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公开(公告)号：US20240283362A1
公开(公告)日：2024-08-22
申请号：US18414911
申请日：2024-01-17
CPC分类号： H02M3/335 , H02M3/01 , H05B6/08 , H05B6/1209
摘要： An induction hob includes at least one heating induction coil and a switching converter. The switching converter includes a DC-bus having a high-side line, a low-side line and a plurality of half-bridge switching stages. A C-L-C resonant tank defined by the heat induction coil electrically connected in series between the two capacitors is installed on the circuit board and is connected between two intermediate current terminals of two half-bridge switching stages. Each capacitor is connected in series to the induction heating coil and to the intermediate current terminal of a respective half-bridge switching stage, wherein the C-L-C resonant tank may be magnetically coupled with a respective load. The intermediate current terminal of each half-bridge switching stage is directly connected to a capacitor. Each half-bridge switching stage and the respective capacitor directly connected thereto are installed on the same circuit board.
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公开(公告)号：US20240250602A1
公开(公告)日：2024-07-25
申请号：US18596214
申请日：2024-03-05
发明人： Ionel Jitaru
CPC分类号： H02M1/083 , H02M1/4258 , H02M3/155 , H02M3/335 , H02M3/33553 , H02M3/33592 , H01F38/42 , H02M1/0058 , H02M1/342 , Y02B70/10
摘要： A switching power conversion apparatus for converting power from an input voltage source to a load includes first and second switches connected to a switching node. An inductive element has a magnetizing current connected to the node, and the inductive element is connected to deliver energy via the first and second switches from the input voltage to the load during a succession of power conversion cycles. A capacitance connected to the node resonates with the inductive element to cause parasitic oscillation. A clamp subcircuit across the inductive element contains an auxiliary switch to trap energy and prevent parasitic oscillation, wherein the auxiliary switch is complementary to the first switch. A controlled voltage source injects energy in the inductive element, when the auxiliary switch turns off to discharge the parasitic capacitance by using trapped energy in the inductive element in addition to injected energy from the controlled voltage source.
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公开(公告)号：US12036893B2
公开(公告)日：2024-07-16
申请号：US17570057
申请日：2022-01-06
申请人： DENSO CORPORATION
发明人： Naoto Kobayashi , Syuji Kurauchi , Yuuichi Handa
IPC分类号： B60L58/27 , B60L53/60 , B60L58/25 , H01M10/625 , H01M10/633 , H01M10/6567 , H01M10/6571 , H02J7/00 , H02M3/00 , H02M3/335
CPC分类号： B60L58/27 , B60L53/60 , B60L58/25 , H01M10/625 , H01M10/633 , H01M10/6567 , H01M10/6571 , H02J7/007192 , H02M3/00 , H02M3/335 , B60L2210/10 , H01M2220/20 , H02M3/33573
摘要： A power supply system includes a power conversion circuit that is connectable to a power storage unit. The power supply system includes a control unit and a heat transferring unit. The control unit supplies a current between the power storage unit and the power conversion circuit by performing on-off control of a switch that configures the power conversion circuit. The heat transferring unit absorbs heat that is generated in the power conversion circuit in accompaniment with the on-off control of the switch and transfers the heat to a temperature-increase target element. The control unit performs temperature-increase mode control in which the switch is on-off controlled such that an amount of heat that is generated in the power conversion circuit is increased when a temperature-increase request for the temperature-increase target element is present, compared to when the temperature-increase request is not present.
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公开(公告)号：US20240223088A1
公开(公告)日：2024-07-04
申请号：US18390908
申请日：2023-12-20
发明人： Kuiwei XU
CPC分类号： H02M3/335 , A61L9/22 , H01J37/32844
摘要： Disclosed are a circuit, a fan system, and a transformer for power conversion. The circuit for power conversion includes: a voltage input terminal including a positive input terminal and a negative input terminal; a transformer, a first end of the primary side of the transformer being coupled to the positive input terminal and a second end thereof being coupled to the negative input terminal; a switch, a first end of which being coupled to the negative input terminal and a second end of which being coupled to the second end of the primary side; a first output terminal; and a secondary-side rectifier module coupled between the secondary side of the transformer and the first output terminal, for outputting, at the first output terminal, an output signal with superimposed direct current and alternating current.
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公开(公告)号：US11973349B2
公开(公告)日：2024-04-30
申请号：US17374297
申请日：2021-07-13
发明人： Yanfei Yu , Hua Ni , Zongjun Yang , Shangfang Dai
CPC分类号： H02J3/38 , H01F38/42 , H02J3/381 , H02M3/005 , H02M3/24 , H02M3/335 , H02M7/00 , H02M7/06 , H02M7/217 , H02J2300/24 , Y02E10/56
摘要： Provided are a device for suppressing potential induced degradation and a system. The device includes a rectification circuit, a non-isolated voltage conversion circuit and at least one capacitor. An input terminal of the rectification circuit is connected to an output terminal of a converter, the rectification circuit is configured to rectify an alternating current outputted by the converter into a direct current, the non-isolated voltage conversion circuit is configured to perform voltage conversion on the direct current outputted by the rectification circuit, and the voltage conversion is boost conversion or voltage reverse conversion. The capacitor is connected in parallel with an output terminal of the direct current, and either a positive electrode or a negative electrode of the capacitor is grounded.
