公开(公告)号：US11476033B2

公开(公告)日：2022-10-18

申请号：US16811352

申请日：2020-03-06

Applicant: Fanuc Corporation

Inventor： Tomokazu Yoshida ,  Masatomo Shirouzu ,  Kenichi Tsukada

IPC: H01F27/26

Abstract: A reactor includes a core body, and the core body includes an outer peripheral iron core, at least three iron cores in contact with an inner surface of the outer peripheral iron core, or positioned to be coupled to the inner surface, and coils wound around the iron cores. A gap through which magnetic coupling is possible is formed between one iron core of the at least three iron cores and another iron core adjacent to the one iron core. The reactor includes an end plate attached to one end face of the core body, and the end plate includes a protruding portion that partially protrudes in a direction away from an outer circumferential surface of the core body.

公开(公告)号：US20210098170A1

公开(公告)日：2021-04-01

申请号：US16923538

申请日：2020-07-08

Applicant: Fanuc Corporation

Inventor： Tomokazu Yoshida

IPC: H01F27/02 ,  H01F27/24 ,  H01F27/28

Abstract: A reactor includes an outer peripheral iron core, at least three iron cores, and a coil wound around the iron core. The reactor further includes an energizing portion connected to the coil and configured to be connected to a cable, and a cover provided to cover the energizing portion. At least one cutout formed in the cover is provided with at least one adjustment member configured to adjust an area of the cutout at least partially in the cover. The adjustment member is configured to be cut away from the cutout or to be bent with respect to a surface where the cutout is formed.

公开(公告)号：US10910832B2

公开(公告)日：2021-02-02

申请号：US15934196

申请日：2018-03-23

Applicant: FANUC CORPORATION

Inventor： Tomokazu Yoshida

IPC: H02H11/00 ,  H02H7/125 ,  H02P29/024 ,  H02P29/032 ,  H02H7/12 ,  H02P27/06

Abstract: A converter apparatus includes: an AC/DC converter; a DC link capacitor connected to the converter; a voltage detection unit detecting the DC link voltage; a switching unit connecting or disconnecting between a power supply and the converter; a switching operation unit detecting an abnormality in a motor drive device including the converter apparatus and an inverter, and control the switching unit; a power supply monitoring unit detecting a voltage inputted to the converter to monitor a connection state between the power supply and the converter; a threshold value setting unit setting a threshold value to determine the presence or absence of a short circuit failure; and a short circuit failure detection unit determining that a short circuit failure has occurred, when the voltage of the DC link capacitor, immediately after the power supply is disconnected from the converter, is equal to or less than the threshold value.

公开(公告)号：US20210005375A1

公开(公告)日：2021-01-07

申请号：US16908889

申请日：2020-06-23

Applicant: Fanuc Corporation

Inventor： Tomokazu Yoshida

IPC: H01F27/24 ,  H01F27/28 ,  H01F41/02

Abstract: A core main body includes an outer peripheral iron core, and at least three iron cores. Between the two iron cores adjacent to each other, a gap being magnetically couplable is formed. The outer peripheral iron core includes a first outer peripheral iron core block and a second outer peripheral iron core block that are formed by stacking a plurality of magnetic plates, and an intermediate plate disposed therebetween. The intermediate plate includes an outer peripheral iron core corresponding portion corresponding to the outer peripheral iron core, a plurality of protruding sections protruding from an outer peripheral surface of the outer peripheral iron core, and engaging sections provided on the plurality of protruding sections.

公开(公告)号：US10650960B2

公开(公告)日：2020-05-12

申请号：US16038200

申请日：2018-07-18

Applicant: FANUC CORPORATION

Inventor： Tomokazu Yoshida ,  Masatomo Shirouzu ,  Kenichi Tsukada

IPC: H01F27/33 ,  H01F27/28 ,  H01F27/245 ,  H01F3/14 ,  H01F37/00

Abstract: A reactor includes a core body having at least three iron cores composed of a plurality of stacked magnetic plates and an end plate and a pedestal which are connected to the core body so as to interpose the core body therebetween. Gaps are formed between the at least three iron cores, through which magnetic connection can be established. An unevenness absorbing member is arranged at least one of a region between an end plate and the core body and a region between the core body and a pedestal, for absorbing unevenness in heights of the at least three iron cores in the axial direction of the core body.

