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公开(公告)号：US20240235450A1
公开(公告)日：2024-07-11
申请号：US18406503
申请日：2024-01-08
发明人： Tamas Terdy , Kevin Cockerham
摘要： A motor drive circuit comprising: a motor bridge, comprising a bridge arm comprising upper and lower switches for each motor phase, which may be selectively closed to modulate voltage applied to the respective phases to drive signals from a motor control circuit, at least one solid-state-phase-isolation-relay (SSPIR) provided in series in an electrical path connecting a respective phase of the motor to a respective bridge arm, the SSPIR being closed in normal operation so that current can flow in the phase and held open in a fault mode of operation to prevent current flow, a monitoring arrangement for monitoring a current waveform in the phase to identify when it is safe to open the SSPIR without causing damage to the SSPIR due to an avalanche mode, and a control circuit that applies a voltage to each SSPIR that is sufficient to hold the SSPIR closed in normal operation is only opened when the current is in a safe operational area.
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公开(公告)号：US20240154558A1
公开(公告)日：2024-05-09
申请号：US18278785
申请日：2022-02-21
发明人： Thomas LEIBER , Andrej JEREB , Johannes ROSSMANN
IPC分类号： H02P25/18 , H02M1/12 , H02M7/5387 , H02P27/06
CPC分类号： H02P25/18 , H02M1/12 , H02M7/53871 , H02P27/06
摘要： A converter is configured for connection to an n-phase electric motor, n≥6. Coils associated with the n phases may form strands, at least two phases per strand. At least two of the at least two phases of a given strand may be connected in parallel or in series with one another as a function of at least one operating parameter of the electric motor or for setting an operating mode of the electric motor.
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公开(公告)号：US20190245470A1
公开(公告)日：2019-08-08
申请号：US16328911
申请日：2016-10-31
发明人： Masahiro NIGO
摘要： A driving device drives a motor having coils. The driving device includes a connection switching unit to switch a connection state of the coils, a temperature sensor to detect a room temperature, and a controller to switch the connection state of the coils based on a detected temperature by the temperature sensor.
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公开(公告)号：US20190245464A1
公开(公告)日：2019-08-08
申请号：US16390337
申请日：2019-04-22
发明人： Hongwei Wang , Qian Xu
CPC分类号： H02P6/153 , B24B47/12 , B24B49/16 , B25F5/00 , H02P6/00 , H02P6/28 , H02P25/18 , H02P29/40 , H02P2203/03
摘要： A power tool and a control method of the power tool are provided. The power tool includes a rotor and a stator having a first phase winding, a second phase winding and a third phase winding; a power supply module configured to power the motor; a drive circuit configured to electrically connecting the power module to at least two of the first phase winding, the second winding, and the third phase winding; a controller configured to control the drive circuit to connect the first phase winding, the second phase winding, and the third phase winding to the power supply module according to a rotational position of the rotor.
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公开(公告)号：US20190238073A1
公开(公告)日：2019-08-01
申请号：US16317974
申请日：2017-07-13
申请人： DENSO CORPORATION
发明人： Asaka KIMURA , Makoto TANIGUCHI , Keiji KONDO
CPC分类号： H02P6/10 , H02K3/28 , H02P6/153 , H02P25/18 , H02P25/22 , H02P27/06 , H02P2207/055 , H02P2209/01
摘要： A rotating electric machine apparatus includes a rotating electric machine and a full-bridge inverter. The full-bridge inverter includes first high-side switches, first low-side switches, second high-side switches, and second low-side switches. The rotating electric machine apparatus includes: first and second neutral point switches; a full-wave driving unit that performs a full-wave driving process in which switching control of the switches is performed in a state in which the first and second neutral point switches are turned off; a half-wave driving unit that performs a half-wave driving process in which switching control of the first high-side switches and the second low-side switches is performed in a state in which the first and second neutral point switches are turned on, and the first low-side switches and the second high-side switches are turned off; and an executing unit that selects and performs either of the full-wave driving process and the half-wave driving process.
