公开(公告)号：US20250054689A1

公开(公告)日：2025-02-13

申请号：US18720730

申请日：2022-12-02

Applicant: Hitachi Energy Ltd

Inventor： Gianluca Bustreo ,  Valentina Valori ,  Paolo Pavanello ,  Lorenzo Luis Prieto Colmenero

IPC: H01F27/32 ,  H01F41/04

Abstract: According to an embodiment, the spacer element for a winding of an electric device includes at least one connection member and a plurality of ribs. The ribs are connected to the connection member and are spaced from each other pairwise. The spacer element is arrangeable between two successive winding units of the winding during manufacturing of the winding. Each two adjacent ribs delimit a flow channel for a cooling fluid, said flow channel extends between and along the two adjacent ribs.

公开(公告)号：US12085453B2

公开(公告)日：2024-09-10

申请号：US17058214

申请日：2019-04-30

Applicant: Hitachi Energy Ltd

Inventor： Gianluca Bustreo ,  Roberto Zannol ,  Paolo Pavanello

IPC: G01K11/32 ,  G01H9/00 ,  G01K11/3206 ,  H01F27/28 ,  H01F27/40

CPC classification number: G01K11/3206 ,  G01H9/004 ,  H01F27/2823 ,  H01F27/402 ,  H01F2027/2838 ,  H01F2027/406

Abstract: A continuously transposed cable CTC, extending according to a longitudinal development direction (L) and having two opposite longitudinal ends, includes a plurality of strands arranged so to form at least a first and a second adjacent stacks, each extending along the longitudinal development direction (L), wherein said at least first and second stacks form a longitudinal interface therebetween. The CTC cable (1) further includes one or more optical fibers positioned at the interface between the first and the second stacks. A winding of an electromagnetic induction device, such as a transformer, can be obtained by winding said CTC cable.

公开(公告)号：US12062478B2

公开(公告)日：2024-08-13

申请号：US16605251

申请日：2017-05-10

Applicant: HITACHI ENERGY LTD

Inventor： Paolo Pavanello ,  Roberto Zannol

IPC: H01F27/20 ,  H01F27/28 ,  H02K9/197 ,  F28D21/00 ,  H01L23/46

CPC classification number: H01F27/20 ,  H01F27/28 ,  H02K9/197 ,  F28D2021/0028 ,  H01L23/46

Abstract: An electric device (1) comprises a portion generating heat and a portion for dissipating said generated heat by heat exchange with a fluid, wherein said heat dissipating portion comprises means for generating a turbulent flow in the fluid.

公开(公告)号：US11894183B2

公开(公告)日：2024-02-06

申请号：US18020299

申请日：2021-11-02

Applicant: HITACHI ENERGY LTD

Inventor： Gianluca Bustreo ,  Paolo Pavanello ,  Valentina Valori ,  Martina Perin

IPC: H01F27/30 ,  H01F5/02 ,  H01F5/00

CPC classification number: H01F5/02 ,  H01F2005/006

Abstract: A winding is provided, which comprises a form element having a longitudinal axis defining a longitudinal direction and a radial direction perpendicular to the longitudinal axis. The form element comprises a core with a lateral surface, and adjustable elements arranged on the lateral surface of the core. The adjustable elements are elongated and extend along the longitudinal direction. A thickness of the adjustable elements in a radial direction is altered along the longitudinal direction. A conductor is wound around the form element along the longitudinal direction forming turns of the winding.

公开(公告)号：US20240062943A1

公开(公告)日：2024-02-22

申请号：US18270681

申请日：2022-01-14

Applicant: HITACHI ENERGY LTD

Inventor： Roger Eklund ,  Paolo Pavanello ,  Gianluca Bustreo

IPC: H01F27/245 ,  H01F41/02

CPC classification number: H01F27/245 ,  H01F41/0233

Abstract: A core arrangement for a transformer is disclosed. The core arrangement comprises a plurality of core sheets. The core sheets have a thickness in the interval of 0.18-0.3 mm. The core sheets are attached to each other by means of an adhesive substance to make the core arrangement self-supporting.

公开(公告)号：US11862375B2

公开(公告)日：2024-01-02

申请号：US18021353

申请日：2021-09-29

Applicant: HITACHI ENERGY LTD

Inventor： Gianluca Bustreo ,  Paolo Pavanello ,  Marco Cocchio

IPC: H01F27/06 ,  H01F38/28 ,  H01B17/26

CPC classification number: H01F27/06 ,  H01B17/26 ,  H01F38/28

Abstract: A support for mounting an accessory equipment assembly with one or more accessory equipment units, such as current transformer units, to a base of a bushing includes a conductor surrounded by an insulator part such that each of the accessory equipment units is positioned in a defined way regarding the conductor, wherein said support includes aligning means for aligning each individual accessory equipment unit separately with respect to the conductor. A corresponding accessory equipment module includes an accessory equipment assembly with one or more accessory equipment units, such as current transformer units, and a support for mounting the accessory equipment assembly as well as a bushing unit including a bushing and said kind of accessory equipment module.