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公开(公告)号：US12068710B2
公开(公告)日：2024-08-20
申请号：US17903134
申请日：2022-09-06
申请人： DENSO CORPORATION
发明人： Shinsuke Kawadu
IPC分类号： H02P29/032 , B60R16/023 , H02P5/50 , H02P29/028
CPC分类号： H02P29/032 , B60R16/0232 , H02P5/50 , H02P29/028
摘要： An abnormality diagnosis system configured to diagnose an abnormality of an electric drive system mounted on a mobile body to drive a motor for moving the mobile body, includes: an information acquisition unit configured to acquire a motor output information which is information related to an output state of the motor; an output state determination unit configured to determine whether the output state of the motor is in a low output state that does not contribute to a movement of the mobile body by using the motor output information; and a diagnosis execution unit configured to diagnose an abnormality of the electric drive system when it is determined that the motor is in the low output state.
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公开(公告)号：US20240275326A1
公开(公告)日：2024-08-15
申请号：US18437478
申请日：2024-02-09
发明人： Giuseppe PIZZATO
IPC分类号： H02P29/032 , H02H7/08 , H02P29/024
CPC分类号： H02P29/032 , H02H7/0844 , H02P29/024
摘要： A safety system for electric motors (101) comprising a safety device (10) for monitoring electric motors (101), the safety device (10) comprises a control unit (12) having at least one input channel (16) connected to the power supply (100) of the electric motor (101) for detecting voltage and frequency on said power supply (100) and for transmitting at least one work signal correlated to the detected voltage and frequency, switching means (15) configured to transmit a control signal, and at least one first processing unit (17), connected to the input channel (16) and to the switching means (15) and configured to control the switching means (15) generating at least one activation signal according to the work signal. The control signal is transmitted in response to the activation signal and the processing unit (17) is configured to compare the work signal with predetermined frequency voltage thresholds.
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公开(公告)号：US11894792B2
公开(公告)日：2024-02-06
申请号：US17650532
申请日：2022-02-10
申请人： DENSO CORPORATION
发明人： Jun Yamada
IPC分类号： H02P29/032 , F16H61/32 , F16H63/34 , F16H63/38
CPC分类号： H02P29/032 , F16H61/32 , F16H63/3466 , F16H63/38 , F16H2061/326
摘要： A motor control device includes an energization control unit and an excessive return determination unit. The energization control unit controls energization to a motor. The excessive return determination unit determines whether or not there is a possibility of an excessive return exceeding an allowable return position, when a non-energization return control is performed to return a motor in a direction away from a movable limit position by an external force generated in the rotation transmission system by turning off the energization to the motor after driving the motor to the movable limit position where the drive is restricted by the drive limiting portion. When it is determined that there is no possibility of the excessive return, the energization is continuously turned off, and when it is determined that there is a possibility of the excessive return, a stop control configured to stop the motor by energizing is performed.
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4.发明公开公开(公告)号：US20240022193A1
公开(公告)日：2024-01-18
申请号：US18256076
申请日：2021-11-05
申请人： Robert Bosch GmbH
发明人： Michele Hirsch , Christian Hahn , Markus Becker
IPC分类号： H02P23/00 , H02P29/032 , H02P29/60 , H02P27/06
CPC分类号： H02P23/0022 , H02P29/032 , H02P29/60 , H02P27/06 , B60L3/0061
摘要： The invention relates to a method for determining a value profile of a controlled variable of an electrical system. Differences between predetermined values of an output variable at an end time and a determined value of the output variable at the end time are determined. A value profile of the controlled variable in the time interval is predetermined, the value profile being dependent on an end value at the end time and is being determined uniquely by the specification of the end value. Allowed values of the controlled variable are determined such that, when the electrical system is activated, the value of the output variable at the end time is equal to the determined difference. A curve of the allowed values of the controlled variable is determined on the basis of the allowed values of the controlled variable. A point of intersection of the determined curve and a predetermined derating function is determined. The value profile of the controlled variable within the time interval is determined as the value profile for which the end value of the value profile assumes the value of the controlled variable at the point of intersection.
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公开(公告)号：US11863103B2
公开(公告)日：2024-01-02
申请号：US18069513
申请日：2022-12-21
IPC分类号： H02P29/032 , H02P7/03 , E06B9/82 , E06B9/70 , H02P29/024 , E06B9/68
CPC分类号： H02P29/032 , E06B9/70 , E06B9/82 , H02P7/04 , H02P29/024 , E06B2009/6818
摘要： A motor drive unit for driving a motor of a motorized window treatment may comprise software-based and hardware-based implementations of a process for detecting and resolving a stall condition in the motor, where the hardware-based implementation is configured to reduce power delivered to the motor if the software-based implementation has not first reduced the power to the motor. A control circuit may detect a stall condition of the motor, and reduce the power delivered to the motor after a first period of time from first detecting the stall condition. The motor drive unit may comprise a stall prevention circuit configured to reduce the power delivered to the motor after a second period of time (e.g., longer than the first period of time) from determining that a rotational sensing circuit is not generating a sensor signal while the control circuit is generating a drive signal to rotate the motor.