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公开(公告)号：US20190199157A1
公开(公告)日：2019-06-27
申请号：US16240718
申请日：2019-01-05
申请人： Shixing ZHANG
发明人： Shixing ZHANG
CPC分类号： H02K3/28 , H02K11/33 , H02K17/04 , H02K17/12 , H02K17/14 , H02K2213/09 , H02M5/02 , H02M2001/0012 , H02P1/26 , H02P25/18 , H02P25/20 , H02P25/22 , H02P2207/01
摘要： Disclosed are a variable power motor and an intelligent controller therefor. The motor includes a rotor, a stator, a housing, stator windings and terminals. The stator windings are formed by embedding the same stator core into multiple series windings. Various series nodes of the stator windings, each serving as a power supply terminal with different power, are respectively led out individually. The various series windings of the stator respectively control, by means of the intelligent controller, the switching on and off of multiple switching switches. The soft-start and soft-stop of the motor can be realized, and a load is automatically tracked to regulate the power of the winding during operation, so as to obtain a power-saving effect.
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公开(公告)号：US20180175757A1
公开(公告)日：2018-06-21
申请号：US15577556
申请日：2016-04-29
发明人： Hideyuki Tanimoto , Eiji Nakayama
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.
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公开(公告)号：US09755468B2
公开(公告)日：2017-09-05
申请号：US15047280
申请日：2016-02-18
申请人： Oved Zucker
发明人： Oved Zucker
IPC分类号： H02K3/04 , H02K11/20 , H02K11/00 , H02K11/33 , H02P25/22 , H02K41/03 , H02K7/14 , H02P9/00 , H02P25/18 , H02P101/45
CPC分类号： H02K3/04 , H02K7/14 , H02K11/0094 , H02K11/20 , H02K11/33 , H02K41/031 , H02K2213/12 , H02P9/00 , H02P25/18 , H02P25/22 , H02P2101/45 , Y10T29/49009
摘要： Systems and methods for generating currents in a plurality of CTS that may be independently controlled by a microprocessor. In some cases, a DC power source (such as a battery) is connected to each inverter. In other cases, a rechargeable DC power source (such as a capacitor) is connected to each inverter. Multiple controllable, turn-less structures may be provided in a suitable configuration with a single, main control processor or alternatively, with both a main control processor and several intermediate level command modules, each intermediate level command module coupled to a respective one of the inverters to control currents through each conductor of the respective inverter.
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公开(公告)号：US09705441B2
公开(公告)日：2017-07-11
申请号：US15010867
申请日：2016-01-29
申请人： QM Power, Inc.
发明人： Charles J. Flynn , Cooper N. Tracy
摘要： A circuit includes phase windings to receive alternating current (AC) line voltage. The circuit has a direct current (DC) power supply, a power switch circuit comprising at least one power switch, and a control circuit to turn off the power switch circuit when a rotor associated with the circuit is in an identified rotor position, rotor magnet polarity, or speed relative to the AC line voltage. The circuit also has at least one non-collapsing DC power supply component to prevent the DC power supply from collapsing when the at least one power switch is on and conducting during at least a portion of a cycle. One or more of the DC power supply, power switch circuit, and control circuit may be at a midpoint of the phase windings.
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公开(公告)号：US20170141714A1
公开(公告)日：2017-05-18
申请号：US14940558
申请日：2015-11-13
发明人： Christy Looby , James McIntosh
IPC分类号： H02P29/02 , G01R19/165 , G01R31/26 , H02P6/12 , H02P6/00
CPC分类号： H02P29/021 , G01R19/16519 , G01R31/2621 , H02P6/12 , H02P25/18
摘要： An isolation switch driver includes a control circuit to control conduction of an isolation switch and a voltage monitor circuit to monitor a control voltage coupled to the isolation switch and to generate a fault indication if the control voltage is less than a predetermined threshold. The isolator driver can drive an isolation switch coupled between a bridge network and a motor in a motor control system. The monitor circuit can monitor a voltage between a gate terminal and a source terminal of the isolation switch and include a resistive element coupled between the gate terminal and the source terminal to generate a current proportional to the VGS voltage, a current mirror to shift a level of the current to a reference potential, and a comparator to compare the level-shifted current to a threshold current.
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