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公开(公告)号：US12123900B2
公开(公告)日：2024-10-22
申请号：US17443998
申请日：2021-07-29
IPC分类号： G01R21/06 , G01K7/22 , G01K7/42 , G01K13/00 , G01R21/14 , H02P27/06 , H02P27/08 , H02P29/68 , G05F3/02 , H02M1/00 , H02M1/32 , H02M5/293 , H02M5/458 , H02M7/00 , H02M7/5387 , H02P21/22
CPC分类号： G01R21/14 , G01K7/22 , G01K7/427 , G01K13/00 , G01R21/06 , H02P27/06 , H02P27/08 , H02P29/68 , G05F3/02 , H02M1/00 , H02M1/327 , H02M5/293 , H02M5/458 , H02M7/003 , H02M7/53871 , H02P21/22
摘要： A power conversion device includes a power conversion circuit including a temperature sensor configured to detect a temperature at a sensor position and a switch configured to switch a connection on and off at a switch position separated from the sensor position; a loss calculation processing circuitry configured to calculate a power loss in the switch; a loss correction processing circuitry configured to correct a calculation result of the power loss on the basis of a detection result of the temperature at the sensor position; a temperature correction processing circuitry configured to correct the detection result of the temperature on the basis of the calculation result of the power loss; and a temperature estimation processing circuitry configured to estimate a temperature at the switch position on the basis of a corrected calculation result of the power loss and a corrected detection result of the temperature.
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公开(公告)号：US12119764B2
公开(公告)日：2024-10-15
申请号：US17744897
申请日：2022-05-16
发明人： Mehrdad Yazdanian , Younes Sangsefidi , Kang Wang , Chou Yeh
CPC分类号： H02P23/14
摘要： Systems and methods for estimating input current are provided, particularly when input currents are applied to an electric motor of a motor system. An Electric Control Unit (ECU), according to one implementation, is configured to control the motor system. The ECU is configured to store computer logic having instructions that, when executed, cause one or more processing devices to obtain a duty cycle parameter at an output of the ECU. The duty cycle parameter, for example, relates to control actions enforced on one or more switches of a power electronics circuit of the motor system. Based on the duty cycle parameter, the instructions further cause the one or more processing devices to estimate an input current provided to the electric motor of the motor system. A more accurate input current estimation may thereby be used to better estimate torque.
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公开(公告)号：US12105149B2
公开(公告)日：2024-10-01
申请号：US17504770
申请日：2021-10-19
IPC分类号： G01R31/34 , B25D17/08 , B27B17/08 , H02K11/20 , H02K11/35 , H02K15/00 , H02P27/08 , H03K17/687
CPC分类号： G01R31/343 , G01R31/34 , G01R31/346 , H02P27/08 , H03K17/6871 , B25D17/08 , B25D2250/095 , B25D2250/221 , B25D2250/265 , B27B17/08 , H02K11/20 , H02K11/35 , H02K15/00 , H03K2217/0063 , H03K2217/0072
摘要： Power tool devices described herein include a housing, a power source interface, a field effect transistor within the housing connected between the power source interface and a load of the power tool device, and an electronic processor coupled to the field effect transistor. The electronic processor is configured to control the field effect transistor to drive the load and measure a voltage at a terminal of the field effect transistor. The electronic processor is also configured to determine the current flowing through the field effect transistor based on the voltage without using a shunt resistor.
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公开(公告)号：US12095395B2
公开(公告)日：2024-09-17
申请号：US17754772
申请日：2020-10-21
发明人： Takayuki Miyajima
CPC分类号： H02P27/08 , H02M1/126 , H02M7/5395 , H02P21/05 , H02P21/22
摘要： A power conversion apparatus that converts an input alternating current power supplied from an alternating current power supply into an output alternating current power having a predetermined voltage and frequency, includes an inverter circuit configured to supply the output alternating current power to a motor, and a compensation unit configured to compensate for a harmonic of an input power of the motor, and the compensation unit detects a harmonic component generated in synchronism with a speed of the motor in the input power, and varies a phase of an alternating current voltage output from the inverter circuit at the same frequency as the harmonic component, so as to reduce the harmonic component.
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公开(公告)号：US12095388B2
公开(公告)日：2024-09-17
申请号：US17951522
申请日：2022-09-23
申请人： DENSO CORPORATION
发明人： Atsuyuki Hiruma , Yuuki Kubo
CPC分类号： H02M7/5395 , H02M1/0009 , H02M1/14 , H02M3/24 , H02P21/22 , H02P27/08
摘要： In a power conversion system, a power converter includes a power conversion circuit connected to a direct current (DC) source via a DC distribution line and converts and supplies received DC power to a load, and a power conversion control unit. A power stabilizing device is disposed between the DC distribution line and the power converter and stabilizes a DC voltage applied from the DC power source. A control power source of the power stabilizing device performs current control of the current transformer to suppress DC magnetization caused by a DC current component of the primary current while compensating for a varying component of the DC voltage. The control power source acquires current information or voltage information calculated from control information used by the power conversion control unit for control operations related to energization of the load and uses it as control information for the power stabilizing device.