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公开(公告)号：US11855576B2
公开(公告)日：2023-12-26
申请号：US18085353
申请日：2022-12-20
发明人： Kenneth G. Hansen
IPC分类号： H02P9/00 , H02P29/024 , H02K7/18 , H02P29/032 , H02P29/028
CPC分类号： H02P9/006 , H02K7/183 , H02P29/027 , H02P29/028 , H02P29/032
摘要： The present invention relates to a method for operating a power generating assembly in the event of a fault, wherein the power generating assembly comprises a PMG comprising at least first and second sets of stator windings, wherein each set of stator windings is connected to a power converter via a controllable circuit breaker, the method comprising the steps of detecting a fault associated with the first set of stator windings, and lowering, such as interrupting, the current in the second set of stator windings, and, after a predetermined delay, lowering, such as interrupting, the current in the first set of stator windings. The present invention also relates to a power generating assembly being capable of handling such faults, and a wind turbine generator comprising such a power generating assembly.
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公开(公告)号：US11750139B2
公开(公告)日：2023-09-05
申请号：US17627916
申请日：2020-06-25
发明人： Wolfgang Halder , Thomas Kühefuß , Georg Pfeiffer
IPC分类号： H02P29/00 , H02P29/032 , H02P29/68 , H02P3/22 , H02P27/08
CPC分类号： H02P29/0022 , H02P3/22 , H02P27/085 , H02P29/032 , H02P29/68 , H02P2201/09
摘要： In a method and system for operating a system having an energy storage device and a resistor, and in order to discharge the energy storage device, an electric power that is constant over time is continuously supplied to the resistor, e.g., during a time period, e.g., until the resistor has practically been fully discharged, the time period, e.g., being greater than the time constant of the temperature rise of the resistor induced by a continuous electric power that is constant over time and supplied to the resistor.
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公开(公告)号：US20230119168A1
公开(公告)日：2023-04-20
申请号：US18069513
申请日：2022-12-21
IPC分类号： H02P29/032 , H02P7/03 , E06B9/82 , E06B9/70 , H02P29/024
摘要： A motor drive unit for driving a motor of a motorized window treatment may comprise software-based and hardware-based implementations of a process for detecting and resolving a stall condition in the motor, where the hardware-based implementation is configured to reduce power delivered to the motor if the software-based implementation has not first reduced the power to the motor. A control circuit may detect a stall condition of the motor, and reduce the power delivered to the motor after a first period of time from first detecting the stall condition. The motor drive unit may comprise a stall prevention circuit configured to reduce the power delivered to the motor after a second period of time (e.g., longer than the first period of time) from determining that a rotational sensing circuit is not generating a sensor signal while the control circuit is generating a drive signal to rotate the motor.
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9.发明授权公开(公告)号：US11555491B2
公开(公告)日：2023-01-17
申请号：US17533183
申请日：2021-11-23
IPC分类号： F04B49/06 , F04B17/03 , F04B23/00 , F04B15/02 , H02P29/032 , F01D15/08 , F01D15/10 , H02J3/38 , H02K7/18 , H02P27/04 , E21B43/26 , F04B49/20 , H02J11/00
摘要： A hydraulic fracturing system includes a turbine generator for producing electricity at a well site, the turbine generator producing electrical energy at a voltage. The system also includes an electric pump electrically coupled to the turbine generator and receiving operative power from the turbine generator. The system further includes switch gear arranged between the electric pump and the turbine generator, the switch gear distributing electrical energy from the turbine generator to the electric pump, wherein the voltage remains substantially constant from the turbine generator to the electric pump.
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公开(公告)号：US11476791B2
公开(公告)日：2022-10-18
申请号：US16914832
申请日：2020-06-29
发明人： Takuya Iwazaki
IPC分类号： H02P29/032 , H02P27/06 , H02P29/024
摘要： A motor control device includes an electric current detection result acquisition unit configured to acquire a result of detecting an electric current for operating a motor, an electric current determination unit configured to determine whether or not the electric current acquired by the electric current detection result acquisition unit is greater than or equal to a predetermined threshold value, an operation time setting unit configured to set an operation time period corresponding to the electric current when the electric current determination unit determines that the electric current is greater than or equal to the predetermined threshold value, and an operation control unit configured to perform control for causing the motor to be continuously operated for the operation time period set by the operation time setting unit.
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