公开(公告)号：US09899172B2

公开(公告)日：2018-02-20

申请号：US14390469

申请日：2013-03-27

Applicant: Hitachi, Ltd.

Inventor： Hajime Urai ,  Yasuaki Aoyama ,  Hiroaki Hashimoto ,  Katsuhiko Shiraishi ,  Tatsuro Kato ,  Ayumu Morita ,  Toshiaki Rokunohe ,  Yoichi Oshita

IPC: H01H47/22 ,  H01H33/38 ,  H01H33/36 ,  H01H33/59 ,  H01H50/14 ,  H01H50/54 ,  H01H3/26

CPC classification number: H01H47/223 ,  H01H33/36 ,  H01H33/38 ,  H01H33/59 ,  H01H50/14 ,  H01H50/54 ,  H01H2003/268 ,  H01H2223/002

Abstract: The invention is intended to provide a circuit breaker or a circuit breaker operating method enabling a current interruption action to be performed efficiently. A circuit breaker is characterized in that includes a fixed contact and a movable contact that comes in and goes out of contact with the fixed contact; a main circuit conductor that is electrically connected to the fixed contact and the movable contact; an operating mechanism including a mover configured by concatenating permanent magnets or magnetic materials alternately having opposite N and S magnetic polarities along the direction of motion axis of the movable contact and magnetic poles disposed to face the N and S magnetic polarities of the mover and wound with windings; a current detector that detects a current flowing through the main circuit conductor; and a control device that varies the amount of a current to be supplied to the windings of the magnetic poles, depending on a current value detected by the current detector.

公开(公告)号：US09620315B2

公开(公告)日：2017-04-11

申请号：US14912794

申请日：2014-05-26

Applicant: Hitachi, Ltd.

Inventor： Masanao Terada ,  Hajime Urai ,  Katsuhiko Shiraishi ,  Yoichi Oshita ,  Hiroaki Hashimoto ,  Noriyuki Yaginuma

IPC: H01H33/42

CPC classification number: H01H33/42 ,  H01H2033/028 ,  H01H2205/002

Abstract: Provided is a gas circuit breaker that can reduce control energy smaller than that in previous double motion systems and an excessive force applied to a moveable pin to achieve a highly reliable double motion system. A gas circuit breaker has a double motion mechanism unit including a driving-side connecting rod, a driven-side connecting rod, a lever to connect the rods, and a guide to define the motion of the driving-side and driven-side connecting rods. A moveable pin extends through a first grooved cam of the driving-side conencting rod, a second grooved cam of the guide, and a third grooved cam of the lever. The driving-side connecting rod operates to move the moveable pin inside the grooved cams. Thus, the lever is rotated, the driven-side connecting rod is driven opposite to the driving-side connecting rod, and the driven-side arcing contact is driven opposite to the driving-side arcing contact.

公开(公告)号：US20150091677A1

公开(公告)日：2015-04-02

申请号：US14390594

申请日：2013-03-27

Applicant: Hitachi, Ltd.

Inventor： Hajime Urai ,  Yasuaki Aoyama ,  Hiroaki Hashimoto ,  Katsuhiko Shiraishi ,  Tatsuro Kato ,  Ayumu Morita ,  Toshiaki Rokunohe ,  Yoichi Oshita

IPC: H01H71/32 ,  H01H71/12 ,  H01H71/02

CPC classification number: H01H71/321 ,  H01H33/36 ,  H01H33/40 ,  H01H71/025 ,  H01H71/128 ,  H01H2003/268 ,  H02K16/00 ,  H02K41/031

Abstract: An object is to provide a gas circuit breaker having improved reliability. To solve the above-described problem, a gas circuit breaker is characterized by having a fixed contact, a movable contact configured to come into contact with or separate from the fixed contact, an insulating enclosure internally having the fixed contact and the movable contact, the inside of the insulating enclosure being filled with an insulating gas, and an operating mechanism configured to allow drive force for movement of the movable contact to be generated, wherein the operating mechanism includes a mover including permanent magnets or magnetic bodies disposed in a direction along which the operating mechanism allows the drive force to be generated, and a magnetic pole disposed to be opposed to the mover, and having a winding.

Abstract translation: 目的是提供一种具有改进的可靠性的气体断路器。 为了解决上述问题，气体断路器的特征在于具有固定触点，构造成与固定触点接触或分离的可动触头，内部具有固定触点和可动触点的绝缘外壳， 绝缘壳体的内部填充有绝缘气体;以及操作机构，其构造成允许用于所要生成的可动触头的移动的驱动力，其中，所述操作机构包括动子，所述动子包括永磁体或磁体， 所述操作机构允许产生驱动力，以及设置成与所述动子对置并具有绕组的磁极。

公开(公告)号：US09959999B2

公开(公告)日：2018-05-01

申请号：US15176869

申请日：2016-06-08

Applicant: Hitachi, Ltd.

