao Zhao , Hongwei Wang
IPC分类号： B27B17/08 , B27B17/02 , B25F5/00 , H02P3/22 , H02P6/24
摘要： Disclosed is a chain saw and a power tool, including a working part, a body, a brushless motor, a power supply device, a drive circuit, a controller, and a motion detection device. The motion detection device is coupled to the body or the working part for detecting a motion of the body or the working part in at least one direction. The controller is configured to control the drive circuit to make the brushless motor enter a braking mode when the amount of the motion of the body or the working part in at least one direction exceeds a predetermined threshold.

8. 发明授权

US11075594B2 Electronic braking in a power tool 有权
公开(公告)号：US11075594B2
公开(公告)日：2021-07-27
申请号：US16896600
申请日：2020-06-09
申请人： MILWAUKEE ELECTRIC TOOL CORPORATION
发明人： Carl B. Westerby , Timothy R. Obermann , Alex Huber
IPC分类号： H02P3/14 , H02P7/29 , B25F5/00 , H02P3/22 , B24B23/02 , B24B47/12 , B25F5/02
摘要： A power tool includes a three-phase DC motor, a power switching network, a power source, and an electronic processor. A first phase of the motor is connected between a first low side electronic switch and a power source electronic switch, and connected to the power source via a first high side electronic switch in parallel with a diode. The electronic processor is configured to receive an indication to stop the motor during operation of the motor and activate the first low side electronic switch and a second low side electronic switch for a first predetermined time responsive to receiving the indication such that a back-electromagnetic force generated by the motor is stored in the first phase. The electronic processor is configured to deactivate the second low side electronic switch after the first predetermined time such that a first regenerative current is provided to the power source via the diode.

9. 发明授权

US11050367B2 Motor drive device 有权
公开(公告)号：US11050367B2
公开(公告)日：2021-06-29
申请号：US16644566
申请日：2018-10-05
申请人： OMRON Corporation
发明人： Shengpei Wang
IPC分类号： H02P3/22
摘要： A long-life motor driving device is realized. A motor driving device (11) includes: a motor driving circuit (3) configured to supply an alternating electric current to a motor (2); and a dynamic braking circuit (4). The dynamic braking circuit includes: a mechanical switch (SW2) configured to cause a short circuit between windings corresponding to respective two phases; a semiconductor switch (SW1) connected to the mechanical switch in parallel and configured to cause a short circuit between the windings corresponding to the respective two phases; and a first impedance circuit (Z1) connected to the semiconductor switch in series.

10. 发明授权

US10985680B2 Method and controller for controlling an electric motor 有权
公开(公告)号：US10985680B2
公开(公告)日：2021-04-20
申请号：US16322198
申请日：2017-07-31
申请人： PROTEAN ELECTRIC LIMITED
发明人： Timothy John Martin
IPC分类号： H02P6/18 , H02P6/182 , H02P3/22 , B60L3/00 , H02P3/18
摘要： A method for controlling an electric motor, the method comprising receiving a command to place the electric motor in a short circuit mode; varying a limit to an available pulse width modulation depth for controlling current flow in the electric motor to a predetermined value over a predetermined time period or at a predetermined rate of change; wherein upon the pulse width modulation depth limit being varied to the predetermined value placing the electric motor in the short circuit mode.

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