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公开(公告)号：US20210310492A1
公开(公告)日：2021-10-07
申请号：US17219101
申请日：2021-03-31
摘要： A motor leakage current detector and/or a heat compensating circuit, devices using same and related methods are disclosed herein. Included are a uniquely wired current transformer to allow for polarity agnostic leakage current detection, a leakage current detector using same and having a notifier to alert a user. In other forms, an accessory power cord and power strip are disclosed capable of detecting early motor failure conditions. In still other forms, other machinery failure early warning systems are disclosed as are numerous motor operated devices using same including without limitation pumps.
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公开(公告)号：US11140289B2
公开(公告)日：2021-10-05
申请号：US16788114
申请日：2020-02-11
发明人： Yuta Nito
摘要： An apparatus according to the aspect of the embodiments includes a phase determiner configured to determine a rotational phase of a rotor, a speed determiner configured to determine a rotational speed of the rotor, a controller having a first control mode for controlling the motor by supplying constant currents to windings, and a discriminator configured to discriminate whether a rotation of the motor is abnormal based on the rotational speed when the rotational speed corresponding to a command speed is equal to or higher than a predetermined value in a state where the controller is controlling the motor in the first control mode. When a signal output from the discriminator indicates that the rotation of the motor is abnormal, the controller stops the motor. When the signal output from the discriminator indicates that the rotation is not abnormal, the controller continues a drive of the motor.
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公开(公告)号：US11128251B1
公开(公告)日：2021-09-21
申请号：US16862212
申请日：2020-04-29
申请人： The Boeing Company
IPC分类号： H02P29/024 , H02P5/68 , H02P27/06 , B64C13/00
摘要： A fault-tolerant power system architecture for aircraft electric propulsion. The fault-tolerant systems continue to operate in the event of the failure of (or one or more faults within) some component. The fault-tolerant design enables the system to continue its intended operation, possibly at a reduced level, rather than failing completely, when some part of the system fails. When a turn-to-turn fault in an AC motor is detected, a motor controller will short three top or three bottom switches in the inverter together (effectively shorting the associated stator windings) to divert fault current from the motor windings to the motor controller, where cooling is available. Also, when a fault in or at the input to a motor controller is detected, the motor controller cuts off power to the motor by issuing a command that causes an upstream contactor with high-voltage DC bus input to open.
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公开(公告)号：US20210276685A1
公开(公告)日：2021-09-09
申请号：US17174422
申请日：2021-02-12
发明人： Yuta MIYAGI
IPC分类号： B63H21/17 , H02M1/32 , B63H23/34 , H02P29/024
摘要： A marine propulsion system includes marine propulsion devices each including a propeller shaft, an engine, an electric motor, a power transmission, an inverter, a voltage sensor, and a controller. The power transmission transmits mechanical power to the propeller shaft from at least one of the engine and the electric motor. The inverter outputs electric power inputted thereto to the electric motor after converting the electric power. The voltage sensor detects induced voltage generated by the electric motor. The controller executes a protection control to protect the inverter when the induced voltage is greater than a first threshold while the electric motor is not being driven.
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公开(公告)号：US11114968B2
公开(公告)日：2021-09-07
申请号：US16753675
申请日：2017-11-24
发明人： Yoshihiro Miyama , Hideaki Arita , Junji Hori , Tomohira Takahashi , Kenzo Makino , Masaya Inoue
IPC分类号： H02P27/06 , G01K1/024 , G01K7/32 , H02P29/024
摘要： A rotating electric machine apparatus including: a rotating electric machine (REM) including a rotor and a stator; an inverter device including an inverter circuit (IC) for driving the REM and an inverter control unit (ICU) for controlling the IC; a detector, in which a first antenna is connected to a resonance circuitry, which is mounted to the REM and has a resonance characteristic that changes depending on a change in a physical quantity; and a detection processor receiving a response radio wave indicating a detection result of the change in the physical quantity from the first antenna while transmitting a transmission radio wave at a set carrier frequency from a second antenna, and comparing the detection result and the set value, to thereby obtain an abnormal state in the REM. The ICU controls output of the IC in accordance with an abnormal state signal from the detection processor.
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公开(公告)号：US20210273597A1
公开(公告)日：2021-09-02
申请号：US17252437
申请日：2019-06-18
发明人： Gábor NAGY
IPC分类号： H02P29/024 , B62D5/04
摘要： An electromechanical motor vehicle power steering system having a multiphase, permanently excited electric motor via a controller and supply lines from an onboard power supply of a motor vehicle.
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公开(公告)号：US11088648B2
公开(公告)日：2021-08-10
申请号：US16813945
申请日：2020-03-10
发明人： Yuxiang Feng
IPC分类号： H02P29/024 , F24F11/46 , H02P27/06 , H03K17/081
摘要： An intelligent power module and a controller for an air conditioner are provided. For the intelligent power module, an adjust circuit is additionally provided between a respective drive circuit and a respective IGBT transistor. The adjust circuit detects a change in the voltage of a low voltage power supply of the intelligent power module in real time, and disables the output of the module when the voltage is detected to be too low due to fluctuation of the low voltage power supply. This operation releases the charge accumulated in the IGBT transistor, when energy storage of a drive motor causes charge accumulation of the IGBT transistor. The adjust circuit can continue releasing the charge when the low voltage power supply is restored to normal, to prevent the operating reliability of the module from being affected by the impact of the charge on internal circuits of the module.
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公开(公告)号：US20210234493A1
公开(公告)日：2021-07-29
申请号：US17257116
申请日：2019-06-21
IPC分类号： H02P29/024 , H02P6/28
摘要： A motor device includes a motor and a processing unit to control the motor. The processing unit transmits a current signal to a controller, which is electrically connected to the motor, by causing a current to flow through windings of the motor.
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公开(公告)号：US20210226569A1
公开(公告)日：2021-07-22
申请号：US16955266
申请日：2018-03-08
发明人： Shun MIYAMORI , Shinichiro URA , Keiichiro SHIZU
IPC分类号： H02P25/18 , H02P27/06 , H02P29/024 , H02P29/032
摘要： An electric motor drive device includes a wire-connected-state switching unit to switch a wire connected state of stator windings of an electric motor to either a delta connected state or a star connected state, an inverter to drive the electric motor, and a relay-voltage detection circuit to detect a relay voltage (VR) that is a power-supply voltage of the wire-connected-state switching unit, and to deactivate the inverter when the relay voltage (VR) is decreased below a threshold.
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公开(公告)号：US11056984B2
公开(公告)日：2021-07-06
申请号：US16637987
申请日：2018-09-28
申请人： AISIN AW CO., LTD.
发明人： Masashi Miyazaki , Subrata Saha , Isao Fujiwara , Yuki Sugiyama
IPC分类号： H02M7/00 , H02P27/08 , H02M7/5387 , H02P29/024 , B60L53/22 , H02M1/32 , H02M1/00
摘要： An inverter control device that controls an inverter connected to a direct-current power supply and connected to an alternating-current rotating electrical machine to convert electric power between direct current and alternating current of a plurality of phases, the inverter control device including an electronic control unit that is configured to perform, in a state in which one switching element of a plurality of switching elements included in the inverter has a turn-off failure in which the switching element always goes into an off state, torque reduction control for reducing torque of the rotating electrical machine or deceleration control for outputting torque in a reverse direction from a rotation direction of the rotating electrical machine by performing switching control of the plurality of switching elements.
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