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公开(公告)号：US20200235728A1
公开(公告)日：2020-07-23
申请号：US16486691
申请日：2018-02-08
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Colin Charnock Davidson
Abstract: In the field of gate drivers for switching devices with a gate terminal via which the switching device can be turned on and off, a switching stage (10; 90) comprises first and second input terminals (12, 14) that are connectable in use with corresponding positive and negative terminals (16, 18) of a regulated voltage source (20). The switching stage (10; 80; 90) also includes an output terminal (34) which is connectable in use with a gate terminal (36) of a switching device (28). In addition the switching stage (10; 80; 90) includes a secondary energy storage device (38) that is electrically connected with the first and second input terminals (12, 14) to in use receive and store energy via the regulated voltage source (20). The switching stage (10; 90) in use selectively provides a first switching path (50) between the regulated voltage source (20) and the output terminal (34) to apply a voltage at a first polarity to the gate terminal (36), and a second switching path (52) between the secondary energy storage device (38) and the output terminal (34) to apply a voltage at a second polarity opposite the first polarity to the gate terminal (36).
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公开(公告)号：US20200014292A1
公开(公告)日：2020-01-09
申请号：US16486714
申请日：2018-01-30
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Colin Charnock Davidson
Abstract: In the field of gate drivers there is provided a regulated voltage source (10; 10A, 10B), for a gate driver (200; 300) of a switching device (18) having a gate terminal (26) via which the switching device (18) can at least be turned on. The regulated voltage source (10; 10A, 10B) comprises an input terminal (12) via which the regulated voltage source (10; 10A, 10B) in use receives current. The regulated voltage source (10; 10A, 10B) also includes first and second connection terminals (22, 24) via at least one of which the regulated voltage source (10; 10A, 10B) in use applies a voltage (V) to a gate terminal (26) of a switching device (18). In addition the regulated voltage source (10; 10A, 10B) includes a regulated energy storage stage (28) which is electrically connected between the input and output terminals (12, 22, 24) and which includes a primary energy storage device (30; 30A, 30B) connected in parallel with a storage limiter (34) to limit the amount of energy stored in the primary energy storage device (30; 30A, 30B). Between the primary energy storage device (30; 30A, 30B) and the storage limiter (34) lies an energy retainer (46) to prevent the escape of energy from the primary energy storage device (30; 30A, 30B) via the storage limiter (34). The regulated voltage source (10; 10A, 10B) further includes a freewheel diode (50) that is arranged in parallel with the energy storage stage (28) and a secondary energy storage device (52; 52A, 52B) which is arranged in parallel with each of the freewheel diode (50) and the energy storage stage (28).
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公开(公告)号：US09813054B2
公开(公告)日：2017-11-07
申请号：US14898095
申请日：2014-06-10
Applicant: General Electric Technology GmbH
Inventor： Colin Charnock Davidson
IPC: H02M5/458 , H03K17/16 , H03K17/0814 , H03K17/10 , H02M5/45 , H02M7/68 , H03K17/66 , H03K17/687
CPC classification number: H03K17/161 , H02M5/45 , H02M5/458 , H02M7/68 , H03K17/08144 , H03K17/105 , H03K17/16 , H03K17/66 , H03K17/687
Abstract: A semiconductor switching string includes a plurality of series-connected semiconductor switching assemblies, each having a main semiconductor switching element that includes first and second connection terminals. The main semiconductor switching element also has an auxiliary semiconductor switching element electrically connected between the first and second connection terminals. Each semiconductor switching assembly also includes a control unit configured to switch on a respective auxiliary semiconductor switching element to selectively create an alternative current path between the first and second connection terminals whereby current is diverted to flow through the alternative current path to reduce the voltage across the corresponding main semiconductor switching element. The or each control unit is further configured to switch on the auxiliary semiconductor switching element when the voltage across the corresponding main semiconductor switching element differs from a voltage reference derived from the voltage across all of the main semiconductor switching elements.
