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公开(公告)号：US20220376610A1
公开(公告)日：2022-11-24
申请号：US17623388
申请日：2020-08-21
发明人： Doo Young LEE , Yong Hee PARK , Hong Ju JUNG
IPC分类号： H02M1/32
摘要： The present disclosure relates to a sub-module of a power converter, the sub-module capable of allowing failure-causing electric current to bypass the sub-module when a failure occurs in the sub-module. According to an embodiment of the present disclosure, there is proposed a sub-module of a power converter, the sub-module including an energy storage unit, at least one power semiconductor circuit connected, in parallel, to the energy storage unit and configured with a plurality of power semiconductor switches and a plurality of freewheeling diodes, an auxiliary switching element connected to the energy storage unit, turned on when a failure occurs, and thus allowing electric current from the energy storage unit to pass through, and a main switching element connected in series to an output terminal of the auxiliary switching element, arranged between two output terminals connected to one of one or more of the power semiconductor circuits, forced to undergo an induced failure due to application of a voltage stored in the energy storage unit through the auxiliary switching element, internally short-circuited, and thus connecting the output terminals to each other.
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公开(公告)号：US20220376611A1
公开(公告)日：2022-11-24
申请号：US17623395
申请日：2020-08-21
发明人： Doo Young LEE , Yong Hee PARK , Hong Ju JUNG
摘要： Proposed is a sub-module of a power converter, the sub-module capable of allowing failure-causing electric current to quickly bypass the sub-module when a failure occurs in the sub-module. A sub-module of a power converter according to an embodiment of the present disclosure, the sub-module including an energy storage unit, at least one power semiconductor circuit connected, in parallel, to the energy storage unit and configured with a plurality of power semiconductor switches and a plurality of freewheeling diodes, and a switching element arranged between two output terminals connected to one of one or more of the power semiconductor circuits, forced to undergo an induced failure when an induced-failure signal is input into a gate terminal thereof, and internally short-circuited, thereby connecting the output terminals to each other.
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公开(公告)号：US20230292477A1
公开(公告)日：2023-09-14
申请号：US18015712
申请日：2021-08-12
发明人： Yong Hee PARK , Hong Bean PARK , Hong Ju JUNG
CPC分类号： H05K9/0064 , H05K9/0007 , H05K7/2039
摘要： A component grounding system according to one embodiment includes a case for accommodating a plurality of components, a direct current (DC) capacitor disposed on one side of the case and electrically connected to the case, and a bus bar, disposed between the case and the DC capacitor, for connecting the case and the DC capacitor, the bus bar representing an electrode, wherein each of the plurality of components may be connected to the bus bar.
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公开(公告)号：US20220094279A1
公开(公告)日：2022-03-24
申请号：US17420301
申请日：2019-12-30
发明人： Yong Hee PARK , Sung Min OH , Doo Young LEE , Hong Ju JUNG
IPC分类号： H02M7/483
摘要： Proposed is a submodule of an MMC converter configured to stably supply power to a submodule controller controlling the submodule of an MMC converter. The submodule includes: an energy storage part storing electric energy therein; a plurality of switching elements connected in parallel to the energy storage part to have a shape of a bridge; a plurality of serially-connected resistors connected in parallel to the energy storage part; a plurality of DC-DC converters connected in parallel to a resistor of the plurality of resistors; a power switching part operating to select and output one voltage of voltages output from the plurality of DC-DC converters and a plurality of voltages input from outside; and a submodule controller operating with the voltage output by the power switching part so as to control switching operations of the plurality of switching elements.
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公开(公告)号：US20210165049A1
公开(公告)日：2021-06-03
申请号：US16769106
申请日：2018-12-20
发明人： Jung Won HONG , Hong Ju JUNG , Hyun Ho YOO , Joo Yeon LEE
摘要： A method for diagnosing a state of a submodule in initial charging of an MMC converter includes identifying, by an upper level controller, a stopped state of the MMC converter; supplying, by the upper level controller, an alternating current (AC) voltage from an AC side to N submodules in the MMC converter when the MMC converter is in the stopped state; charging a capacitor in the submodule with the supplied AC voltage to store an initial charging voltage in the capacitor; determining, by a submodule controller, whether the submodule is in a fault state and when the submodule is in a fault state, transmitting a fault signal to the upper level controller; and detecting, by a voltage detection unit of the submodule the initial charging voltage stored in the capacitor and transmitting the initial charging voltage to the submodule controller.
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公开(公告)号：US20240276683A1
公开(公告)日：2024-08-15
申请号：US18569200
申请日：2022-11-17
发明人： Yong Hee PARK , Nam Joon KU , Ki Ryang KWON , Jung Won HONG , Hong Ju JUNG
IPC分类号： H05K7/20
CPC分类号： H05K7/209
摘要： The present disclosure relates to a submodule. An enclosure 20 may form the exterior of the submodule 10 of the present disclosure. A first opening 25 may be formed on one side surface 24 of the enclosure 20. A heat sink 30 may be installed in the first opening 25. The inner surface of the heat sink 30 faces the inside of the enclosure 20, and the outer surface of the heat sink 30 may form one outer surface of the enclosure 20. A heating element such as a power semiconductor 32 or a control board may be installed on the heat sink 30. An inlet 34 and an outlet 36 may be provided at one side edge of the heat sink 30 to communicate with a flow path formed therein and allow cooling fluid to flow in and out.
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公开(公告)号：US20210152099A1
公开(公告)日：2021-05-20
申请号：US16618301
申请日：2018-05-28
发明人： Sung Min OH , Jung Won HONG , Jun Chol LEE , Hong Ju JUNG , Joo Yeon LEE
摘要： An MMC converter linked to a HVDC system and a sub-module constituting the MMC converter are proposed. The sub-module includes: first and second power semiconductor switches connected in series in the same direction, each including a semiconductor switch and a diode connected in anti-parallel to the semiconductor switch; a capacitor connected in parallel to the first and second power semiconductor switches connected together in series; a first terminal connected to a first node between the first and second power semiconductor switches; a second terminal connected to a second node between the second power semiconductor switch and the capacitor; third and fourth power semiconductor switches connected in series in opposite directions between the first and second terminals, each including a semiconductor switch and a diode connected in anti-parallel to the semiconductor switch; and a third terminal connected to a third node between the third and fourth power semiconductor switches.
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