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公开(公告)号：US20160156344A1
公开(公告)日：2016-06-02
申请号：US14898098
申请日：2014-06-10
Applicant: ALSTOM TECHNOLOGY LTD
Inventor： Colin Charnock Davidson
IPC: H03K17/16 , H03K17/687 , H02M7/68 , H03K17/66
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.
Abstract translation: 半导体开关电路包括主电流分支，其包括至少一个主半导体开关元件，并且当主半导体开关元件或每个主半导体开关元件接通时，电流在第一方向上流动。 半导体开关电路还包括与主电流分支并联连接的辅助电流分支。 辅助电流分支包括至少一个辅助半导体开关元件。 一个或多个控制单元被配置为在该半导体开关元件或每个主半导体开关元件接通时接通该辅助半导体开关元件或每个辅助半导体开关元件，以便经由辅助电流分支选择性地产生替代电流路径，从而沿第一方向流过主电流 电流分支被转向以流过替代电流路径以减少流过该主要半导体开关元件或每个主要半导体开关元件的电流的变化率。
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公开(公告)号：US20150214834A1
公开(公告)日：2015-07-30
申请号：US14685246
申请日：2015-04-13
Applicant: ALSTOM Technology Ltd.
Inventor： David Trainer , Colin Charnock Davidson , Nnamdi Okaeme
CPC classification number: H02M1/4208 , G05F1/70 , H02J3/36 , H02M7/04 , H02M7/483 , H02M2007/4835 , Y02E60/60 , Y10T307/50
Abstract: A power electronic converter for use in high voltage direct current power transmission and reactive power compensation comprises a plurality of switching elements interconnecting in use a DC network and one or more AC networks, the plurality of switching elements being controllable in use to facilitate power conversion between the AC and DC networks, wherein in use, the plurality of switching elements are controllable to form one or more short circuits within the power electronic converter so as to define one or more primary current flow paths, the or each primary current flow path including a respective one of the AC networks and the power electronic converter and bypassing the DC network.
Abstract translation: 用于高压直流电力传输和无功补偿的电力电子转换器包括在使用中互连DC网络和一个或多个AC网络的多个开关元件，所述多个开关元件在使用中是可控的，以便于在 AC和DC网络，其中在使用中，所述多个开关元件是可控制的，以在所述电力电子转换器内形成一个或多个短路，以便限定一个或多个初级电流流动路径，所述或每个初级电流流动路径包括 相应的一个交流网络和电力电子转换器，并绕过直流网络。
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公开(公告)号：US20150108090A1
公开(公告)日：2015-04-23
申请号：US14404286
申请日：2013-05-29
Applicant: ALSTOM Technology Ltd.
Inventor： Colin Donald Murray Oates , Colin Charnock Davidson , Alistair Burnett
CPC classification number: H01H33/12 , H01H33/596 , H01H33/66 , H02H3/087
Abstract: A circuit breaker apparatus (32) comprises one module (30) or a plurality of series-connected modules (30), the or each module (30) including: first and second conduction paths (34, 36); and first and second terminals (38, 40) for connection to an electrical network (42), each conduction path (34, 36) extending between the first and second terminals (38, 40); the first conduction path (34) including a first vacuum switching element (52) to selectively close to allow current to flow between the first and second terminals (38, 40) through the first conduction path (34) in a first mode of operation, or open to block current from flowing between the first and second terminals (38, 40) through the first conduction path (34) in a second mode of operation; the second conduction path (36) including a second vacuum switching element (56) to selectively open to block current from flowing between the first and second terminals (38, 40) through the second conduction path (36) in the first mode of operation, or close to allow current to flow between the first and second terminals (38,40) through the second conduction path (36) in the second mode of operation, wherein the first and second vacuum switching elements (34, 36) define a break-before-make switching arrangement; the second conduction path (36) further including a primary energy storage device (74) to oppose current flowing between the first and second terminals (38, 40) through the second conduction path (36) in the second mode of operation; and the or each module (30) further including a commutation circuit (72) to establish a resonant current in the first vacuum switching element to quench an arc current appearing across the first vacuum switching element (52) in the second mode of operation.