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公开(公告)号：US20240300658A1
公开(公告)日：2024-09-12
申请号：US18488378
申请日：2023-10-17
IPC分类号： B64D27/24 , B60L15/06 , B60L15/38 , B64C27/54 , B64C29/00 , B64D33/08 , B64D35/02 , F16B2/06 , F16H57/08 , H02K1/27 , H02K1/32 , H02K5/124 , H02K5/20 , H02K7/00 , H02K7/08 , H02K7/116 , H02K9/19 , H02K11/33 , H02K15/03 , H02M7/5395 , H02P21/00 , H02P25/16 , H02P27/06 , H02P27/08
CPC分类号： B64D27/24 , B60L15/06 , B60L15/38 , B64C27/54 , B64C29/0008 , B64C29/0033 , B64D33/08 , B64D35/02 , F16B2/06 , F16H57/08 , H02K1/27 , H02K1/32 , H02K5/124 , H02K5/203 , H02K7/08 , H02K7/116 , H02K9/19 , H02K11/33 , H02K15/03 , H02M7/5395 , H02P21/50 , H02P25/16 , H02P27/06 , H02P27/08 , B60L2200/10 , B60L2210/40 , H02K7/006
摘要： A system includes a first frame for mounting to the aircraft; a second frame for mounting the proprotor, the second frame being rotatably mounted to the first frame; a first gear located along the rotation axis of the second frame and fixed in position relative to the first frame; a pinion that moves with the second frame and engages the first gear such that the pinion revolves around the first gear, causing the pinion to rotate; a cam that is fixedly connected to the pinion such that the cam rotates with the pinion; and a control rod operatively coupled at a first end with the cam such that rotation of the cam can cause translation of the control rod, wherein the control rod can be coupled at a second end to the blades of the proprotor such that translation of the control rod alters the pitch of the blades.
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公开(公告)号：US20240291417A1
公开(公告)日：2024-08-29
申请号：US18565657
申请日：2022-02-15
申请人： HITACHI ASTEMO, LTD.
IPC分类号： H02P27/08 , H02P23/14 , H02P25/026
CPC分类号： H02P27/085 , H02P23/14 , H02P25/026
摘要： An inverter control device performs pulse width modulation by selecting one of a synchronous pulse control mode in which a frequency of a carrier wave used in the pulse width modulation is changed in accordance with a rotation speed of the motor and an asynchronous pulse control mode in which the frequency of the carrier wave is constant regardless of the rotation speed of the motor. At the time of switching from the asynchronous pulse control mode to the synchronous pulse control mode, the inverter control device changes a carrier reference phase that is a reference value of a phase of the carrier wave to a different value before and after the switching.
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公开(公告)号：US12074550B2
公开(公告)日：2024-08-27
申请号：US17780836
申请日：2020-11-24
发明人： Panagiotis Mantzanas , Daniel Kübrich , Thomas Dürbaum , Alexander Bucher , Alexander Pawellek , Christian Hasenohr , Harald Hofmann
IPC分类号： H02P27/08 , H02M1/08 , H02M7/5387
CPC分类号： H02P27/08 , H02M1/08 , H02M7/53871
摘要： A control device (8) for an inverter (2) that feeds an electric machine (3), wherein the control device (8) is configured to provide pulse-width modulated switching signals (15) for driving switching elements (12) of the inverter (2), wherein the control device (8) is configured to determine a modulation type by means of which the pulse-width modulated switching signals (15) are generated depending on operating point information that describes an operating point defined by at least one operating parameter, and to use a first modulation type in at least one first operating region (21, 28, 30, 31) and a second modulation type in another operating region (32, 32a, 32b).
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公开(公告)号：US12068706B2
公开(公告)日：2024-08-20
申请号：US17883865
申请日：2022-08-09
申请人： DENSO CORPORATION
发明人： Tomohisa Sano
摘要： A control device is provided which controls an electric drive system, which has a motor that rotates a rotor blade and an inverter circuit that has a switching element and controls the motor and which is installed in a flying body. The control device includes an abnormality occurrence detection unit that detects occurrence of a predetermined abnormality accompanied with an abnormality of temperature of the switching element, and a switching element control unit that controls, when the occurrence of the predetermined abnormality is detected, the switching element so as to reduce loss in the switching element.
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公开(公告)号：US12068705B2
公开(公告)日：2024-08-20
申请号：US17440515
申请日：2019-08-13
发明人： Byung Geuk Cho
IPC分类号： H02P27/08 , H02M7/5395 , H02P25/026
CPC分类号： H02P27/08 , H02M7/5395 , H02P25/026
摘要： An apparatus and a method for inverter control are disclosed. A method according to an embodiment of the present disclosure comprises: discretizing, in a continuous time domain, a voltage equation for a motor in a stationary coordinate system in which a zero-order hold and time delay is reflected; and determining a voltage equation for the motor in a synchronous coordinate system in a discrete time domain by reflecting the position and speed of a rotor of the motor.
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