公开(公告)号：EP3136580A1

公开(公告)日：2017-03-01

申请号：EP15843572.7

申请日：2015-03-02

申请人： Hitachi, Ltd.

发明人： HATTORI, Yukio ,  KAMIZUMA, Hiroshi ,  KAWASHIMA, Tetsuya ,  MIMA, Akira ,  MATSUMOTO, Daisuke ,  MABUCHI, Yuuichi

IPC分类号： H02M7/48

CPC分类号： H02M5/458 ,  H02M1/14 ,  H02M7/48

摘要： The present invention reduces the footprint of a power conversion device. A first power semiconductor module (111) and a second power semiconductor module (112) are connected to a positive conductor (152), a negative conductor (153), and an alternating-current conductor (154). An external alternating-current terminal (154T), the first power semiconductor module, the second power semiconductor module, a capacitor (121, 122), and an external direct-current terminal (131b, 132b) including an external positive terminal and an external negative terminal are arrayed on a straight line extending in the longitudinal direction of a circuit connection section. The external alternating-current terminal is disposed at one longitudinal end of the circuit connection section. The external direct-current terminal is disposed at the other longitudinal end of the circuit connection section.

摘要翻译： 本发明减小了电力转换装置的占地面积。 第一功率半导体模块（111）和第二功率半导体模块（112）连接到正导体（152），负导体（153）和交流导体（154）。 外部交流端子（154T），第一功率半导体模块，第二功率半导体模块，电容器（121,122）和外部直流端子（131b，132b），其包括外部正极端子和外部 负极端子排列在沿着电路连接部的长度方向延伸的直线上。 外部交流端子设置在电路连接部的一个纵向端。 外部直流端子设置在电路连接部的另一纵向端。

公开(公告)号：EP3136580B1

公开(公告)日：2019-09-04

申请号：EP15843572.7

申请日：2015-03-02

申请人： Hitachi, Ltd.

发明人： HATTORI, Yukio ,  KAMIZUMA, Hiroshi ,  KAWASHIMA, Tetsuya ,  MIMA, Akira ,  MATSUMOTO, Daisuke ,  MABUCHI, Yuuichi

IPC分类号： H02M7/48

公开(公告)号：EP4117162A1

公开(公告)日：2023-01-11

申请号：EP21764312.1

申请日：2021-02-25

申请人： Hitachi, Ltd.

发明人： URAI, Hajime ,  KAMIZUMA, Hiroshi ,  FURUKAWA, Kimihisa ,  NAKAO, Noriya ,  NAKATSU, Kinya

IPC分类号： H02M7/12 ,  H02M7/48

摘要： Provided is a power conversion system which can suppress a fault in a short-circuiting switch that bypasses a fault unit and enhance the reliability and redundancy of the system. The power conversion system (100) is provided with a plurality of power converter units (10) that are formed by using semiconductor switch elements and are connected in series, and comprises: switch elements (201, 211) that are provided to input terminals and/or output terminals of the power converter units (10) and bypass the power converter units (10); and overvoltage suppressing elements (202, 212) which are connected in parallel with the switch elements (201, 211) and in which conducting states are changed by an application of a prescribed voltage.

公开(公告)号：EP3125419A1

公开(公告)日：2017-02-01

申请号：EP14886893.8

申请日：2014-03-27

申请人： Hitachi, Ltd.

发明人： HATTORI, Yukio ,  KAMIZUMA, Hiroshi ,  MATSUMOTO, Daisuke ,  MIMA, Akira ,  KAWASHIMA, Tetsuya ,  MABUCHI, Yuuichi

IPC分类号： H02M7/12 ,  H02M3/155 ,  H02M7/48

摘要： To improve accessibility with respect to a power conversion unit in a power converter. The power converter includes a circuit connection part including a positive electrode conductor, a negative electrode conductor and an AC conductor, a power semiconductor module positioned in a particular direction with respect to the circuit connection part and connected to the positive electrode conductor, the negative electrode conductor and the AC conductor and a capacitor positioned in the particular direction with respect to the circuit connection part and connected to the positive electrode conductor and the negative electrode conductor. The positive electrode conductor is connected to a positive electrode conductor of another power conversion unit through a unit connection part positioned in an opposite direction of the particular direction with respect to the circuit connection part. The negative electrode conductor is connected to a negative electrode conductor of another power conversion unit through the unit connection part.

摘要翻译： 提高功率转换器中功率转换单元的可访问性。 功率转换器包括：电路连接部，其包括正极导体，负极导体和AC导体;功率半导体模块，其位于相对于电路连接部的特定方向并与正极导体连接，负极 导体和AC导体以及相对于电路连接部位于特定方向的电容器，并连接到正极导体和负极导体。 正极导体通过位于与电路连接部相反的特定方向的相反方向的单元连接部与另一功率转换单元的正极导体连接。 负极导体通过单元连接部与另一个电力转换单元的负极导体连接。

公开(公告)号：EP4406842A1

公开(公告)日：2024-07-31

申请号：EP23220636.7

申请日：2023-12-28

申请人： Hitachi, Ltd.

