公开(公告)号：US11784018B2

公开(公告)日：2023-10-10

申请号：US17639090

申请日：2020-04-07

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jinhee Park ,  Jungwoo Yoo

IPC: H01H50/38 ,  H01H50/54 ,  H01H51/01

CPC classification number: H01H50/38 ,  H01H50/54 ,  H01H51/01

Abstract: Shown are an arc path formation unit and a direct current relay including same. The arc path formation unit according to an embodiment of the present disclosure includes a plurality of magnet parts. The magnet parts form a magnetic field at the point at which each fixed contact is positioned. Each magnet part positioned adjacent to each fixed contact is formed so that opposite surfaces thereof facing each other have different polarities. An electric current flowing through the fixed contact and a movable contact, and the magnetic field generated by each magnet part form an electromagnetic force. The electromagnetic force moves away from the center of the direct current relay. Therefore, the generated arc moves in the direction of the electromagnetic force so as to move away from the center of the direct current relay. Thus, damage to the direct current relay can be prevented.

公开(公告)号：US20230317383A1

公开(公告)日：2023-10-05

申请号：US17912777

申请日：2021-03-03

Applicant: LS ELECTRIC CO., LTD.

Inventor： Han Baek CHUNG

IPC: H01H9/44 ,  H01H9/34

CPC classification number: H01H9/443 ,  H01H9/342 ,  H01H73/18

Abstract: The present disclosure relates to an arc extinguishing assembly, including side members which are spaced apart by a certain distance and disposed to face each other; an exhaust which is installed on an upper part of the side member; a plurality of grids which are installed between the side members and having both ends fixed to each of the side members; an arc guide having one end coupled to the side member and installed under the plurality of grids; and a magnet which is installed such that both ends are respectively coupled to the side members under the plurality of grids, and forms an electromagnetic force in a direction toward the grid, and a circuit breaker including the same.

公开(公告)号：US20230261562A1

公开(公告)日：2023-08-17

申请号：US18014298

申请日：2021-06-30

Applicant: LS ELECTRIC CO., LTD.

Inventor： Sun Jae YOON ,  Ki Woo PARK ,  Jung Won SEO

IPC: H02M1/32 ,  H02M7/5395 ,  H02M1/36 ,  H03K17/284 ,  H02M1/08 ,  H03K17/0812

CPC classification number: H02M1/32 ,  H02M7/5395 ,  H02M1/36 ,  H03K17/284 ,  H02M1/08 ,  H03K17/08122

Abstract: The present disclosure relates to a power conversion device and a control method thereof and, more specifically, to a power conversion device which may protect a switching element when performing stopping of driving, and a control method thereof. A power conversion device according to an embodiment of the present disclosure comprises a pulse width modulation (PWM) controller for outputting, to a gate driver, a first pulse width modulation signal for controlling a first switching element, a second pulse width modulation signal for controlling a second switching element, a third pulse width modulation signal for controlling a third switching element, and a fourth pulse width modulation signal for controlling a fourth switching element.

公开(公告)号：US11716221B2

公开(公告)日：2023-08-01

申请号：US17432792

申请日：2019-07-10

Applicant: LS ELECTRIC CO., LTD.

Inventor： Sung Sik Ham

IPC: H04L12/46 ,  H04L45/48 ,  H04L45/00 ,  H04L65/40

CPC classification number: H04L12/4604 ,  H04L45/48 ,  H04L45/66 ,  H04L65/40

Abstract: The present disclosure relates to a system for managing a switchboard using a ring network, including a plurality of switchboards for forming at least one group, a switch for forming a ring network with the plurality of switchboards to receive operation information related to an operation of a device provided in each switchboard from at least one switchboard among the plurality of switchboards, and a monitoring server for receiving the operation information, and it can be applied to other exemplary embodiments.

公开(公告)号：US20230216291A1

公开(公告)日：2023-07-06

申请号：US17928537

申请日：2021-03-30

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jungwook SIM ,  Jaeho LEE ,  Woonghyeob SONG ,  Sunghee KANG

IPC: H02H7/20 ,  H02M1/34 ,  H03K17/567 ,  H02H3/027 ,  H02H3/05

CPC classification number: H02H7/20 ,  H02M1/34 ,  H03K17/567 ,  H02H3/027 ,  H02H3/05

Abstract: The present disclosure relates to a solid insulated switch using a semiconductor comprising a main circuit unit connected between systems on both sides thereof, and which has a first semiconductor and a second semiconductor arranged in a series; a snubber circuit having a capacitor and a resistor arranged in a series, one end connected in parallel to the front end of the first semiconductor switch, and the other end connected in parallel to the rear end of the second semiconductor switch; a freewheeling circuit, having a diode and a resistor arranged in a series, one end connected to a common contact between the first semiconductor switch and the second semiconductor switch, and the other end connected to the ground; and a mechanical switch for ensuring physical insulation after fault current interruption.

