公开(公告)号：US12229020B2

公开(公告)日：2025-02-18

申请号：US18178977

申请日：2023-03-06

Applicant: Hitachi, Ltd.

Inventor： Hiroki Fujii ,  Masahiro Arai ,  Akira Deguchi

IPC: G06F11/14

Abstract: Acquiring a snapshot of a logical volume involves generating snapshot-related catalog information including at least a location for storing actual data in the snapshot and a reference destination for identifying another snapshot in parent-child relation to the snapshot, and storing the actual data in the snapshot to the physical storage device and/or to the cloud service. In a case where at least one of a plurality of snapshots is to be designated and restored, catalog information is referenced to identify the storage location of the actual data and acquire the actual data stored in the physical storage device and the actual data not stored in the physical storage device from the cloud service.

公开(公告)号：US20250055329A1

公开(公告)日：2025-02-13

申请号：US18718678

申请日：2022-11-14

Applicant: Hitachi, Ltd.

Inventor： Matahiro KOMURO ,  Tomohiro TABATA ,  Yusuke ASARI ,  Shohei TERADA

IPC: H02K1/02

Abstract: Provided are a laminated iron core that can reduce excessive increase in an iron loss while exhibiting saturation magnetic flux density higher than that of an electromagnetic pure iron plate, and can be made at lower cost than permendur, and a rotating electric machine using the laminated iron core. A laminated iron core according to the present invention is a laminated iron core in which a plurality of types of soft magnetic iron plates are laminated. The plurality of types of the soft magnetic iron plates include a first soft magnetic iron plate and a second soft magnetic iron plate, the first soft magnetic iron plate and the second soft magnetic iron plate are alternately laminated, the first soft magnetic iron plate has higher nitrogen content and higher saturation magnetic flux density than the second soft magnetic iron plate, and the second soft magnetic iron plate has lower coercive force than the first soft magnetic iron plate.

公开(公告)号：US20250053575A1

公开(公告)日：2025-02-13

申请号：US18597755

申请日：2024-03-06

Applicant: Hitachi, Ltd.

Inventor： Miho KOBAYASHI ,  Soichi WATANABE ,  Mitsuo HAYASAKA ,  Shimpei NOMURA

IPC: G06F16/27

Abstract: A support device and method capable of supporting construction of an optimal secondary usage environment for data are proposed.
A plurality of construction candidate plans for a secondary usage environment including a copy method for copying the data between a designated copy source site and a designated copy destination site of the data are calculated. A time and a cost required for copying the data and an operation cost of the secondary usage environment to be constructed are calculated for each of the calculated construction candidate plans,, and the plurality of construction candidate plans based on a calculation result together with evaluations thereof are presented.

公开(公告)号：US20250050586A1

公开(公告)日：2025-02-13

申请号：US18724042

申请日：2022-11-09

Applicant: HITACHI, LTD.

Inventor： Hirotsugu KAWANAKA ,  Tomonori KIMURA ,  Isamu TAKAHASHI ,  Yusuke YASUDA ,  Seunghwan PARK

IPC: B29C64/393 ,  B29C64/153 ,  B33Y50/02 ,  G06F30/27 ,  G06F113/10

Abstract: An additive manufacturing condition search device includes a defect database that accumulates a material, shape information, an additive manufacturing condition, monitoring information during modeling, and defect information in association with each other, a first machine learning unit that outputs an additive manufacturing condition corresponding to material information and device information, and outputs a new additive manufacturing condition from a combination of a plurality of the additive manufacturing conditions and the defect information, a specification unit that causes an additive manufacturing apparatus to perform modeling by the additive manufacturing condition, acquires the monitoring information during modeling, and acquires the shape information and the defect information by inspection of a modeled object, a second machine learning unit in which a model trained by using the defect database as train data estimates defect information of the modeled object from the monitoring information and stores the defect information in the defect database, and a determination unit that determines whether or not the defect information of the modeled object has achieved an evaluation target value.

公开(公告)号：US20250047195A1

公开(公告)日：2025-02-06

申请号：US18842831

申请日：2023-01-06

Applicant: HITACHI, LTD.

Inventor： Hiroshi KAMIZUMA ,  Takae SHIMADA ,  Kimihisa FURUKAWA ,  Yuki KAWAGUCHI ,  Yuuichi MABUCHI

IPC: H02M1/32 ,  H02M1/00 ,  H02M7/12

Abstract: The power conversion unit diagnosis system has: a plurality of power conversion units that supply the DC power to at least one load and are connected in series with each other; a control unit that controls the plurality of power conversion units; and an output side switching unit that enables the output portions of at least some of the plurality of power conversion units to be connected in parallel with one load. When the output portions of at least some of the plurality of power conversion units are connected in parallel with the one load, the control unit determines the state of each of the plurality of power conversion units and diagnoses, on the basis of the state, whether the characteristics of each of the plurality of power conversion units are degraded or not.

