公开(公告)号：US20210027964A1

公开(公告)日：2021-01-28

申请号：US17040955

申请日：2019-02-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takehiko YAMAKAWA ,  Kazuyuki SAKIYAMA ,  Akira KATO

IPC: H01H50/54 ,  H01H47/22 ,  H01H50/44 ,  H01H50/18 ,  H01H50/36

Abstract: An electromagnetic relay includes a fixed contact, a moving contact, an electromagnet device, and a second coil. The moving contact moves from a closed position where the moving contact is in contact with the fixed contact to an open position where the moving contact is out of contact with the fixed contact, and vice versa. The electromagnet device includes a first coil and a mover. The mover is actuated on receiving a magnetic flux generated when a current flows through the first coil to move the moving contact from one of the closed position or the open position to the other position. The second coil gives, when a current flows through the second coil, at least a magnetic flux, of which a direction is opposite from a direction of the magnetic flux generated by the first coil, to the mover.

公开(公告)号：US20220166329A1

公开(公告)日：2022-05-26

申请号：US17441184

申请日：2020-02-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira KATO ,  Motohiko FUJIMURA ,  Kazuyuki SAKIYAMA ,  Takehiko YAMAKAWA ,  Taiki NISHIMOTO

IPC: H02M3/335 ,  H02M1/00

Abstract: A power conversion device is equipped with at least one leg circuit containing two switching elements connected in series, respectively, a transformer having a primary winding and a secondary winding, a capacitor connected between the leg circuit and one end of the primary winding, a switch circuit, and a rectifier circuit. The switch circuit selectively connects one of a plurality of winding sections of the secondary winding that are different from each other to the rectifier circuit

公开(公告)号：US20240071678A1

公开(公告)日：2024-02-29

申请号：US18268126

申请日：2021-12-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira KATO ,  Takehiko YAMAKAWA

IPC: H01F27/26 ,  H01F27/08 ,  H02J50/10

CPC classification number: H01F27/263 ,  H01F27/08 ,  H02J50/10

Abstract: A transformer device according to the disclosure includes a transformer and a cooling device that cools the transformer. The transformer includes a primary coil, a secondary coil, and a first core and a second core, into which the primary and secondary coils are respectively inserted. The first and second cores are disposed to face each other. The first core includes a first core part and a second core part, each of the first and second core parts formed by dividing the first core in a predetermined division plane. The first and second core parts of the first core are disposed to face each other through a gap, and in which the first core and the cooling device are disposed to face each other.

公开(公告)号：US20210217571A1

公开(公告)日：2021-07-15

申请号：US17040966

申请日：2019-02-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Akira KATO ,  Kazuyuki SAKIYAMA ,  Takehiko YAMAKAWA ,  Motohiko FUJIMURA

IPC: H01H50/42 ,  H01H50/20 ,  H01H50/54

Abstract: An electromagnet device moves two moving contacts from one of a closed position or an open position to the other position when an electric current flows through a coil. A regenerative current coming from the coil flows through a regeneration unit when the coil makes a transition from an energized state where the coil is supplied with an electric current from a power supply to a non-energized state where the coil is supplied with no electric current from the power supply. The control unit causes the regenerative current to flow through a load by controlling a switch when the coil makes the transition from the energized state to the non-energized state.