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公开(公告)号：US20250132088A1
公开(公告)日：2025-04-24
申请号：US18490574
申请日：2023-10-19
Applicant: Hamilton Sundstrand Corporation
Inventor： Bo Liu , Parikshith Channegowda
Abstract: A tunable inductor is provided including a core having a closed shape and including first through third legs. A first winding wound around the first leg is coupled to a first controller configured to provide DC power to the first winding. The first winding is configured to generate a DC flux in a DC flux path in response to the DC power, the DC flux path passing through a first magnetoelectric material coupled to the core. A second winding wound around the second leg is coupled to the first controller and is configured to generate the DC flux in response to the DC power. A third leg between the first leg and the second leg is coupled to an AC power source configured to provide AC power to the third winding. The third winding is configured to generate AC flux in an AC flux path based on the AC power.
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公开(公告)号：US20220393585A1
公开(公告)日：2022-12-08
申请号：US17342229
申请日：2021-06-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Yongduk Lee , Xin Wu , Parag M. Kshirsagar , Bo Liu
Abstract: Systems and methods of operating for a smart power router for boosting and protection are provided. Aspects include a power router comprising a plurality of terminals, a first DC power supply coupled to the first terminal, a second DC power supply coupled to the second terminal, a first power converter, an interface bi-directional switch coupled between the first terminal and the second terminal, a first bi-directional switch coupled between the first terminal and the third terminal, the first bi-directional switch comprising a first transistor and a second transistor, a first RL circuit, a controller configured to operate the power router in a plurality of modes comprising a first voltage boosting mode, wherein operating the power router in the first voltage boosting mode comprises operating the interface bi-directional switch in an on state, operating the first transistor in an off state, and operating the second transistor in a switching state.
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公开(公告)号：US20210351770A1
公开(公告)日：2021-11-11
申请号：US17246839
申请日：2021-05-03
Applicant: Hamilton Sundstrand Corporation
Inventor： Bo Liu , Yongduk Lee , Xin Wu
IPC: H03K17/082 , H02H1/00 , H03K5/01
Abstract: A desaturation protection circuit is provided. Aspects includes a main gate driver circuit driving a gate for a switch, a desaturation gate driver circuit coupled to a drain terminal of the switch, a PWM signal supply circuit configured to supply a PWM signal to the desaturation gate driver circuit, and a delay circuit, the delay circuit configured to delay the PWM signal from the PWM signal supply circuit to the desaturation gate driver circuit during a turn-on event for the switch.
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公开(公告)号：US20210313900A1
公开(公告)日：2021-10-07
申请号：US17224533
申请日：2021-04-07
Applicant: Hamilton Sundstrand Corporation
Inventor： Sebastian Rosado , Robert H. Dold , Bo Liu , Xin Wu
IPC: H02M7/00 , H01L23/473
Abstract: A power converter assembly includes a semi-conductor module, a heat sink mechanically connected to the semi-conductor module, a first busbar assembly on a first side of the heat sink, and a second busbar assembly on a second side of the heat sink opposite from the first side. The first and second busbar assemblies are electrically connected to one another. A power converter assembly includes a plurality of sets of semi-conductor modules, a common heat sink mechanically connected to each semi-conductor module, a first busbar assembly on a first side of the common heat sink, and a second busbar assembly on a second side of the common heat sink opposite from the first side. The first and second busbar assemblies are electrically connected to one another.
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公开(公告)号：US20240418747A1
公开(公告)日：2024-12-19
申请号：US18336240
申请日：2023-06-16
Applicant: Hamilton Sundstrand Corporation
Inventor： Bo Liu , Xin Wu , Parikshith Channegowda , Yongduk Lee
Abstract: An analog twin circuit device includes a sensing element and a signal conditioning circuit. The sensing element includes a signal input terminal configured to receive an input signal and a signal output terminal configured to output a signal. The signal conditioning circuit includes a first circuit input terminal connected to the signal input terminal and a second circuit input terminal connected to the signal output terminal such that the sensing element interacts directly with the input signal and delivers an output signal to the signal output terminal. The signal conditioning circuit physically models the sensing element.