公开(公告)号：US20250044779A1

公开(公告)日：2025-02-06

申请号：US18436829

申请日：2024-02-08

Applicant: Hitachi, Ltd.

Inventor： Takehiro HAGIWARA ,  Hitoshi ISHIDA ,  Riku KAWAMURA ,  Ikumi INOUE ,  Tomohiro MATSUDA ,  Hiroki MIYAMOTO

IPC: G05B19/418 ,  G06F16/25 ,  G06Q50/04

Abstract: Proposed are a process model creation system, a process model creation method and a process model creation program capable of reducing the man-hours required for generating a process model without having to prepare a process model for each of the plurality of business systems. The present invention comprises a data structure conversion unit which converts each data of each business system into a data structure of a common BOP (Bill of Process), a model generation unit which creates a plurality of adapter models from the data structure of the common BOP, and a process model synthesis unit which extracts differences between the plurality of adapter models and creates a synthesis process model.

公开(公告)号：US12216930B2

公开(公告)日：2025-02-04

申请号：US18198731

申请日：2023-05-17

Applicant: Hitachi, Ltd.

Inventor： Akira Deguchi ,  Nobuhiro Yokoi ,  Hiroka Ihara

IPC: G06F3/06

Abstract: A primary storage system reads a plurality of journal data, and performs collective compression that is compression of data that is at least a part of the plurality of pieces of journal data in the plurality of journals and is larger than a size of one journal data. The collectively compressed data, which is a plurality of pieces of journal data subjected to collective compression, is a transfer target from the primary storage system to the secondary storage system. The journal is journal data and metadata including a write order of the journal data and associated with the journal data. The journal data is a copy of data written in the primary volume. The secondary storage system acquires a plurality of pieces of journal data by decompressing one or more pieces of collectively compressed data, and writes the plurality of pieces of journal data to the secondary volume.

公开(公告)号：US20250037911A1

公开(公告)日：2025-01-30

申请号：US18717102

申请日：2022-11-18

Applicant: Hitachi, Ltd.

Inventor： Tomohiro TABATA ,  Matahiro KOMURO ,  Yusuke ASARI ,  Shohei TERADA

IPC: H01F1/147 ,  C22C38/00 ,  C22C38/24 ,  C22C38/30 ,  H02K1/02

Abstract: Provided are a soft magnetic iron alloy plate that can suppress an excessive increase in Pi while exhibiting Bs higher than that of an electromagnetic pure iron plate and reduce the cost as compared with permendur, an iron core using the soft magnetic iron alloy plate, and a rotating electric machine. The soft magnetic iron alloy plate according to the present invention includes a chemical composition containing Co by 1 to 30 atom %, N by 0.2 to 10 atom %, an M component that can form an MN-type nitride by 0.5 to 5 atom %, with the balance being Fe and impurities, and when a cross section of the soft magnetic iron alloy plate is observed, nitride particles of the M component are deposited with an average particle size of 0.5 μm or less and a number density of 50 particles/100 μm2 or less.

公开(公告)号：US12210781B2

公开(公告)日：2025-01-28

申请号：US17947811

申请日：2022-09-19

Applicant: Hitachi, Ltd.

Inventor： Katsuya Tanaka ,  Yutaro Kobayashi ,  Hideaki Fukuda

IPC: G06F3/06 ,  H04L67/1097

Abstract: A storage apparatus includes a plurality of storage controllers. Each of the plurality of storage controllers includes a controller interface for connecting the storage controllers. The controller interface includes one or more logical ports corresponding to each storage controller of the connection destination. When converting the first request of the first protocol used in the storage controller into the second request of the second protocol used in the inter-storage controller network, the controller interface stores the identification information of the first request and the identification information of the second request in the send queue of the logical port.

公开(公告)号：US20250030371A1

公开(公告)日：2025-01-23

申请号：US18274153

申请日：2021-12-28

Applicant: Hitachi, Ltd.

Inventor： Yasuo NOTOHARA ,  Agnes HADINATA ,  Dongsheng LI ,  Takahiro SUZUKI

IPC: H02P27/12 ,  B60L15/00

Abstract: Disclosed are a motor control apparatus, a motor drive apparatus and a device that uses the same, with which, even if the electrical angular frequency is high, it is possible to detect a motor current fundamental wave component with high accuracy and to perform drive control on a motor in a stable manner. On the basis of a speed command (ω*) and a detected value (Iuvw) for motor current, this motor control apparatus creates a control signal (PWM) for controlling a motor (4) and comprises: a phase current detection means which detects the phase current of the motor; and a fundamental wave component extraction means (5) which extracts a fundamental wave component for the motor phase current detected by the phase current detection means. The fundamental wave component extracted by the fundamental wave component means is used as the detected value for motor current to create the control signal.