POWER RECEIVING DEVICE AND CONTACTLESS POWER TRANSMISSION SYSTEM

    公开(公告)号:US20240113565A1

    公开(公告)日:2024-04-04

    申请号:US18236557

    申请日:2023-08-22

    CPC classification number: H02J50/80 H02H9/041 H02J50/12

    Abstract: A power receiving device includes: a power receiving coil receiving power transmitted from a power transmission coil; a rectifier circuit between the power receiving coil and a load; a smoothing capacitor between the rectifier circuit and the load; and a control device executing a short-circuit mode of short-circuiting between output ends of the power receiving coil. Further, the control device includes an acquisition unit acquiring information indicating a drive frequency of an inverter in the power transmission device, a setting unit setting a switching frequency of the rectifier circuit to a value different from the drive frequency of the inverter, and a control unit executing the short-circuit mode based on the switching frequency set by the setting unit.

    POWER RECEPTION DEVICE AND NON-CONTACT POWER TRANSMISSION SYSTEM

    公开(公告)号:US20240106275A1

    公开(公告)日:2024-03-28

    申请号:US18471387

    申请日:2023-09-21

    CPC classification number: H02J50/12

    Abstract: A power reception device includes: a power reception coil that receives power transmitted from a power transmission coil in a non-contact manner; and a control device that executes a short-circuit mode in which a plurality of switching elements provided between the power reception coil and a load are caused to perform switching operations to short-circuit between output terminals of the power reception coil. Further, when a phase of a current and a phase of a voltage in the power reception device are deviated from each other, the control device sets switching timings of the switching elements to the short-circuit mode in a manner that the phase of the voltage is shifted in a direction in which a power factor of power supplied to the load is deteriorated.

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