Abstract translation: 断路器装置（32）包括一个模块（30）或多个串联模块（30），所述模块（30）包括：第一和第二导电路径（34,36）; 以及用于连接到电网（42）的第一和第二端子（38,40），在所述第一和第二端子（38,40）之间延伸的每个导电路径（34,36）。 所述第一传导路径（34）包括第一真空开关元件（52），以在第一操作模式中选择性地接近以允许电流通过所述第一导电路径（34）在所述第一和第二端子（38,40）之间流动， 或者以第二操作模式通过第一导电路径（34）在第一和第二端子（38,40）之间开路以阻止电流流动; 所述第二传导路径（36）包括第二真空开关元件（56），以在所述第一操作模式中选择性地打开以阻止电流在所述第一和第二端子（38,40）之间流过所述第二导电路径（36） 或接近以允许电流在第二操作模式中通过第二传导路径（36,40）在第一和第二端子（38,40）之间流动，其中第一和第二真空开关元件（34,36） 前置切换布置; 所述第二传导路径（36）还包括在所述第二操作模式中通过所述第二传导路径（36）与在所述第一和第二端子（38,40）之间流动的电流的一次能量存储装置（74） 并且所述或每个模块（30）还包括换向电路（72），以在所述第一真空开关元件中建立谐振电流，以在所述第二操作模式中淬灭出现在所述第一真空开关元件（52）两端的电弧电流。
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公开(公告)号：US09490693B2
公开(公告)日：2016-11-08
申请号：US14685246
申请日：2015-04-13
Applicant: ALSTOM Technology Ltd.
Inventor： David Trainer , Colin Charnock Davidson , Nnamdi Okaeme
IPC: H02M7/757 , H02H7/26 , H02M5/458 , H02M5/45 , H02M1/42 , H02J3/36 , H02M7/483 , G05F1/70 , H02M7/04
CPC classification number: H02M1/4208 , G05F1/70 , H02J3/36 , H02M7/04 , H02M7/483 , H02M2007/4835 , Y02E60/60 , Y10T307/50
Abstract: A power electronic converter for use in high voltage direct current power transmission and reactive power compensation comprises a plurality of switching elements interconnecting in use a DC network and one or more AC networks, the plurality of switching elements being controllable in use to facilitate power conversion between the AC and DC networks, wherein in use, the plurality of switching elements are controllable to form one or more short circuits within the power electronic converter so as to define one or more primary current flow paths, the or each primary current flow path including a respective one of the AC networks and the power electronic converter and bypassing the DC network.
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公开(公告)号：US20160048149A1
公开(公告)日：2016-02-18
申请号：US14782785
申请日：2014-02-18
Applicant: ALSTOM TECHNOLOGY LTD
Inventor： Colin Charnock Davidson
IPC: G05F1/59
Abstract: A current limiter for selectively limiting a rate of change of current in a DC electrical network may include a first electrical block including an inductive element and a second electrical block including a bidirectional switch. The first electrical block is connected in parallel with the second electrical block between first and second terminals, and the first and second terminals are connectable to the DC electrical network. The bidirectional switch is switchable to: (1) a first mode to permit current flow through the second electrical block in a first current direction and at the same time inhibit current flow through the second electrical block in a second, opposite current direction; and (2) a second mode to permit current flow through the second electrical block in the second current direction and at the same time inhibit current flow through the second electrical block in the first current direction.
Abstract translation: 用于选择性地限制DC电网中的电流变化率的电流限制器可以包括包括电感元件的第一电气块和包括双向开关的第二电气块。 第一电气块与第一和第二端子之间的第二电气块并联连接，第一和第二端子可连接到直流电网络。 双向开关可切换为：（1）允许电流在第一电流方向上流过第二电阻的第一模式，同时在第二相反的电流方向上阻止电流流过第二电阻; 和（2）第二模式，以允许电流在第二电流方向流过第二电阻，并同时阻止电流在第一电流方向流过第二电阻。
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Patent Agency Ranking
公开(公告)号：US20150372474A1
公开(公告)日：2015-12-24
申请号：US14767398
申请日：2013-11-20
Applicant: ALSTOM TECHNOLOGY LTD
Inventor： Colin Charnock Davidson , Robert Whitehouse
IPC: H02H3/087
Abstract: A circuit interruption device includes a main branch; a secondary branch having an electrical on-resistance which is higher than an electrical on-resistance of the main branch; and first and second terminals for connection to an electrical network, the main and secondary branches extending between the first and second terminals. The main branch includes a switching apparatus which is switchable to selectively allow current to flow in the main branch in a normal mode of operation or commutate current from the main branch to the secondary branch in a fault mode of operation. The secondary branch includes a switching device, the switching device including a normally-on switching element. The secondary branch further includes a control unit in communication with the normally-on switching element. The secondary branch further includes a power extraction circuit which is electrically coupled with the control unit. During the normal mode of operation the normally-on switching element is in an on-state to permit the secondary branch to conduct current, and during the fault mode of operation the control unit controls the switching of the or each normally-on switching element to an off-state to inhibit current flow in the secondary branch.