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公开(公告)号：US20240136921A1
公开(公告)日：2024-04-25
申请号：US18395479
申请日：2023-12-23
CPC分类号： H02M1/4241 , H02M1/0058 , H02M1/425 , H02M3/07 , H02M3/335 , H02M3/33576
摘要： The present invention relates to an AC-DC power converter which comprises a resonant DC-DC converter and a charge pump circuit. The charge pump circuit is configured to perform power factor correction of the AC-DC power converter by drawing current pulses at a switching frequency of the converter from an AC line voltage such that electrical charges of the current pulses vary substantially proportionally with instantaneous amplitude of the AC line voltage.
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公开(公告)号：US11967927B2
公开(公告)日：2024-04-23
申请号：US18107016
申请日：2023-02-08
申请人： OMRON Corporation
发明人： Takahiro Takeyama , Ryo Ogura , Jeongho Baik , Jun Nakaichi , Tsuyoshi Uchida , Tomoko Endo , Erica Martin
摘要： A solar power generation system includes a string, an inverter a first shut-off device, and a second shut-off device. The string includes a plurality of solar cell module groups connected in series with each other. Each of the solar cell module groups includes one or a plurality of solar cell modules connected in series. The first shut-off device cuts off a connection between the plurality of solar cell module groups connected to a first electric path in response to a first control signal from the inverter. The second shut-off device is connected to the first shut-off device in a two-way communicable manner, is driven by an electrical power supplied from the first shut-off device, and cuts off a connection between the plurality of solar cell module groups connected to a second electric path in response to a second control signal from the first shut-off device.
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公开(公告)号：US20240128837A1
公开(公告)日：2024-04-18
申请号：US18380157
申请日：2023-10-13
申请人： Hengchun Mao , Xuezhong Jia
发明人： Hengchun Mao , Xuezhong Jia
摘要： A device includes a plurality of phase legs configured to be coupled to a motor and arranged into at least two groups. Each group has more than one phase leg, and each phase leg has at least two power switches coupled between a positive dc rail and a negative dc rail of the group. The motor has a stator and a rotor configured to be magnetically coupled through an air gap and a plurality of phase windings distributed along a perimeter of the stator. Each of the plurality of phase windings is coupled to one of the plurality of phase legs. The device also has a first dc link switch placed between the dc rails of a group and the dc rails of another group, and a controller configured to close the first dc link switch for the device to operate in a motor drive mode, or open the dc link switch for the device to operate in a power conversion mode.
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公开(公告)号：US20240055171A1
公开(公告)日：2024-02-15
申请号：US18260943
申请日：2022-02-02
发明人： Takashi KUMAGAI , Kazuaki FUKUI , Yoshiaki YAMAMOTO , Kazufumi TANAKA , Kenji ASAI , Kazuya OHASHI , Koji ISHIHARA
CPC分类号： H01F27/08 , H01F27/2823 , H01F27/24 , H02M7/537 , H02M3/335
摘要： A transformer includes a core group and a winding group. Each of a plurality of winding layers penetrates through a plurality of closed magnetic circuits formed by a plurality of cores. When viewed from the top, the cores are disposed with spacing along conductor wires through which current of the winding layers flows, and the winding layers are disposed side by side from the inside to the outside with spacing along a direction intersecting the direction of current. With this configuration, a coil device with good heat dissipation performance, compact size, high efficiency, and low costs can be provided.
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公开(公告)号：US20240047126A1
公开(公告)日：2024-02-08
申请号：US18229029
申请日：2023-08-01
发明人： Da Jin , Litao Qian , Yuanyuan Li , Hongyu Zhai
摘要： A magnetic device for a power conversion module is provided. The magnetic device includes a magnetic core assembly. The magnetic core assembly includes an upper magnetic cover, a lower magnetic cover, a first magnetic leg, a second magnetic leg and a channel. The lower magnetic cover includes a first opening and a second opening. The first magnetic leg is disposed between the upper magnetic cover and the lower magnetic cover. The second magnetic leg is disposed between the upper magnetic cover and the lower magnetic cover. The channel is disposed between the first magnetic leg and the second magnetic leg. When the upper magnetic cover and the lower magnetic cover are locked on a circuit board, the first magnetic leg and the second magnetic leg are included in a projection region of the upper magnetic cover with respect to the lower magnetic cover.
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