Inventor： Koichiro Adachi ,  Hajime Urai ,  Katsuhiko Shiraishi ,  Masataka Sasaki

IPC: H01H33/59 ,  H01H33/36 ,  H01H11/00 ,  H01H3/26

CPC classification number: H01H33/593 ,  H01H11/0062 ,  H01H33/36 ,  H01H2003/268

Abstract: A method for controlling a power switching apparatus to solve problems including: setting a target time reaching a predetermined position immediately before a target phase by a time calculator during an opening and closing operation of a movable arc contact with respect to a fixed arc contact in a target phase at a predetermined average switching speed; and controlling an electric motor at a speed equal to or less than an average switching speed immediately before the target phase from an operation start time to the target time by a motor controller.

公开(公告)号：US09754742B2

公开(公告)日：2017-09-05

申请号：US15242944

申请日：2016-08-22

Applicant: Hitachi, Ltd.

Inventor： Masanao Terada ,  Katsuhiko Shiraishi ,  Yoichi Oshita

IPC: H01H33/42 ,  H01H33/91

CPC classification number: H01H33/42 ,  H01H33/91 ,  H01H2033/028 ,  H01H2221/088

Abstract: A gas circuit breaker includes a driving side electrode having a driving side main contact and a driving side arc contact, and a driven side electrode having a driven side main contact and a driven side arc contact in a sealed tank. The driving side electrode is connected to an operation device. The driven side electrode is coupled to a bidirectional driving mechanism unit. A sliding guide, on which the driven side main contact slides, is provided on an inner periphery side of the driven side main contact. The driven side main contact is energized by a coil spring in a direction of the sliding guide and has two contact surfaces. Only during normal conduction, one of the contact surfaces contacts a projected portion of the sliding guide and the other of the contact surfaces contacts the driving side main contact.

公开(公告)号：US10199188B2

公开(公告)日：2019-02-05

申请号：US15547908

申请日：2016-01-12

Applicant: HITACHI, LTD.

Inventor： Masanao Terada ,  Yuki Nakai ,  Yoichi Oshita ,  Hiroaki Hashimoto ,  Hajime Urai ,  Katsuhiko Shiraishi

IPC: H01H33/42 ,  H01H33/02 ,  H01H3/42 ,  H01H3/46

Abstract: A bidirectional driving mechanism 10 has a drive-side linkage rod 11, a driven-side linkage rod 13, two levers 12 that link the drive-side linkage rod with the driven-side linkage rod, and a guide 14 that regulates the operation of the drive-side linkage rod 11 and the driven-side linkage rod 13. A moveable pin 18 is passed through a first groove cam 16 of the drive-side linkage rod 11, a second groove cam 17 of the guide 14, and third groove cams 19 of the levers 12, and by operation of the drive-side rod 13, the moveable pin 18 moves within the respective groove cams 16, 17, 19, causing the levers 12 to rotate, the driven-side linkage rod 13 to be driven in a direction opposite to the drive-side linkage rod 11, and a driven-side arc electrode 5 to be driven in a direction opposite to a drive-side arc electrode 4.

公开(公告)号：US20150043121A1

公开(公告)日：2015-02-12

申请号：US14390469

申请日：2013-03-27

Applicant: Hitachi, Ltd.

Inventor： Hajime Urai ,  Yasuaki Aoyama ,  Hiroaki Hashimoto ,  Katsuhiko Shiraishi ,  Tatsuro Kato ,  Ayumu Morita ,  Toshiaki Rokunohe ,  Yoichi Ohita

IPC: H01H47/22 ,  H01H50/54 ,  H01H50/14

CPC classification number: H01H47/223 ,  H01H33/36 ,  H01H33/38 ,  H01H33/59 ,  H01H50/14 ,  H01H50/54 ,  H01H2003/268 ,  H01H2223/002

Abstract: The invention is intended to provide a circuit breaker or a circuit breaker operating method enabling a current interruption action to be performed efficiently. A circuit breaker is characterized in that includes a fixed contact and a movable contact that comes in and goes out of contact with the fixed contact; a main circuit conductor that is electrically connected to the fixed contact and the movable contact; an operating mechanism including a mover configured by concatenating permanent magnets or magnetic materials alternately having opposite N and S magnetic polarities along the direction of motion axis of the movable contact and magnetic poles disposed to face the N and S magnetic polarities of the mover and wound with windings; a current detector that detects a current flowing through the main circuit conductor; and a control device that varies the amount of a current to be supplied to the windings of the magnetic poles, depending on a current value detected by the current detector.

Abstract translation: 本发明旨在提供一种能够有效地执行电流中断动作的断路器或断路器操作方法。 断路器的特征在于包括固定触点和与固定触头脱离接触的可动触头; 主电路导体，电连接到固定触点和可动触头; 一种操作机构，包括通过将永磁体或磁性材料沿着可移动触点的运动轴线的方向交替具有相反的N和S磁极性而构成的移动体，以及面对移动体的N和S磁极性并且缠绕的磁极 绕组; 检测流过主电路导体的电流的电流检测器; 以及控制装置，其根据由电流检测器检测到的电流值来改变要提供给磁极绕组的电流量。