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公开(公告)号：US20230378867A1
公开(公告)日：2023-11-23
申请号：US18044096
申请日：2020-10-26
CPC分类号： H02M1/4225 , H02P27/06 , H02M7/48 , H02M1/14
摘要： A power conversion apparatus includes a rectification and boost unit that rectifies a first alternating-current power supplied from a commercial power supply and boosts voltage of the first alternating-current power; a capacitor connected to output terminals of the rectification and boost unit; an inverter that is connected across the capacitor, converts power output from the rectification and boost unit and the capacitor into a second alternating-current power, and outputs the second alternating-current power to a load including a motor; and a control unit that performs operation control on the rectification and boost unit, and performs operation control on the inverter to cause the second alternating-current power that includes a pulsation based on a pulsation of power that flows into the capacitor from the rectification and boost unit to be output from the inverter to the load, to restrain a current that flows into the capacitor.
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公开(公告)号：US11824472B2
公开(公告)日：2023-11-21
申请号：US17481053
申请日：2021-09-21
IPC分类号： H02P23/28 , H02K9/19 , H02K21/02 , H02P25/022 , H02P27/06
CPC分类号： H02P23/28 , H02K9/19 , H02K21/02 , H02P25/022 , H02P27/06 , H02K2209/00
摘要： A motor drive apparatus includes a motor, a power converter, and a controller that controls the voltage supplied to the motor by the power converter. The power converter converts a voltage of a 400 V-class AC power supply to a voltage with an effective value lower than an effective value of the 400 V-class AC power supply. The power converter converts the voltage by a switching operation of a plurality of switching elements. The motor is configured so that a value of φ×Vx/Ld is greater than Pmax when an effective value voltage Vx=200 V. A d-axis inductance of the motor is Ld. A flux linkage of the motor is φ. A maximum output of the motor in a device where the motor is mounted is Pmax. The controller has a control mode in which an effective value voltage higher than Vx is applied to the motor.
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83.发明授权公开(公告)号：US11824452B2
公开(公告)日：2023-11-21
申请号：US17662621
申请日：2022-05-09
发明人： Jung Wook Park , Issac Kim
CPC分类号： H02M3/335 , B60L53/20 , H02M5/4585 , H02P27/06
摘要： According to the integrated power conversion apparatus and method according to the exemplary embodiment of the present disclosure, the on-board battery charger (OBC), the lower voltage battery charger (LDC), and the traction converter (TC) are integrated to convert the power so that all the functions which need to be performed by the power conversion system of the related art can be performed. Further, the number of switches is reduced to increase a power density and not only the number of switches, but also the number of controllers is reduced to improve feasibility.
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公开(公告)号：US20230369961A1
公开(公告)日：2023-11-16
申请号：US18026006
申请日：2021-09-09
申请人： Rohm Co., Ltd.
发明人： Hideo HARA , Naohiro IMAKAKE
摘要： A semiconductor module includes a first terminal configured to be fed with a first potential, a second terminal, a third terminal configured to be fed with a second potential lower than the first potential, a first switch connected between the first and second terminals, a second switch connected between the second and third terminals, a first driver configured to turn on and off the first switch, and a second driver configured to turn on and off the second switch. The first driver is configured to set, based on a voltage fed to the second terminal, an inhibition period in which the first switch is inhibited from being turned on.
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公开(公告)号：US20230361711A1
公开(公告)日：2023-11-09
申请号：US18222643
申请日：2023-07-17
发明人： Mohammed S. Arefeen
CPC分类号： H02P27/06 , H02J7/0063
摘要： An electrical ride-through (ERT) unit is configured to apply a voltage to a drive circuit during disruptions of line voltage to the drive circuit. The ERT unit includes a capacitor on an ERT circuit that is prevented from applying the voltage to the drive circuit during normal operation of the drive circuit and applies the voltage to the drive circuit during a voltage drop on the drive circuit.
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公开(公告)号：US20230361703A1
公开(公告)日：2023-11-09
申请号：US17802167
申请日：2021-03-08
申请人： ADVICS CO., LTD.