发明人： GAO, Hangxian ,  KAMIZUMA, Hiroshi

IPC分类号： B64D27/02 ,  B64D27/24 ,  B64D27/33 ,  B64D27/34 ,  B64D33/00 ,  B64D35/00 ,  B64D37/00 ,  B64G1/42 ,  B64G1/54

CPC分类号： B64D27/24 ,  B64D27/34 ,  B64D27/33 ,  B64D27/02 ,  B64D33/00 ,  B64D35/00 ,  B64D37/00 ,  B64G1/42 ,  B64G1/428 ,  B64G1/54

摘要： A power conversion system (200A) incorporated in a flight vehicle includes a power converter (10) having a semiconductor element stored therein. An energy storage (20) is disposed above the power converter (10) in the vertical direction, the energy storage storing a solid or liquid energy source containing a neutron attenuating material. The power converter (10) is provided with a movable mechanism (60) that moves to shift in position according to a tilt of the flight vehicle. The movable mechanism includes slider rails and a slider movable unit.

公开(公告)号：EP3125419B1

公开(公告)日：2020-09-09

申请号：EP14886893.8

申请日：2014-03-27

申请人： Hitachi, Ltd.

发明人： HATTORI, Yukio ,  KAMIZUMA, Hiroshi ,  MATSUMOTO, Daisuke ,  MIMA, Akira ,  KAWASHIMA, Tetsuya ,  MABUCHI, Yuuichi

IPC分类号： H02M7/12 ,  H02M3/155 ,  H02M7/48

公开(公告)号：EP4310870A1

公开(公告)日：2024-01-24

申请号：EP23183860.8

申请日：2023-07-06

申请人： Hitachi, Ltd.

发明人： FURUKAWA, Kimihisa ,  MABUCHI, Yuuichi ,  SHIMADA, Takae ,  HUSSAIN, Mohammed Mosaddique Nawaz ,  KAMIZUMA, Hiroshi ,  KAWAGUCHI, Yuki ,  CHOUDHURY, Abhijit ,  KANOUDA, Akihiko

IPC分类号： H01F19/08 ,  H01F38/16 ,  H01F27/34

摘要： An aspect of the present disclosure is a power conversion device including: a primary-side transformer to which a primary AC voltage is input from a primary-side circuit; and a secondary-side transformer that outputs a secondary AC voltage lower than the primary AC voltage to a secondary-side circuit. The primary-side transformer includes a primary-side primary winding to which the primary AC voltage is input, and a primary-side secondary winding to which power is transmitted from the primary-side primary winding. The secondary-side transformer includes a secondary-side primary winding constituting a closed circuit together with the primary-side secondary winding, and a secondary-side secondary winding to which power is transmitted from the secondary-side primary winding and which outputs the secondary AC voltage. The primary-side circuit and the closed circuit are connected to a common potential.

公开(公告)号：EP4224695A1

公开(公告)日：2023-08-09

申请号：EP21874899.4

申请日：2021-08-03

申请人： Hitachi, Ltd.

发明人： MOTEKI, Ryou ,  MOROOKA, Hisashi ,  TAKEDA, Shintarou ,  ABE, Makoto ,  KAMIZUMA, Hiroshi ,  NAKATSU, Kinya

IPC分类号： H02M7/48

摘要： This power conversion unit (U) includes a cooling path (11) positioned between an input-side power converter (14) and an output-side power converter (15) arranged separately on two sides that face each other. The input-side and output-side power converters (14, 15) includes a mold resin (9) filled into a space (p) on the inside of housings (5a, 5b); a switching element (1) covered by the mold resin (9), an upper electrode plate (7) connected to the switching element (1), and a heat dissipation plate (12) having insulating properties connected to the upper electrode plate (7); and a lower electrode (8) provided near the cooling path. The mold resin is an organopolysiloxane having a three-dimensionally crosslinked structure after curing, in which the elastic modulus at room temperature is 0.1 MPa or greater, and the value when the hardness after curing is 10 or greater as measured using a durometer type E.

公开(公告)号：EP3985850A1

公开(公告)日：2022-04-20

申请号：EP21199144.3

申请日：2021-09-27

申请人： Hitachi, Ltd.

发明人： URAI, Hajime ,  NAKAO, Noriya ,  KAMIZUMA, Hiroshi ,  FURUKAWA, Kimihisa ,  TOMIYASU, Kunihiko ,  NAKATSU, Kinya

IPC分类号： H02M1/00 ,  H02M1/32 ,  H02M7/08 ,  H02M7/25 ,  H02M7/23

摘要： A power conversion system is provided in which a surge current withstand specification of a short-circuit switch bypassing a failed unit can be reduced, and reliability and redundancy of the system can be improved by applying a small and economical element to the short-circuit switch.
The power conversion system includes a plurality of power converter units connected in series with use of semiconductor switching elements and, also, includes: switching elements provided in an input terminal and/or an output terminal of the power converter unit and bypassing the power converter unit; and a switching controller for controlling timing in which the switching elements are turned into a conductive state.