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公开(公告)号：US11652398B2
公开(公告)日：2023-05-16
申请号：US16978852
申请日：2019-03-05
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Colin Charnock Davidson , Francisco Javier Chivite-Zabalza , John Lewis Outram , Jerome Gregoire
CPC classification number: H02M1/32 , H02M1/0095 , H02M7/4835 , H02M7/4837 , H02M7/539
Abstract: The present disclosure relates to a voltage source converter (VSC) (300) comprising: a first MOSFET switching element (302) including a first body diode (306); a second MOSFET switching element (304) including a second body diode (308), the second MOSFET switching element (304) being connected in series with the first MOSFET switching element (302); a protection device (318) connected in parallel with the second MOSFET switching element (304); and a controller (312), wherein the controller (312) is configured, on detection of an overcurrent event, to: switch off the first MOSFET switching element (302); and switch off the second MOSFET switching element (304), thereby forcing current flowing in the VSC (300) following the overcurrent event to flow through the second body diode (308) rather than through conducting channels of the first and second MOSFET switching elements (302, 304).
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公开(公告)号：US20210013816A1
公开(公告)日：2021-01-14
申请号：US17042121
申请日：2019-03-07
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Colin Charnock Davidson , Francisco Javier Chivite Zabalza , John Lewis Outram , Jerome Gregoire , Stefan Schroeder
IPC: H02M7/5388 , H02M7/483
Abstract: This application relates to a cell (1200) or sub-module for a voltage source converter (1201). The cell includes an energy storage apparatus (101; 101a, 101b) and a plurality of dual-switch semiconductor packages (201), each having first and second semiconductor switches (202, 203) connected in series. The cell is operable in an active state in which an energy storage apparatus (101; 101a, 101b) is electrically connected in series between cell terminals (102a, 102b) and a bypass state in the cell terminals (102a, 102b) are electrically connected via a path that bypasses the first energy storage apparatus. The plurality of dual-switch semiconductor switch packages are configured to provide a first set of semiconductor switches (301;401) connected between nodes of the cell that are electrically connected in the first active state and electrically disconnected in the first bypass state; and a second set of semiconductor switches (302a, 302b; 402a, 402b) is connected between nodes of the cell that are electrically disconnected in the first active state and electrically connected in the bypass state. The second set of switches comprises a greater number of switches in parallel than the first set of switches.
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Patent Agency Ranking
公开(公告)号：US20200373921A1
公开(公告)日：2020-11-26
申请号：US16966273
申请日：2020-01-31
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Colin Charnock Davidson
IPC: H03K17/567
Abstract: A switching apparatus comprises: a first current-conductive branch (12) including a first switching element (24), the first switching element (24) configured to be switchable to selectively permit and block a flow of current in the first current-conductive branch (12); a second current-conductive branch (14) including a second switching element (32), the second switching element (32) configured to be switchable to selectively permit and block a flow of current in the second current-conductive branch (14); and first and second terminals (18,20) for connection, in use, to an electrical network (22), wherein the first and second current-conductive branches (12,14) extend between the first and second terminals (18,20), wherein the switching apparatus further includes an inductance element (44) configured to carry, in use, a current flowing through the switching apparatus, the inductance element (44) electrically coupled to the second switching element (32) so that the inductance element (44) is configured as a power source for enabling the operation of the second switching element (32).