Abstract translation: 电路中断装置包括主分支; 具有比主分支的导通电阻高的导通电阻的次级分支; 以及用于连接到电网的第一和第二终端，所述主分支和第二分支在第一和第二终端之间延伸。 主分支包括切换装置，其可切换以选择性地允许电流在正常操作模式或主要分支到次级分支的故障操作模式中流过主分支。 次级分支包括开关装置，开关装置包括常开开关元件。 辅分支还包括与常开开关元件连通的控制单元。 次级分支还包括与控制单元电耦合的功率提取电路。 在正常操作模式期间，常开开关元件处于导通状态以允许次级分支导通电流，并且在故障操作模式期间，控制单元控制该或每个常开开关元件的切换到 关闭状态以抑制次级分支中的电流流动。
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公开(公告)号：US20150109709A1
公开(公告)日：2015-04-23
申请号：US14402631
申请日：2013-05-23
Applicant: ALSTOM Technology Ltd
Inventor： Sarb Calgotra , Michael Evans , Colin Charnock Davidson
Abstract: An electrical field shielding assembly comprises at least one electrically conductive, shielding element (12) that is hingably mounted on the electrical field shielding assembly, wherein the or each shielding element (12) is hingably movable between an open position in which an access opening in the electrical field shielding assembly is created and a closed position in which the access opening in the electrical field shielding assembly is closed.
Abstract translation: 电场屏蔽组件包括至少一个可铰接地安装在电场屏蔽组件上的导电屏蔽元件（12），其中所述屏蔽元件（或每个屏蔽元件）可铰接地在打开位置之间移动， 产生电场屏蔽组件，并且关闭位置，其中电场屏蔽组件中的进入开口关闭。
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公开(公告)号：US09972997B2
公开(公告)日：2018-05-15
申请号：US14423067
申请日：2013-07-02
Applicant: ALSTOM Technology Ltd
Inventor： Colin Charnock Davidson
IPC: H02H3/08 , H02H3/087 , H02H9/02 , H02H3/10 , H02H9/04 , H03K17/0814 , H03K17/082 , H03K17/12 , H03K17/30 , H03K17/73
CPC classification number: H02H9/02 , H02H3/087 , H02H9/04 , H02H9/043 , H03K17/08148 , H03K17/0828 , H03K17/127 , H03K17/305 , H03K17/73
Abstract: A switching device (28) comprising a primary switching block (30) including at least one semiconductor switch (34); and a switching control unit (32) to control the switching of the or each semiconductor switch (34). The switching device further includes a crowbar circuit (46) comprising a crowbar switch (56) switchable to selectively allow current to flow through the crowbar switch (56) in order to bypass the or each switching module; and a secondary switching block including a switching element (58) connected across a control electrode and a cathode of the crowbar switch (56). The switching element (58) is in communication with the switching control unit (32) to receive, in use, a control signal (66) generated by the switching control unit (32) when the primary switching block (30) is operating within predefined operating parameters.
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公开(公告)号：US09791876B2
公开(公告)日：2017-10-17
申请号：US14782785
申请日：2014-02-18
Applicant: Alstom Technology Ltd
Inventor： Colin Charnock Davidson
Abstract: A current limiter for selectively limiting a rate of change of current in a DC electrical network may include a first electrical block including an inductive element and a second electrical block including a bidirectional switch. The first electrical block is connected in parallel with the second electrical block between first and second terminals, and the first and second terminals are connectable to the DC electrical network. The bidirectional switch is switchable to: (1) a first mode to permit current flow through the second electrical block in a first current direction and at the same time inhibit current flow through the second electrical block in a second, opposite current direction; and (2) a second mode to permit current flow through the second electrical block in the second current direction and at the same time inhibit current flow through the second electrical block in the first current direction.
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公开(公告)号：US09780557B2
公开(公告)日：2017-10-03
申请号：US14653683
申请日：2013-11-13
Applicant: ALSTOM Technology Ltd
Inventor： Colin Charnock Davidson , Robert Whitehouse
CPC classification number: H02H9/02 , H02M7/483 , H02M2007/4835
Abstract: An electrical apparatus (10) comprises: first and second terminals (18,20) for connection to an electrical circuit; a chain-link converter (22) connected between the first and second terminals (18,20), the chain-link converter (22) including a plurality of chain-link modules (24), each chain-link module (24) including at least one switching element (26) and at least one energy storage device (28), the or each switching element (26) and the or each energy storage device (28) of each chain-link module (24) combining to selectively provide a voltage source; and a protection device (32) connected across an electrical block (34) that includes at least two of the plurality of chain-link modules (24), the protection device (32) including a plurality of series-connected semiconductor devices (36), wherein the protection device (32) selectively provides a current-conductive path to allow at least part of a current flowing in the electrical apparatus (10) to bypass the electrical block (34).
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