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    Conversion device
    1.
    发明授权
    Conversion device 有权

    公开(公告)号：US10355620B2

    公开(公告)日：2019-07-16

    申请号：US15519417

    申请日：2014-12-19

    Applicant: Sumitomo Electric Industries, Ltd.

    Inventor： Naoki Ayai ,  Toshiaki Okumura ,  Tetsuo Akita ,  Kenji Abiru

    IPC: H02J7/00 ,  H03H7/01 ,  H02M1/12 ,  H02M7/539 ,  H02M3/155 ,  H02M7/48 ,  H02S40/32 ,  H02M3/156 ,  H02M1/00 ,  H02J7/35

    Abstract: This conversion device converts DC powers from a plurality of DC power supplies, to AC power and supplies the AC power to a load. The conversion device includes: a filter circuit including an AC reactor and a first capacitor; a DC/AC inverter connected to the load via the filter circuit; DC/DC converters provided between the respective plurality of DC power supplies and the DC/AC inverter; a second capacitor provided between the DC/AC inverter and the DC/DC converters; and a control unit configured to set a current target value for each of the DC/DC converters to thereby be synchronized with current of the AC power, based on voltage of the AC power, voltage variation due to current flowing through the AC reactor and an impedance thereof, reactive currents respectively flowing through the first capacitor and the second capacitor, and voltage of each DC power.

    Inverter device
    5.
    发明授权
    Inverter device 有权

    公开(公告)号：US10277036B2

    公开(公告)日：2019-04-30

    申请号：US14891292

    申请日：2014-05-22

    Applicant: Sumitomo Electric Industries, Ltd.

    Inventor： Naoki Ayai ,  Kenji Abiru ,  Toshiaki Okumura

    IPC: H02J3/38 ,  H02M3/158 ,  H02J1/10 ,  H02M3/156 ,  H02M7/44 ,  H02M7/5387

    Abstract: An inverter device includes a circuit configuration for converting, to AC power, DC powers respectively given from a first power supply and a second power supply which outputs power with voltage lower than that of the first power supply. The inverter device includes: a first step-up circuit; a second step-up circuit; an inverter circuit connected to both step-up circuits connected in parallel to each other, the inverter circuit configured to convert powers given from both step-up circuits to AC power; and a control unit configured to multiply a power value including the AC power outputted from the inverter circuit, by a ratio of a power value of the DC power of each step-up circuit to a total power value obtained by summing the DC powers of both step-up circuits, and set a current target value for each step-up circuit based on a value obtained by the multiplication.

    CONVERSION DEVICE
    6.
    发明申请
    CONVERSION DEVICE 有权
    转换装置

    公开(公告)号：US20160268890A1

    公开(公告)日：2016-09-15

    申请号：US15032197

    申请日：2014-12-19

    Applicant: SUMITOMO ELECTRIC INDUSTRIES, LTD.

    Inventor： Naoki Ayai ,  Tetsuo Akita ,  Toshiaki Okumura ,  Kenji Abiru

    IPC: H02M3/04 ,  H02M7/44 ,  H02M1/08 ,  H02M1/42

    CPC classification number: H02M7/44 ,  H02M1/08 ,  H02M1/42 ,  H02M3/04 ,  H02M3/156 ,  H02M7/48 ,  H02M2001/0009 ,  H02M2001/007

    Abstract: Provided is a conversion device that converts DC power provided from a DC power supply, to AC power and supplies the AC power to a load, the conversion device including: a filter circuit connected to the load and including an AC reactor and a first capacitor; a DC/AC inverter connected to the load via the filter circuit; a DC/DC converter provided between the DC power supply and the DC/AC inverter; a second capacitor provided between the DC/AC inverter and the DC/DC converter; and a control unit configured to set a current target value for the DC/DC converter to thereby be synchronized with current of the AC power, based on voltage of the AC power, voltage variation due to current flowing through the AC reactor and an impedance thereof, reactive currents respectively flowing through the first capacitor and the second capacitor, and voltage of the DC power.

    Abstract translation: 提供一种转换装置，其将从直流电源提供的直流电力转换为交流电，并将交流电力提供给负载，转换装置包括：连接到负载并包括交流电抗器和第一电容器的滤波器电路; 通过滤波电路连接到负载的DC / AC逆变器; DC / DC转换器，设置在DC电源和DC / AC逆变器之间; 设置在DC / AC逆变器和DC / DC转换器之间的第二电容器; 以及控制单元，其被配置为基于AC电力的电压，由于流过AC电抗器的电流引起的电压变化及其阻抗，将DC / DC转换器的电流目标值设定为与AC电力的电流同步 ，分别流过第一电容器和第二电容器的无功电流以及直流电力的电压。

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