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公开(公告)号：US12126263B2
公开(公告)日：2024-10-22
申请号：US17704618
申请日：2022-03-25
申请人： ROHM CO., LTD.
发明人： Tatsuya Yanagi , Hirotaka Otake
IPC分类号： H02M3/158 , H02M1/08 , H02M7/5395
CPC分类号： H02M3/1588 , H02M1/08 , H02M7/5395
摘要： A power conversion circuit in which a switching transistor and a synchronous rectifier transistor are connected in series, and a source inductance of the switching transistor is smaller than a source inductance of the synchronous rectifier transistor.
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公开(公告)号：US12107435B2
公开(公告)日：2024-10-01
申请号：US18191512
申请日：2023-03-28
发明人： Hangseok Choi
IPC分类号： H02J50/12 , H02J50/80 , H02M7/5395
CPC分类号： H02J50/12 , H02J50/80 , H02M7/5395 , H02J2207/20
摘要： An electronic device utilizing a wireless charging system is provided. The electronic device includes a power source, a transmission coil, a full-bridge inverter electrically connected to the power source and the transmission coil, and a control circuit which communicates with an external device through the transmission coil, and controls the full-bridge inverter to transmit a power signal through the transmission coil. The control circuit may: receive, from the external device, a first control signal requesting that the power of the power signal be reduced to less than a specified power, in response to the first control signal, adjust the duty cycle of each of first to fourth gate signals for controlling the full-bridge inverter, and switch to a pulse width modulation (PWM) drive state in which an operation according to a first period and an operation according to a second period are alternately repeated.
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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：US12081112B2
公开(公告)日：2024-09-03
申请号：US17785596
申请日：2019-12-25
IPC分类号： H02M1/12 , H02M1/00 , H02M1/32 , H02M7/483 , H02M7/5395
CPC分类号： H02M1/12 , H02M1/0025 , H02M1/325 , H02M7/4833 , H02M7/4835 , H02M7/5395
摘要： A power converter includes at least one arm having a plurality of converter cells cascaded to each other. Each of the converter cells includes a pair of input/output terminals, a plurality of switching elements, and a power storage element. The power storage element is electrically connected to the input/output terminals through the switching elements. A control device generates a control signal for controlling on and off of the switching elements of each converter cell. The control device generates the control signal by pulse width modulation control based on a modulation command signal including an AC component having a fundamental frequency and corresponding to a command value of an output voltage between the input/output terminals, in each converter cell, such that a harmonic component included in the output voltage and having a predetermined frequency that is an integer multiple of the fundamental frequency is suppressed.
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公开(公告)号：US20240291401A1
公开(公告)日：2024-08-29
申请号：US18573030
申请日：2022-06-15
申请人： ALSTOM Holdings
IPC分类号： H02M7/5395 , G06F1/14 , G06F13/42
CPC分类号： H02M7/5395 , G06F1/14 , G06F13/4282
摘要： A pulse width modulation system including a plurality of module building blocks. A master control board includes a master board timer to generate a clock signal having a master timer rate. Each of slave control boards includes a slave board timer and is configured to determine a fictive master board timer based upon timer information received from the master control board via a communication bus, and further to synchronize the timer rate of the slave board timer to the master timer rate. The timer information includes timer offset information defining a time offset between the master board timer and the slave board timer The slave control board applies the time offset in control of pulse width modulated phase outputs such that the position of a slave pulse width modulated phase output signal is controlled in relation to the fictive master board timer.
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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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公开(公告)号：US20240266946A1
公开(公告)日：2024-08-08
申请号：US18030803
申请日：2022-10-26
发明人： Yiming WANG , Po XU , Wenping ZHANG , Wanshuang LIN , Kun XIA , Xu CAI
IPC分类号： H02M1/32 , H02H7/122 , H02M7/483 , H02M7/5395
CPC分类号： H02M1/32 , H02H7/1227 , H02M7/483 , H02M7/5395
摘要： The present disclosure discloses a T-shaped three-level overload operating system, including a three-level topology and an overload mode switching system. The topology is connected with a first device group and a second device group which form a T shape; the first device group is designed with an overload capacity, and the second device group is designed with a rated capacity; and the overload mode switching system is configured for being connected to the topology to control the first device group to perform overload two-level operation on the topology, or to control the second device group to perform normal three-level operation on the topology, so that the number of device groups of the overload design can be effectively reduced, and then the cost of the system can be reduced. A working method of the T-shaped three-level overload operating system is further disclosed. The topology can be rapidly switched among working modes according to an output current of the topology.
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公开(公告)号：US12034391B2
公开(公告)日：2024-07-09
申请号：US17862753
申请日：2022-07-12
发明人： Kang Ho Jeong , Jong Kyong Lim , Suk Hyun Lim , Ji Woong Jang , Beom Sik Kim , Sang Cheol Shin
CPC分类号： H02P25/18 , H02M7/5395 , H02P6/08 , H02P25/22 , H02P27/06
摘要： A motor-driving apparatus for driving a motor having a plurality of windings respectively corresponding to a plurality of phases is provided. The motor-driving apparatus includes a first inverter having a plurality of first switching devices and connected to first ends of the plurality of windings and a second inverter having a plurality of second switching devices and connected to second ends of the plurality of windings. A third switching device is configured to selectively connect and disconnect points at which a number of turns of each of the windings is divided in a preset ratio. A controller is configured to adjust an on/off state of the first to third switching devices based on required output of the motor.
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