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公开(公告)号：US12038486B2
公开(公告)日：2024-07-16
申请号：US17602901
申请日：2020-04-07
发明人： Chengde Xu , Chun-Suk Yang
CPC分类号： G01R31/52 , G01R1/203 , G01R31/42 , H02H7/1227
摘要： The present disclosure relates to an inverter system capable of detecting an output ground fault and an output ground fault detection method using same and, particularly, to an inverter for detecting an output ground fault by detecting the current of a leg-shunt resistor, and an inverter output ground detection fault method using same. The present disclosure compares absolute peak values of 3-phase current AD raw values detected from a shunt resistor, and thus may reliably detect the output ground fault of an inverter.
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公开(公告)号：US20240234056A9
公开(公告)日：2024-07-11
申请号：US18278773
申请日：2022-01-17
发明人： Sangwook CHA
CPC分类号： H01H33/121 , H01H9/34 , H01H33/08 , H01H33/42
摘要： The present invention provides an arc chute, which can be provided to make close contact with a curved frame part, and a load switch comprising same, the arc chute comprising: two cover parts, which are arranged to be adjacent to the outer circumference of a frame part, are spaced apart from each other, and overlap each other in the axial direction of the frame part; and an arc grid which is arranged between the two cover parts so as to be coupled to each of the two cover parts, wherein the cover part is formed in a shape in which one side coming into contact with the outer circumference of the frame part corresponds to the outer circumference of the frame part.
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公开(公告)号：US20240212953A1
公开(公告)日：2024-06-27
申请号：US18286331
申请日：2022-04-22
发明人： Han Baek CHUNG
IPC分类号： H01H33/10
CPC分类号： H01H33/10
摘要： The present disclosure relates to a circuit breaking unit and an air circuit breaker including the same, and provides a circuit breaking unit, including: a fixed contact; a movable contact moved in a direction toward or away from the fixed contact; a fixed contact terminal having the fixed contact disposed at a lower end thereof and extending upward; a low runner disposed extending upward from the fixed contact, one end thereof coupled to the fixed contact terminal, and the other end thereof spaced apart from the fixed contact terminal; and a magnet unit disposed between the low runner and the fixed contact terminal and forming a magnetic field between the fixed contact and the movable contact to guide a path of an arc generated when the fixed contact and the movable contact are separated, to the outside.
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公开(公告)号：US12021445B2
公开(公告)日：2024-06-25
申请号：US17629675
申请日：2020-03-12
发明人： Sun Ho Bae , Jae Ho Lee
CPC分类号： H02M1/32 , H02M1/0009 , H02M1/08 , H02M5/458
摘要： Disclosed are an overcurrent protection device and a power conversion device using same. A power conversion device according to an embodiment of the present disclosure comprises: a control unit for providing a collector-emitter voltage to a switching element by means of a first output node; and an overcurrent protection circuit connected in a line between the first output node and the switching element and for limiting the overcurrent of the switching element.
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公开(公告)号：US11997802B2
公开(公告)日：2024-05-28
申请号：US17431770
申请日：2019-09-11
发明人： Young-Hoon Song
CPC分类号： H05K5/0026 , H05K1/14 , H05K7/1427
摘要： The present disclosure relates to an inverter module which can be coupled to another inverter module, the inverter module comprising: a main PCB having a main substrate on which a plurality of circuits are printed; a plurality of sub-PCBs coupled to the main PCB and each having one end exposed through the main PCB; and a case for receiving the main PCB and the sub-PCBs, wherein when the inverter module is coupled to another inverter module, the ends of the sub-PCBs exposed to the outside of the case are coupled to the another adjacent inverter module. According to the present disclosure, a plurality of inverter modules can be connected and used as one inverter system, and thus an inverter system having a required capacity can be easily implemented.
