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公开(公告)号：EP4439964A1
公开(公告)日：2024-10-02
申请号：EP23165757.8
申请日：2023-03-31
申请人： Hitachi Energy Ltd
发明人： Hafner, Ying-Jiang , Kumar-Nayak, Khirod , Sahu, Malaya Kumar , Abdalrahman, Adil , Nami, Ashkan
IPC分类号： H02M7/5387 , H02M7/757 , H02M1/00 , H02J3/36
CPC分类号： H02M7/5387 , H02M7/7575 , H02M1/0003 , H02M1/0025 , H02J3/36
摘要： A converter station is provided comprising at least two converters, including a first voltage source converter and a second voltage source converter. The converter station is configured to be connected to a direct current (DC) system and to an alternating current (AC) system. The converter station further comprises converter control units connected to the first voltage source converter and to the second voltage source converter, respectively. The converter control units obtain phase currents of the first and second voltage source converters, respectively. Each converter control unit comprises a damping controller, which in turn comprises a regulator. The damping controllers determine current differences between the phase currents of the two converter stations and generate damping control signals by means of the regulators, which multiply the current differences with a gain to generate damping control signals. The converter control units combine the damping control signals with respective converter reference voltages, thereby providing modified converter reference voltages for the voltage source converters.
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公开(公告)号：EP4439957A1
公开(公告)日：2024-10-02
申请号：EP23168579.3
申请日：2023-04-18
申请人： Hitachi Energy Ltd
发明人： HUANG, Xing , YANG, XiaoBo , TUCKEY, Andrew Mark
CPC分类号： H02M3/158 , H02M1/007 , H02J3/381 , H02J3/46 , H02M1/0093
摘要： An apparatus and a system for power conversion and a method for operating the apparatus are provided. The apparatus comprises: at least one first partial power converter (PPC) string connected in parallel with a DC bus, wherein each first PPC string comprises more than one PPCs connected in series, wherein, in each first PPC string, an output of each PPC of the more than one PPCs is connected in series, and an input of each PPC of the more than one PPCs is connected to a corresponding power source, wherein, in each PPC, the input of the PPC and the output of the PPC have one common terminal.
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公开(公告)号：EP4439905A1
公开(公告)日：2024-10-02
申请号：EP23165724.8
申请日：2023-03-30
申请人： Hitachi Energy Ltd
CPC分类号： H02J3/40 , H02J3/18 , H02J3/24 , H02J3/32 , H02M7/53803
摘要： There is disclosed herein a method (100) of determining a phase angle reference (θ) for synchronizing a grid-connected voltage-source converter, VSC, (5) with a power grid (4). The VSC comprising an energy storage (3). The method (100) comprising estimating (110) an angular deviation (dω) of a VSC reference from a fundamental grid frequency, based on an amount of energy (E) stored in the energy storage (3) and determining (120) the phase angle reference (θ) based on the angular deviation (dω). There is further disclosed a control unit (10) for performing the method and a grid-connected VSC comprising the control unit.
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公开(公告)号：EP4439652A1
公开(公告)日：2024-10-02
申请号：EP23165917.8
申请日：2023-03-31
申请人： Hitachi Energy Ltd
IPC分类号： H01L23/373 , H01L23/40 , H01L25/065 , H01L23/00
CPC分类号： H01L23/3735 , H01L23/4006 , H01L23/4093 , H01L2023/407520130101 , H01L25/065 , H01L23/562
摘要： A metal substrate structure (10) for a semiconductor power module comprises a circuit metallization layer (11), a metal bottom layer (13) that coupled with the circuit metallization layer (11), and an isolating dielectric layer (12) that is coupled with and arranged between the circuit metallization layer (11) and the metal bottom layer (13) with respect to a stacking direction (A). The circuit metallization layer (11) or the dielectric layer (12) at least locally forms a top layer of the metal substrate structure (10), and the top layer and the bottom layer (13) comprise a fixation area (18) configured for receiving a fixing element (16) to fix the metal substrate structure (10) to a further component (14) of the semiconductor power module. At least the top layer comprises a stress relief recess (15).
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公开(公告)号：EP4439611A1
公开(公告)日：2024-10-02
申请号：EP23165588.7
申请日：2023-03-30
申请人： Hitachi Energy Ltd
发明人： KELLER, Markus M. , SOLOGUREN-SANCHEZ, Diego , STRAUMANN, Ulrich , SAXL, David , RAJPAL, Prashant
CPC分类号： H01H33/24 , H01H33/245 , H01H33/12 , H01H33/045 , H01H1/06
摘要： Embodiments herein provide a disconnector (300) for an electrical apparatus (200), comprising a first contact (310) having a longitudinal center axis and a second contact (320). At least one of the first contact (310) and the second contact (320) is movable in a direction of the longitudinal center axis of the first contact (310), the first contact (310) being connected to the second contact (320) in a closed position and disconnected from the second contact (320) in an open position. The first contact (310), at an end thereof directed towards and adjacent to the second contact (320), has a contact tip (330) comprising an ignition tip (335) at an inner opening of the first contact (310) defined by the contact tip (330), and where the ignition tip (335) protrudes from a neighbouring, surrounding part of the contact tip (330) in the direction of the longitudinal center axis.
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公开(公告)号：EP4327354B1
公开(公告)日：2024-09-25
申请号：EP22750787.8
申请日：2022-07-11
IPC分类号： H01L29/78 , H01L21/336 , H01L29/08
CPC分类号： H01L29/7802 , H01L29/0878 , H01L29/0865 , H01L29/0882 , H01L29/66712 , H01L29/42376 , H01L29/1608 , H01L29/2003
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公开(公告)号：EP4427315A1
公开(公告)日：2024-09-11
申请号：EP22812672.8
申请日：2022-11-04
申请人： Hitachi Energy Ltd
发明人： NAIDU, Od , GEORGE, Neethu , ZUBIC, Sinisa , GAJIC, Zoran
CPC分类号： H02H3/405 , H02H7/28 , G01R31/085 , G01R31/52
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公开(公告)号：EP3971592B1
公开(公告)日：2024-09-11
申请号：EP21152166.1
申请日：2021-01-18
IPC分类号： G01R31/08
CPC分类号： G01R31/086 , Y04S10/52
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公开(公告)号：EP3940727B1
公开(公告)日：2024-09-04
申请号：EP20185555.8
申请日：2020-07-13
CPC分类号： H01F27/025 , H01F27/12
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公开(公告)号：EP3767659B1
公开(公告)日：2024-09-04
申请号：EP19186329.9
申请日：2019-07-15
CPC分类号： H01H33/91 , H01H33/7046 , H01H2033/88820130101
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