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公开(公告)号：US20230223228A1
公开(公告)日：2023-07-13
申请号：US17923154
申请日：2021-03-29
Applicant: LS ELECTRIC CO., LTD.
Inventor： Woonghyeob SONG , Jungwook SIM
CPC classification number: H01H71/0207 , H02J50/10 , H01H9/54
Abstract: The present disclosure relates to a semiconductor circuit breaker and, more specifically, to a semiconductor circuit breaker having a detachable interface module. The semiconductor circuit breaker according to an embodiment of the present disclosure comprises: a circuit breaker body connected to a main circuit; and an interface module which is independent from the circuit breaker body, wherein the circuit breaker body comprises: a first reception part disposed on the outer surface of the circuit breaker body; and a blocking part including a power semiconductor device connected to the main circuit to block the main circuit when an overcurrent occurs, and the interface module comprises an operation part for controlling the blocking part, and is detachably coupled to the first reception part.
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公开(公告)号：US20220209765A1
公开(公告)日：2022-06-30
申请号：US17606945
申请日：2020-03-19
Applicant: LS ELECTRIC CO., LTD.
Inventor： Woonghyeob SONG , Jungwook SIM , Chaeyoon BAE
IPC: H03K17/081
Abstract: The present disclosure relates to a semiconductor circuit breaker and, more specifically, to a semiconductor circuit breaker in which a protection circuit is modularized and thus maintenance and repair can be easily done. A semiconductor circuit breaker according to an embodiment of the present disclosure comprises: a main circuit unit connected between a power source and a load and having a semiconductor switch; an outer box equipped with the main circuit unit and having a module accommodation unit outside thereof; and a protection module detachably accommodated in the module accommodation unit.
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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.
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公开(公告)号：US20250080110A1
公开(公告)日：2025-03-06
申请号：US18284815
申请日：2022-02-14
Applicant: LS ELECTRIC CO., LTD.
Inventor： Dongjin YUN , Jungwook SIM , Woonghyeob SONG , Sunghee KANG
IPC: H03K17/687
Abstract: The present disclosure comprises: a semiconductor switch unit including a first semiconductor switch having a drain terminal connected to a power grid, a second semiconductor switch having a drain terminal connected to a load, and first and second diodes each having a positive electrode and a negative electrode respectively connected to a source terminal and the drain terminal of each semiconductor switch; a bypass circuit which connects the drain terminal of the first semiconductor switch to the source terminal of the second semiconductor switch; and a control unit which, when the power grid is connected to the semiconductor circuit breaker, supplies a current to the load through the bypass circuit and the second diode by closing the bypass circuit while the first and second semiconductor switches are turned off, and which, when preset conditions are met, turns on the first and second semiconductor switches so as to open the bypass circuit so that a current is supplied to the load through the semiconductor switch unit.
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Patent Agency Ranking
公开(公告)号：US20240297000A1
公开(公告)日：2024-09-05
申请号：US18281245
申请日：2022-02-16
Applicant: LS ELECTRIC CO., LTD.
Inventor： Woonghyeob SONG , Jungwook SIM , Sunghee KANG , Dongjin YUN , Jaeho LEE
Abstract: The present disclosure relates to a semiconductor circuit breaker, and more particularly, to a semiconductor circuit breaker having excellent heat dissipation. The semiconductor circuit breaker according to one embodiment of the present invention comprises: a switching device provided in an upper space of an enclosure; an air gap switch (mechanical switch) provided in the upper space and disposed forward of the switching device; an electric circuit disposed on an upper portion of the switching device; a heatsink provided in a lower space of the enclosure and coupled to a lower portion of the switching device; and a cooling fan provided in the lower space and disposed in a front portion of the enclosure.
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公开(公告)号：US20210305980A1
公开(公告)日：2021-09-30
申请号：US17268307
申请日：2018-08-27
Inventor： Jungwook SIM , Suhyeong JANG , Sunghee KANG , Woonghyeob SONG , Seungki SUL , Donghoon PARK , Dongho SHIN
IPC: H03K17/687 , H02H3/087
Abstract: The present disclosure relates to a bidirectional semiconductor circuit breaker including a primary circuit unit connected between a power supply and a load and in which a first semiconductor switch and a second semiconductor switch are arranged in series and a snubber circuit unit of which one end is connected to the front end of the first semiconductor switch and the other end is connected to the rear end of the second semiconductor switch, in parallel. The snubber circuit unit includes a first circuit line, a second circuit line, and a third circuit line of which one end and the other end are connected to the first circuit line and the second circuit line, respectively, and in which a first resistor and a second resistor are arranged in series, and provide a snubber circuit which is applicable to a bidirectional fault current and satisfies semiconductor protection and current restraining performance.
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公开(公告)号：US20240178656A1
公开(公告)日：2024-05-30
申请号：US18284758
申请日：2022-02-14
Applicant: LS ELECTRIC CO., LTD.
Inventor： Jungwook SIM , Dongjin YUN , Sunghee KANG , Woonghyeob SONG
CPC classification number: H02H7/18 , H02J7/00304 , H02J7/0031 , H02J7/0047 , H02J7/00712
Abstract: The present disclosure comprises: a solid-state circuit breaker, which is arranged between a battery system and a line and includes a semiconductor switch for providing an electrical connection or insulation between the battery system and the line according to the voltage applied to a gate terminal; an interrupter switch for providing a physical connection or separation between the solid-state circuit breaker and the line; and a rack battery management system which controls a gate driver applying the gate voltage, so as to provide insulation between the battery system and the line according to the result of sensing a current flowing between the battery system and the line, and which controls the interrupter switch to physically separate the solid-state circuit breaker from the line.
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公开(公告)号：US20240120727A1
公开(公告)日：2024-04-11
申请号：US18285922
申请日：2022-04-01
Applicant: LS ELECTRIC CO., LTD.
Inventor： Sunghee KANG , Jungwook SIM , Woonghyeob SONG , Dongjin YUN , Chaeyoon BAE
Abstract: The present disclosure relates to a power device protection apparatus. A power device protection apparatus according to an embodiment of the present invention comprises: a comparator which is connected to a power device, and determines whether an overcurrent of the power device occurs; and a control unit which controls the comparator so as to change, by software, a overcurrent reference value for determining whether the overcurrent occurs, wherein the control unit receives temperature information of the power device, changes the overcurrent reference value on the basis of the temperature information, and performs the overcurrent reference value change according to the temperature information, on the basis of the characteristics of the power device.
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公开(公告)号：US20230223211A1
公开(公告)日：2023-07-13
申请号：US17923159
申请日：2021-03-29
Applicant: LS ELECTRIC CO., LTD.
Inventor： Woonghyeob SONG , Jungwook SIM
CPC classification number: H01H9/20 , H01H9/541 , H01H71/10 , H01H71/0214 , H01H9/0264
Abstract: The present disclosure relates to a semiconductor circuit breaker, and more specifically, to a semiconductor circuit breaker provided with a detachable interface module. The semiconductor circuit breaker, according to one embodiment of the present disclosure, comprises: a circuit breaker main body connected to a main circuit and provided with a module receiving unit on the outer surface thereof; and an interface module provided independently from the circuit breaker main body and detachably coupled to the module receiving unit. The circuit breaker main body comprises: a terminal cover rotatably coupled to a terminal unit of the circuit breaker main body; and an interlock member provided to the circuit breaker main body and restricting or releasing the opening of the terminal cover. The interface module comprises an interlock driving unit for operating the interlock member.
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