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公开(公告)号：US09819337B2
公开(公告)日：2017-11-14
申请号：US14898098
申请日：2014-06-10
Applicant: General Electric Technology GmbH
Inventor： Colin Charnock Davidson
IPC: G05F3/16 , H03K17/16 , H03K17/0814 , H03K17/10 , H02M5/45 , H02M5/458 , H02M7/68 , H03K17/66 , H03K17/687
CPC classification number: H03K17/161 , H02M5/45 , H02M5/458 , H02M7/68 , H03K17/08144 , H03K17/105 , H03K17/16 , H03K17/66 , H03K17/687
Abstract: A semiconductor switching circuit includes a main current branch which includes at least one main semiconductor switching element and through which current flows in a first direction when the or each main semiconductor switching element is switched on. The semiconductor switching circuit also includes an auxiliary current branch that is connected in parallel with the main current branch. The auxiliary current branch includes at least one auxiliary semiconductor switching element. One or more control units are configured to switch on the or each auxiliary semiconductor switching element as the or each main semiconductor switching element is switched on to selectively create an alternative current path via the auxiliary current branch whereby current flowing in the first direction through the main current branch is diverted instead to flow through the alternative current path to reduce the rate of change of current flowing through the or each main semiconductor switching element.
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公开(公告)号：US20210082643A1
公开(公告)日：2021-03-18
申请号：US16963703
申请日：2019-01-31
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Colin Charnock Davidson
Abstract: A switching apparatus comprises: a first current-conductive branch (12) including a first switching element (24), the first switching element (24) configured to be switchable to selectively permit and block a flow of current in the first current-conductive branch (12); a second current-conductive branch (14) including a second switching element (32), the second switching element (32) configured to be switchable to selectively permit and block a flow of current in the second current-conductive branch (14); and first and second terminals (18,20) for connection, in use, to an electrical network (22), wherein the first and second current-conductive branches (12,14) extend between the first and second terminals (18,20), wherein the first current-conductive branch (12) further includes an energy storage element electrically coupled to the second switching element (32) so that the energy storage element is configured as a power source for enabling the operation of the second switching element (32), and the first switching element (24) is configured to be switchable to selectively direct a current flowing in the first current-conductive branch (12) to flow through the energy storage element so as to store energy in the energy storage element.
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公开(公告)号：US10693289B2
公开(公告)日：2020-06-23
申请号：US15541614
申请日：2015-12-18
Applicant: General Electric Technology GmbH
Inventor： Colin Charnock Davidson
Abstract: A DC breakers and in particular to DC breaker modules suitable for use in a high voltage DC circuit. The breaker module comprises at least a first breaker circuit (enclosed within a conductive enclosure. The enclosure is configured such that the first breaker circuit can be connected (in an electrical path with a circuit external to the conductive enclosure. The conductive enclosure is further configured to be connected to a node of the electrical path such that, in use, the conductive enclosure is at the same voltage potential as the node of the circuit path. The conductive enclosure may be a standardised size and may, for example, be a standard shipping container. The methods and apparatus of the present application allow a DC breaker to be formed from modules that can be built, tested, transported and installed in a standardised enclosure.
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公开(公告)号：US20200153424A1
公开(公告)日：2020-05-14
申请号：US16617237
申请日：2018-06-01
Applicant: GENERAL ELECTRIC TECHNOLOGY GMBH
Inventor： Colin Charnock Davidson
Abstract: There is provided a switching apparatus (30,130) comprising: first and second nodes (32,34) operably connectable to a line voltage (44); first and second switching branches (38,40) connected in parallel between the first and second nodes (32,34), the first switching branch (38) including at least one first switching element (46,60); and the second switching branch (40) including a pair of switching assemblies connected in series between the first and second nodes (32,34), the second switching branch (40) further including a junction (48) between the pair of switching assemblies, each switching assembly including at leastone second switching element (50), at least one of the switching assemblies further including at least one impedance element (52), wherein the switching apparatus (30,130) further includes a shunt impedance (42) and a third node (36), the shunt impedance (42) arranged to form a permanent electrical connection between the junction (48) and the third node (36), the third node (36) operably connectable to a voltage that is different in magnitude to the line voltage (44), the or each impedance element (52) arranged in the corresponding switching assembly to combine with the shunt impedance (36) so as to define a current path which extends between the corresponding first or second node (32,34) and the third node (36).
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