发明人： Yuya HORIE , Tomoya TAKAHASHI
摘要： A current command value deriving unit of a motor control device derives a d-axis current command value and a q-axis current command value based on a torque current map and a torque command value. A voltage command value deriving unit executes a first process of deriving a d-axis voltage command value based on the d-axis current command value and deriving a q-axis voltage command value based on q-axis current command value, and a second process of deriving the d-axis voltage command value based on the q-axis current command value and deriving the q-axis voltage command value based on a limit voltage and the d-axis voltage command value. When a motor is driven by field-weakening control, the voltage command value deriving unit switches from the second process to the first process when it is determined that the voltage command value satisfying the torque command value is derivable by the first process.
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公开(公告)号：US11811345B1
公开(公告)日：2023-11-07
申请号：US17805999
申请日：2022-06-08
发明人： Stan Rex Simms , Thomas A. Farr , Donovan Gray
摘要： A converter of a variable frequency drive (VFD) is operated in a ramp-up mode to produce an AC output voltage for accelerating a motor. A loading of the converter is determined concurrent with the ramp-up mode. Transfer of the motor to a bypassed mode is conditioned on whether the determined loading in the ramp-up mode meets a criterion. In some embodiments, conditioning transfer to the bypassed mode comprises foregoing transition to the bypassed mode based on a comparison of the determined loading to an underloading threshold.
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88.发明公开公开(公告)号：US20230344321A1
公开(公告)日：2023-10-26
申请号：US18305725
申请日：2023-04-24
申请人： BorgWarner Inc.
发明人： Mostak Mohammad , Randy H. Wiles , Emre Gurpinar , Omer Onar , Shajjad Chowdhury , Jonathan Wilkins , Gabriel Alejandro Domingues Olavarria , Dmitry S. Semenov
CPC分类号： H02K11/33 , H02P27/06 , H02K2213/03
摘要： Embodiments of the disclosure provide an electric drive motor system that includes a stationary-side, a rotating-side, and a stationary-side sensor system operable to detect current on the stationary-side and send current-based sensor readings to a controller. The stationary-side further includes a compensation network. The controller is operable to perform a rotor current prediction operation operable to predict a rotor current associated with a rotor of the rotating-side based at least in part on the current-based sensor readings and a parameter of at least one component of the compensation network of the stationary-side.
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公开(公告)号：US11799412B2
公开(公告)日：2023-10-24
申请号：US17265380
申请日：2019-07-22
申请人： DENSO CORPORATION
发明人： Kouhei Takahashi , Yoshinobu Nagao
IPC分类号： H02P27/06 , H02P29/024 , H02P29/50 , F04D13/06 , F04D29/40
CPC分类号： H02P29/027 , F04D13/06 , F04D29/406 , H02P29/50 , H02P2209/01
摘要： A motor including: a stator including plural windings that form coils and are connected together at a neutral point; a switching circuit that generates a rotating magnetic field around the stator by switching of a power supply to the plurality of windings; a rotor that rotates in response to the rotating magnetic field generated around the stator; a resistor for current detection that detects a current in the switching circuit and that is disposed between the switching circuit and a grounding point; and a filter element that reduces a fluctuation in potential at the neutral point, the filter element being disposed between the neutral point and the resistor for current detection and being grounded at the grounding point via the resistor for current detection.
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公开(公告)号：US11799409B2
公开(公告)日：2023-10-24
申请号：US17310339
申请日：2019-03-04
CPC分类号： H02P27/06 , H02M7/003 , H05K7/209 , H05K7/20927
摘要： A variable frequency drive system includes a power converter with a plurality of power cells supplying power to one or more output phases, each power cell having multiple switching devices incorporating semiconductor switches; a plurality of sensors monitoring values of the power converter; and a control system in communication with the power converter and controlling operation of the plurality of power cells, the control system comprising a processor configured via executable instructions to access a first reduced order model of the power converter; receive the values provided by the plurality of sensors; analyze the values in connection with the first reduced order model to determine one or more operating modes; and output one or more determined operating modes of the power converter.
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