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Patent Agency Ranking
公开(公告)号：US20240387100A1
公开(公告)日：2024-11-21
申请号：US18317880
申请日：2023-05-15
Applicant: Hamilton Sundstrand Corporation
Inventor： Parikshith Channegowda , Bo Liu , Xin Wu
Abstract: A solid-state circuit breaker (SSCB) is provided. The SSCB includes an electrical circuit. The electrical circuit includes inductor electrical connections, a diode rectifier bridge that drives current, which enters the electrical circuit in first or second directions, across the inductor electrical connections in only one of the first direction or the second direction and an inductor. The inductor is electrically interposed between the inductor electrical connections. The inductor includes a permanent magnet arrangement configured to introduce flux pre-bias for maintaining the inductor in an out-of-saturation condition during a peak fault event.
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公开(公告)号：US11901750B2
公开(公告)日：2024-02-13
申请号：US17342221
申请日：2021-06-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Yongduk Lee , Xin Wu , Bo Liu , Parag M. Kshirsagar
CPC classification number: H02J7/0029 , B64D41/00 , H02J7/0013 , B64D2221/00
Abstract: Systems for a current limiting circuit are provided. Aspects include a first set of batteries coupled to a battery terminal, a power converter coupled to a power converter terminal, wherein the battery terminal is coupled to the power converter terminal, a first current limiting circuit in series with the first set of batteries, wherein the current limiting circuit comprises a first circuit comprising a first transistor in series with a first diode, a second circuit comprising a second transistor in series with a second diode, a first RL circuit, wherein the first RL circuit, the first circuit, and the second circuit are arranged in parallel, a controller configured to operate the first current limiter in a plurality of modes including a battery discharge mode including the controller operating the first transistor in an off state, and operating the second transistor in a switching state.
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公开(公告)号：US11770066B2
公开(公告)日：2023-09-26
申请号：US17345548
申请日：2021-06-11
Applicant: Hamilton Sundstrand Corporation
Inventor： Bo Liu , Yongduk Lee , Xin Wu , Suman Dwari
Abstract: A power converter can include a first line, a second line, a capacitor line disposed between the first line and the second line, a first capacitor and a second capacitor connected to the capacitor line in series between the first line and the second line, a midpoint line connected to a midpoint between the first capacitor and the second capacitor, and a protection circuit disposed between the first capacitor and the second capacitor and configured to provide protection to one or more portions of the power converter.
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公开(公告)号：US20220393489A1
公开(公告)日：2022-12-08
申请号：US17342221
申请日：2021-06-08
Applicant: Hamilton Sundstrand Corporation
Inventor： Yongduk Lee , Xin Wu , Bo Liu , Parag M. Kshirsagar
Abstract: Systems for a current limiting circuit are provided. Aspects include a first set of batteries coupled to a battery terminal, a power converter coupled to a power converter terminal, wherein the battery terminal is coupled to the power converter terminal, a first current limiting circuit in series with the first set of batteries, wherein the current limiting circuit comprises a first circuit comprising a first transistor in series with a first diode, a second circuit comprising a second transistor in series with a second diode, a first RL circuit, wherein the first RL circuit, the first circuit, and the second circuit are arranged in parallel, a controller configured to operate the first current limiter in a plurality of modes including a battery discharge mode including the controller operating the first transistor in an off state, and operating the second transistor in a switching state.
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公开(公告)号：US20210297009A1
公开(公告)日：2021-09-23
申请号：US16827528
申请日：2020-03-23
Applicant: Hamilton Sundstrand Corporation
Inventor： Bo Liu , Xin Wu , Yongduk Lee
IPC: H02M7/5395 , H02M7/487 , H02M7/5387 , H02M3/335 , H02P27/14 , H02P6/08
Abstract: A power conversion system includes a hybrid power converter phase unit including three voltage inputs, a voltage output, a pair of outer switches between the voltage inputs and voltage output, and a pair of inner switches between the voltage inputs and the outer switches. The power conversion system includes a controller in electrical communication with the inner and outer switches. The controller is configured to selectively disable or enable the inner switches by switching the inner switches OFF or ON. A method includes selectively disabling or enabling inner switches in a hybrid power converter phase unit with a controller such that the hybrid power converter phase unit is a 3-level converter when the inner switches are ON and enabled in a 3-level mode and a 2-level converter when the inner switches are OFF and disabled in a 2-level mode.
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