公开(公告)号：US10600551B2

公开(公告)日：2020-03-24

申请号：US15989358

申请日：2018-05-25

Applicant: FANUC CORPORATION

Inventor： Tomokazu Yoshida ,  Masatomo Shirouzu ,  Kenichi Tsukada

IPC: H01F27/24 ,  H01F27/26 ,  H01F27/28 ,  H01F27/30 ,  H01F37/00 ,  H01F3/14

Abstract: A core body of a reactor includes an outer peripheral iron core composed of a plurality of outer peripheral iron core portions, at least three iron cores coupled to inner surfaces of the plurality of outer peripheral iron core portions, and coils. Gaps, which can be magnetically coupled, are formed between one iron core and another iron core adjacent thereto. The reactor further includes a fixture which extends through the interior of the core body in a region between the outer peripheral iron core and the gaps to fasten opposite ends of the at least three iron cores to each other.

公开(公告)号：US20190035542A1

公开(公告)日：2019-01-31

申请号：US16044768

申请日：2018-07-25

Applicant: FANUC CORPORATION

Inventor： Tomokazu Yoshida ,  Masatomo Shirouzu ,  Kenichi Tsukada

IPC: H01F27/36 ,  H01F27/26 ,  H01F27/29 ,  H01F3/14

Abstract: A reactor includes a core body including an outer peripheral iron core, at least three iron cores contacting to an internal surface of the outer peripheral iron core, and coils wound on the iron cores. A gap is formed between one and another of the iron cores adjacent each other, so as to be magnetically connectable therethrough. The reactor has a terminal base connected to cables through current carrying portions, as well as connected to the coils, and an electrical shock prevention cover for covering the terminal base. The electrical shock prevention cover has openings for passing the cables connected to the terminals therethrough. The terminal base has a plate that blocks at least a part of each opening to prevent a finger from touching the current carrying portion while the cables are connected to the terminals and which is detachable in accordance with the thickness of the cables.

公开(公告)号：US20190027299A1

公开(公告)日：2019-01-24

申请号：US16031050

申请日：2018-07-10

Applicant: FANUC CORPORATION

Inventor： Tomokazu Yoshida ,  Masatomo Shirouzu ,  Kenichi Tsukada

IPC: H01F27/29 ,  H01F27/24 ,  H01F27/34

CPC classification number: H01F27/29 ,  H01F27/04 ,  H01F27/24 ,  H01F27/245 ,  H01F27/2828 ,  H01F27/343 ,  H01F30/12 ,  H01F37/00

Abstract: A reactor includes a terminal block having a plurality of terminals which is coupled to one end of a core body. A plurality of surge protection elements are connected to the plurality of terminals inside the terminal block. Input side extension portions and output side extension portions extending from coils are connected to the plurality of terminals of the terminal block, and a plurality of surge protection elements are connected to the input side extension portions and the output side extension portions, respectively.

公开(公告)号：US20190019614A1

公开(公告)日：2019-01-17

申请号：US16031063

申请日：2018-07-10

Applicant: FANUC CORPORATION

Inventor： Tomokazu Yoshida ,  Masatomo Shirouzu ,  Kenichi Tsukada

IPC: H01F27/24 ,  H01F27/28 ,  H01F27/29 ,  H01F27/40 ,  H01F41/02 ,  H01F41/04

CPC classification number: H01F27/24 ,  H01F3/14 ,  H01F27/28 ,  H01F27/29 ,  H01F27/402 ,  H01F37/00 ,  H01F41/0206 ,  H01F41/04 ,  H01F2027/406

Abstract: A reactor according to an embodiment of the present disclosure includes a core body that includes an outer peripheral iron core composed of a plurality of outer peripheral iron core portions, at least three iron cores coupled to the outer peripheral iron core portions, and coils wound on the iron cores. A gap is formed between one of the iron cores and another of the iron cores adjacent to the one of the iron cores, so as to be magnetically connectable through the gap. The reactor includes a terminal base unit for electrically connecting the coils to an external device, and a temperature sensor attached to a surface of the terminal base unit, the surface being opposite the coils.

公开(公告)号：US20180350504A1

公开(公告)日：2018-12-06

申请号：US15989358

申请日：2018-05-25

Applicant: FANUC CORPORATION

Inventor： Tomokazu Yoshida ,  Masatomo Shirouzu ,  Kenichi Tsukada

IPC: H01F27/26 ,  H01F27/28

CPC classification number: H01F27/26 ,  H01F3/14 ,  H01F27/263 ,  H01F27/28 ,  H01F27/306 ,  H01F37/00

Abstract: A core body of a reactor includes an outer peripheral iron core composed of a plurality of outer peripheral iron core portions, at least three iron cores coupled to inner surfaces of the plurality of outer peripheral iron core portions, and coils. Gaps, which can be magnetically coupled, are formed between one iron core and another iron core adjacent thereto. The reactor further includes a fixture which extends through the interior of the core body in a region between the outer peripheral iron core and the gaps to fasten opposite ends of the at least three iron cores to each other.