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    APPARATUS FOR POWER CONVERSION AND METHOD FOR OPERATING THE APPARATUS
    1.
    发明公开
    APPARATUS FOR POWER CONVERSION AND METHOD FOR OPERATING THE APPARATUS 审中-公开

    公开(公告)号：EP4439899A1

    公开(公告)日：2024-10-02

    申请号：EP23168536.3

    申请日：2023-04-18

    Applicant: Hitachi Energy Ltd

    Inventor： HUANG, Xing ,  YANG, XiaoBo ,  TUCKEY, Andrew Mark

    IPC: H02J1/00 ,  H02J1/10 ,  H02M7/483 ,  H02M1/00

    CPC classification number: H02J1/102 ,  H02J1/002 ,  H02M1/0077 ,  H02M1/0093 ,  H02M3/33507 ,  H02M1/0074 ,  H02M1/10 ,  H02M3/33584

    Abstract: An apparatus for power conversion and a method for operating the apparatus are provided. The apparatus comprises: at least one of a first partial power converter (PPC) string and a second PPC string, wherein the first PPC string comprising more than one series-connected PPCs, wherein respective second port of the more than one series-connected PPCs are connected in series to further connect to a DC bus; and wherein the second PPC string comprising at least one series-connected PPC and at least one PPC set, wherein each PPC set comprises more than one parallel-connected PPCs, the respective second ports of the more than one parallel-connected PPCs are connected in parallel and further connected to a port of the PPC set, and respective second ports of the at least one series-connected PPC and the port of the at least one PPC set are connected in series to further connect to the DC bus.

    CROSS CONDUCTION PREVENTION IN POWER CONVERTERS
    2.
    发明公开
    CROSS CONDUCTION PREVENTION IN POWER CONVERTERS 审中-实审

    公开(公告)号：EP4418519A1

    公开(公告)日：2024-08-21

    申请号：EP24157748.5

    申请日：2024-02-15

    Applicant: Power Integrations, Inc.

    Inventor： Nayaknur, Akshay

    IPC: H02M3/335 ,  H02M1/32 ,  H02M1/38 ,  H02M1/00

    CPC classification number: H02M3/33507 ,  H02M3/33592 ,  H02M1/0003 ,  H02M1/0058 ,  H02M1/32 ,  H02M1/38 ,  H02M1/0038

    Abstract: A controller for a power converter includes a primary controller and a secondary controller. The primary controller is coupled to a primary winding of the energy transfer element and a primary switch of the power converter. The secondary controller is coupled to a secondary winding of the energy transfer element and a secondary switch, e.g., a synchronous rectifier, of the power converter. The secondary controller has a synchronous rectifier control/drive circuit, a control logic circuit, and a cross conduction detector circuit. Cross conduction is when the primary switch turns on when the secondary switch is active. The cross-conduction detector circuit produces a Disable SR signal when cross conduction event detected. The cross-conduction detector circuit detects zero voltage switching cross conduction event and a minimum conduction period cross conduction event. The SR drive circuit disables the synchronous rectifier in response to receiving the Disable SR signal.

    POWER SUPPLY DEVICE WITH HIGH OUTPUT STABILITY
    4.
    发明公开
    POWER SUPPLY DEVICE WITH HIGH OUTPUT STABILITY 审中-实审

    公开(公告)号：EP4372973A1

    公开(公告)日：2024-05-22

    申请号：EP23155469.2

    申请日：2023-02-07

    Applicant: Acer Incorporated

    Inventor： CHAN, Tzu-Tseng

    IPC: H02M1/00 ,  H02M1/14 ,  H02M1/15 ,  H02M3/335

    CPC classification number: H02M1/0035 ,  H02M1/143 ,  H02M1/15 ,  H02M3/33507 ,  H02M1/0043 ,  H02M1/0077

    Abstract: A power supply device with high output stability includes a bridge rectifier, a first inductor, a first power switch element, a first output stage circuit, a transformer, a second power switch element, a second output stage circuit, a compensation circuit, an MCU (Microcontroller Unit), and a PD (Power Delivery) IC (Integrated Circuit). The PD IC generates a state voltage according to a communication voltage. The MCU operates in a normal mode or a burst mode according to the state voltage. In the normal mode, the MCU controls the second output stage circuit to provide an output voltage. In the burst mode, the MCU controls the compensation circuit to provide an output voltage.

    BACK-END ENERGY STORAGE ISOLATION FLY-BACK CONVERSION APPARATUS
    5.
    发明公开
    BACK-END ENERGY STORAGE ISOLATION FLY-BACK CONVERSION APPARATUS 审中-实审

    公开(公告)号：EP4358383A1

    公开(公告)日：2024-04-24

    申请号：EP23202615.3

    申请日：2023-10-10

    Applicant: Wisetop Technology Co., Ltd.

    Inventor： LIANG, Wei-Chen ,  CHANG, Pin

    IPC: H02M1/00 ,  H02M3/155 ,  H02M3/335 ,  H02M1/42 ,  H02M3/158

    CPC classification number: H02M1/0095 ,  H02M3/1552 ,  H02M3/33507 ,  H02M3/3353 ,  H02M1/4241 ,  H02M1/4258 ,  H02M1/0064 ,  H02M1/4225 ,  H02M3/158

    Abstract: A back-end energy storage isolation fly-back conversion apparatus (10) includes a return switch (Q1), a driving switch (Q2), an energy storage capacitor (Cs), a transformer (T1), a resonant inductor (Lr), a first rectifier (104), an output capacitor (Cout), and a controller (116). The transformer (T1) includes a primary-side winding (Lm) and a secondary-side first winding (102). The return switch (Q1) is turned on by the controller (116), so that the energy storage capacitor (Cs) is charged by a primary-side current (I1) flowing through the resonant inductor (Lr), the primary-side winding (Lm), and the return switch (Q1), and the secondary-side first winding (102) is powered by the primary-side current (I1). When the primary-side current (I1) becomes negative, the energy storage capacitor (Cs) discharges through the return switch (Q1) and the primary-side winding (Lm) and continuously supplies power to the secondary-side first winding (102).

    POWER CONTROL CIRCUIT
    8.
    发明公开
    POWER CONTROL CIRCUIT 审中-公开

    公开(公告)号：EP3400643A1

    公开(公告)日：2018-11-14

    申请号：EP16882861.4

    申请日：2016-01-05

    Applicant: Redisem Ltd.

    Inventor： COULSON, David ,  JACQUES, Russell ,  VAN DER DUIJN SCHOUTEN, Niek

    IPC: H02M3/335

    CPC classification number: H02M3/33569 ,  H02M3/33507 ,  H02M2001/0009

    Abstract: There is provided a current control circuit for a power converter. The power converter has a primary circuit for receiving a supply current across a first supply rail and a second supply rail. There is a primary connection in the primary circuit. The power converter also has a secondary circuit providing an output current. There is a secondary connection in the secondary circuit. The secondary connection is connected to the primary connection. A controller controls one or more switches in the primary circuit to control the output current. The nature of the power converter is such that it has a reactive circuit which produces a reactive current. The current control circuit comprises a current sensing circuit connected to bypass or cancel the reactive current. The controller is connected to the current sensing circuit and controls the one or more switches based on a signal current sensed by the current sensing circuit.

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