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公开(公告)号：US11336099B2
公开(公告)日：2022-05-17
申请号：US17266832
申请日：2019-07-24
Applicant: LS ELECTRIC CO., LTD.
Inventor： Ju Ho Lim
Abstract: A photovoltaic system and a control method therefor are disclosed. A photovoltaic system according to an embodiment of the present disclosure comprises: a solar cell array for converting solar energy into electric power; a power management device for monitoring the power generation amount of the solar cell array and the reverse power from an external power grid; an energy storage device charged by receiving the electric power produced by the solar cell array or the power of the external power grid; and a power control device for supplying, to the energy storage device, the electric power generated by the solar cell array or the power of the external power grid in response to a valid power command, wherein the power management device generates the valid power command which has different values according to whether the reverse power is generated by the external power grid.
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公开(公告)号：US20220140551A1
公开(公告)日：2022-05-05
申请号：US17433282
申请日：2019-07-11
Applicant: LS ELECTRIC CO., LTD.
Inventor： Seung Kyun JIN
Abstract: The present disclosure relates to a connector for a bus bar including a bar-shaped finger divided into a central portion, a pair of end portions symmetrically formed on opposite sides of the central portion, and a pair of connecting portions respectively formed between the central portion and the pair of end portions. The connector for a bus bar includes: a plurality of fingers, at least two or more of which are stacked in the thickness direction perpendicular to the longitudinal direction to form one side portion and at least two or more of which are stacked in the thickness direction to form the other side portion disposed opposite to the one side portion; a pair of coil springs, one end and the other end of which is fixed to the one side portion and the other side portion to be arranged at a predetermined distance apart from each other with respect to the central portion of the finger; and a bracket for supporting the one side portion and the other side portion.
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公开(公告)号：US20220117096A1
公开(公告)日：2022-04-14
申请号：US17431770
申请日：2019-09-11
Applicant: LS ELECTRIC CO., LTD.
Inventor： Young-Hoon SONG
Abstract: 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：US20220115902A1
公开(公告)日：2022-04-14
申请号：US17275557
申请日：2019-09-10
Applicant: LS ELECTRIC CO., LTD.
Inventor： Minjun PARK , Dongjin YUN , Jihong KIM , Dohyun KIM , Kwangkyu HWANG
IPC: H02J9/06
Abstract: The present specification relates to a power supply system capable of supplying uninterruptible power, the system comprising a plurality of circuit breakers for controlling the connections between a plurality of power source modules, to control power demand and supply through opening or closing of the circuit breakers according to various situations occurring in the system, so as to enable a UPS function between the plurality of power source modules.
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公开(公告)号：US11280835B2
公开(公告)日：2022-03-22
申请号：US17026965
申请日：2020-09-21
Applicant: LS ELECTRIC CO., LTD.
Inventor： Chun-Suk Yang , Hong-Seok Kim
IPC: G01R31/327 , H02P27/08 , H02M1/08 , H02M7/5387 , H02M1/32 , G01R31/42 , H02M7/797 , H02M1/00
Abstract: A diagnosing device of a three phase inverter is provided, which includes a relay connected in series with a capacitor disposed on a DC link, an initial charging resistor connected in parallel to the relay, an inverter comprising a switching device for controlling a power supply to three phase output lines, a current sensor disposed on a connection line connecting between the DC link and the inverter to sense a current, and a control unit for driving the switching device and diagnosing at least one of opening and shorting of the switching device according to whether the current is sensed or not.
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Patent Agency Ranking
公开(公告)号：US20220069614A1
公开(公告)日：2022-03-03
申请号：US17275019
申请日：2019-09-11
Applicant: LS ELECTRIC CO., LTD.
Inventor： Jihong KIM , Kwangkyu HWANG , Dohyun KIM , Minjun PARK
Abstract: The present specification relates to an uninterruptible power supply device, an uninterruptible power supply system and a method for controlling the uninterruptible power supply system, and relates to a power supply device comprising a circuit breaker for switching connection to a power bus, thereby controlling the reception and supply of the power by opening and closing the circuit breaker according to various situations occurring in a system, a power supply system and a method for controlling the power supply system.
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公开(公告)号：US11211214B2
公开(公告)日：2021-12-28
申请号：US16954851
申请日：2018-11-12
Applicant: LS ELECTRIC CO., LTD.
Inventor： Sangchul Lee
Abstract: A DC circuit breaker according to various embodiments may comprise: a first terminal unit connected to a power source; and a second terminal unit connected to the first terminal unit and connected to a load, wherein the first terminal unit includes at least a pair of first terminals connected to each other in parallel and connected to the power source, and the second terminal unit includes at least a pair of second terminals corresponding respectively to the first terminals and connected to each other in parallel so as to be connected to the load.
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公开(公告)号：US11205970B2
公开(公告)日：2021-12-21
申请号：US16960209
申请日：2019-01-11
Applicant: LS ELECTRIC CO., LTD.
Inventor： Kwang-Soo Koh
IPC: H02M7/493 , H02J3/32 , H02J3/38 , H02J15/00 , H02M7/53862
Abstract: The grid-connected inverter system according to one embodiment of the present invention may convert direct current supplied from a direct current source into alternating current, receive a control command from an upper level controller and a power electronics building block group comprising a plurality of power electronics building blocks for supplying the converted alternating current to a grid, determine the number of power electronics building blocks which will operate according to the control command, and transmit a control signal for operating the determined number of power electronics building blocks to corresponding power electronics building blocks.
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公开(公告)号：US20210384711A1
公开(公告)日：2021-12-09
申请号：US17276900
申请日：2019-08-29
Applicant: LS ELECTRIC CO., LTD.
Inventor： Hyukil KWON , Kwangkyu HWANG , Kwanseung AN
Abstract: A power supply apparatus includes a plurality of power modules for receiving alternating current power to provide the power to a load; an uninterruptible supply module to supply self-power to the load; an inverter module installed on one side of the power modules or the uninterruptible supply module to convert the power and provide converted power to the load; direct current bus bars provided inside enclosures of the power modules, the uninterruptible supply module, and the inverter module, respectively; and a connection bus bar for connecting adjacent direct current bus bars, wherein in the power modules and the uninterruptible supply module, an alternating current/direct current converter or a direct current/direct current converter is provided in the upper portion of the direct current bus bar, or the alternating current/direct current converter or the direct current/direct current converter is provided in the lower portion of the direct current bus bar.
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公开(公告)号：US11183352B2
公开(公告)日：2021-11-23
申请号：US16857793
申请日：2020-04-24
Applicant: LS ELECTRIC CO., LTD.
Inventor： Seungpil Yang
Abstract: Disclosed is an air circuit breaker including a safety cover. According to embodiments disclosed herein, a setting unit of an overcurrent trip relay exposed to the outside through an opening is covered by the safety cover, and thus manipulation of the setting unit is not allowed before opening the safety cover. Accordingly, an accident due to malfunction or manipulation of the overcurrent trip relay by an unauthorized person may be prevented.
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