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公开(公告)号：US11977103B2
公开(公告)日：2024-05-07
申请号：US17602601
申请日：2020-03-25
发明人： Sunghee Kang
IPC分类号： G01R19/32 , G01R19/165 , G01R31/26 , G01R31/327
CPC分类号： G01R19/32 , G01R19/16571 , G01R31/2628 , G01R31/3275
摘要： The present disclosure relates to a monitoring system for a plurality of power devices serially connected in a main circuit of a current transmission path comprising a first power device and a second power device each including a semiconductor element; a first sensor connected to the first and second power devices, and which senses information related to a first current flowing in the first power device; a second sensor for sensing information related to a second current flowing in the second power device; a third sensor for sensing information related to a third current flowing between the first power device and the second power device; and a control unit for comparing the first current and the second current on the basis of the third current measured by the third sensor, and determining whether the state of each power device is abnormal based on a difference with the third current.
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公开(公告)号：US20240136130A1
公开(公告)日：2024-04-25
申请号：US18278773
申请日：2022-01-17
发明人： Sangwook CHA
CPC分类号： H01H33/121 , H01H9/34 , H01H33/08 , H01H33/42
摘要： The present invention provides an arc chute, which can be provided to make close contact with a curved frame part, and a load switch comprising same, the arc chute comprising: two cover parts, which are arranged to be adjacent to the outer circumference of a frame part, are spaced apart from each other, and overlap each other in the axial direction of the frame part; and an arc grid which is arranged between the two cover parts so as to be coupled to each of the two cover parts, wherein the cover part is formed in a shape in which one side coming into contact with the outer circumference of the frame part corresponds to the outer circumference of the frame part.
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公开(公告)号：USD1022927S1
公开(公告)日：2024-04-16
申请号：US29843792
申请日：2022-06-23
设计人： Euihyun Cho
摘要： FIG. 1 is a top, front, right-side perspective view of a remote terminal unit for switchboard showing the new design:
FIG. 2 is a top, rear, left-side perspective view thereof;
FIG. 3 is a front elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a left-side elevation view thereof;
FIG. 6 is a right-side elevation view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.-
公开(公告)号：US20240087830A1
公开(公告)日：2024-03-14
申请号：US17767787
申请日：2020-04-09
发明人： Kyeonghun JANG , Deokyong YUN , Minseok KIM
摘要： An electromagnetic contactor is disclosed. An electromagnetic contactor according to an embodiment of the present disclosure includes an arc extinguishing unit. The air extinguishing unit is configured to surround a position where a fixed contactor and a movable contactor are in contact with each other. Accordingly, an arc generated between the fixed contactor and the movable contactor can extend toward a grid without arbitrarily flowing in an inner space of the electromagnetic contactor. Further included is an arc box unit according to an embodiment of the present disclosure. An arc outlet is formed passing through the arc box unit. An arc that is extinguished while passing through the grid can be discharged to the outside of the electromagnetic contactor through the arc outlet. Accordingly, the arc can be extinguished and discharged quickly and effectively. As a result, components of the electromagnetic contactor are not damaged by the generated arc.
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公开(公告)号：US20240079860A1
公开(公告)日：2024-03-07
申请号：US18272145
申请日：2021-11-25
发明人： Han-Joo LEE , Hong-Ik YANG
IPC分类号： H02B11/173 , H01H71/52
CPC分类号： H02B11/173 , H01H71/522
摘要： One embodiment of a bogie apparatus may comprise: a horizontal frame; vertical frames respectively coupled to both ends of the horizontal frame and provided in a pair; an end bar having both end parts respectively coupled to one end of the pair of horizontal frames; and a connector assembly coupled to the end bar so as to move in at least one direction among upward, downward, left, and right directions. The connector assembly may comprise: a socket portion having a plurality of wiring terminals; a socket mounting portion having the socket portion mounted thereon, and provided in a plate shape; and a guide bushing formed so as to protrude from the socket mounting portion and away from the socket portion, and having a hollow.
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