公开(公告)号：US20230216280A1

公开(公告)日：2023-07-06

申请号：US18019016

申请日：2021-03-08

Applicant: LS ELECTRIC CO., LTD.

Inventor： Byoungchul KIM

IPC: H02B1/04 ,  H02B1/20 ,  H01B17/58

CPC classification number: H02B1/04 ,  H02B1/20 ,  H01B17/583

Abstract: The present disclosure has been conceived to solve the above-mentioned problem, and the objective of the present disclosure is to provide a switchboard capable of easily correcting a difference between a phase-to-phase distance of a breaker terminal and a phase-to-phase distance of a bus bar. A switchboard according to one embodiment of the present disclosure comprises: a first compartment into which a circuit breaker is introduced; a second compartment adjacent to the first compartment and provided with a bus bar; and an insulating bushing installed on a barrier contacting the first compartment and the second compartment, wherein the insulating bushing is provided with a connecting conductor, wherein the connecting conductor has one side connected to a breaker terminal of the circuit breaker, and the other side connected to the bus bar.

公开(公告)号：US11689194B2

公开(公告)日：2023-06-27

申请号：US17026909

申请日：2020-09-21

Applicant: LS ELECTRIC CO., LTD.

Inventor： Young-Joo Lee

IPC: H03K17/081 ,  H03K17/082 ,  H03K17/687 ,  H02H9/02 ,  H02H3/087 ,  H01H47/00 ,  H02H1/06

CPC classification number: H03K17/081 ,  H01H47/00 ,  H02H1/06 ,  H02H3/087 ,  H02H9/025 ,  H02H9/026 ,  H03K17/0822 ,  H03K17/6874 ,  H03K2017/6875

Abstract: The present disclosure relates to a power supply device for a protective relay. The power supply device comprises a power circuit for supplying a power to the control circuit, wherein the power circuit includes: a semiconductor switch element having an input terminal connected to a first node for receiving a direct current, and an output terminal connected to a reference node, wherein the reference node has a voltage lower than a voltage of the first node; and a first voltage drop element disposed between the first node and a second node, wherein the second node is connected to a switching terminal of the semiconductor switch element.

公开(公告)号：US20230171316A1

公开(公告)日：2023-06-01

申请号：US17925191

申请日：2021-04-28

Applicant: LS ELECTRIC CO., LTD.

Inventor： Hoyoung KANG

IPC: H04L67/12 ,  G06Q50/06 ,  H04L69/00

CPC classification number: H04L67/12 ,  G06Q50/06 ,  H04L69/26

Abstract: The present specification relates to a data collection apparatus of a power system, the data collection apparatus comprising: a communication unit that communicates with a plurality of sites using different communication protocols to receive, from the plurality of sites, data about energy use information; a storage unit that stores a plurality of data models respectively corresponding to the communication protocols to store the data in each of the plurality of data models; and a processing unit that generates a basic data model by performing data modeling according to any one of the communication protocols, generates one or more extended data models by performing data modeling according to the rest of the communication protocols, includes the extended data models in the basic data model, and stores the included extended data models in the storage unit.

公开(公告)号：US20230154696A1

公开(公告)日：2023-05-18

申请号：US17916705

申请日：2021-03-29

Applicant: LS ELECTRIC CO., LTD.

Inventor： Young KIM

IPC: H01H9/54 ,  H01H9/02

CPC classification number: H01H9/54 ,  H01H9/02

Abstract: The present disclosure relates to a power device for continuously detecting entrance and exit positions, the power device comprising: a cradle having a cradle terminal formed on the rear side; a circuit breaker mechanically and electrically connected to or disconnected from the cradle terminal; and a position detection means which is mounted inside the circuit breaker and detects the position of a body of the circuit breaker in real time.

公开(公告)号：US11637415B2

公开(公告)日：2023-04-25

申请号：US17874829

申请日：2022-07-27

Applicant: LS ELECTRIC CO., LTD.

Inventor： Jongdoo Kim ,  Jihoon Ma ,  Sangwon Nam ,  Jaekwon Koh

IPC: H02B1/56

Abstract: The present disclosure relates to an arc ventilation system of a distributing board, and more particularly, to an arc ventilation system of a distributing board to minimize an arc flowing forward to prevent damage. In the arc ventilation system of a distributing board in which a plurality of compartments are provided, a first compartment accommodating an electric power device which can be drawn in or out, among the plurality of compartments, comprises an arc blocking part blocking a space between the electric power device and the first compartment at an operation position of the electric power device.