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公开(公告)号：US20150357941A1
公开(公告)日：2015-12-10
申请号：US14760185
申请日：2013-10-16
CPC分类号： H02M7/757 , H02J3/36 , H02J2003/365 , H02M7/5152 , H02M7/7575 , H02M7/797 , H02M2001/0048 , H02M2007/4835 , Y02B70/1491 , Y02E60/60
摘要： A voltage source converter comprises: at least two converter limbs, each converter limb extending between DC terminals and having limb portions separated by an AC terminal. Each limb portion includes at least one switching element and at least one chain-link converter including series-connected modules. Each module includes at least one switching element and at least one energy storage device that combine to selectively provide a voltage source. The chain-link converter(s) form a branch to interconnect two AC terminals. Each limb portion is switchable to switch the corresponding chain-link converter(s) into and out of circuit with a respective DC terminal. The chain-link converter(s) is switchable to control the configuration of an AC voltage at each corresponding AC terminal. The converter further includes a control unit that coordinates the switching of the limb portions and the chain-link converter(s) to cause transfer of real power between the AC and DC electrical networks.
摘要翻译： 电压源转换器包括：至少两个转换器分支，每个转换器分支在直流端子之间延伸并且具有由AC端子分开的分支部分。 每个肢体部分包括至少一个开关元件和包括串联连接的模块的至少一个链节转换器。 每个模块包括至少一个开关元件和组合以选择性地提供电压源的至少一个能量存储装置。 链式转换器形成分支以互连两个AC端子。 每个肢体部分可切换以将相应的链式转换器与相应的直流端子切换成电路。 链式转换器可切换以控制每个相应AC端子处的AC电压的配置。 转换器还包括一个控制单元，该控制单元协调肢体部分和链式转换器的转换，以在AC电力网络和DC电力网络之间实现有功功率的传递。
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公开(公告)号：US20150357901A1
公开(公告)日：2015-12-10
申请号：US14760450
申请日：2013-12-06
CPC分类号： H02M1/12 , H02M7/066 , H02M2007/4835
摘要： A voltage source converter includes a converter limb extending between DC terminals and having limb portions separated by an AC terminal, the DC terminals being connectable to a DC electrical network and the AC terminal being connectable to an AC electrical network. Each limb portion includes at least one switching element and a chain-link converter including a series-connected modules, each module including at least one switching element and at least one energy storage device combining to selectively provide a voltage source. The chain-link converter is connected to the AC terminal, and the switching element(s) of each limb portion is switchable to switch the chain-link converter into and out of circuit with the corresponding DC terminal. The voltage source includes a control unit which coordinates the switching of the switching elements of the limb portions and the switching element(s) in each module of the chain-link converter.
摘要翻译： 电压源转换器包括在直流端子之间延伸并具有由AC端子分开的分支部分的转换器臂，所述DC端子可连接到DC电网并且AC端子可连接到AC电网络。 每个肢体部分包括至少一个开关元件和包括串联连接的模块的链式转换器，每个模块包括至少一个开关元件和组合以选择性地提供电压源的至少一个能量存储装置。 链式转换器连接到AC端子，并且每个支路部分的开关元件可切换，以使链式转换器与相应的直流端子进行电路切换。 电压源包括控制单元，其控制链节转换器的每个模块中的肢体部分的开关元件和开关元件的切换。
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公开(公告)号：US09768710B2
公开(公告)日：2017-09-19
申请号：US14760183
申请日：2013-12-06
CPC分类号： H02M7/217 , H02M7/219 , H02M7/483 , H02M7/493 , H02M2007/4835
摘要： A voltage source converter (30) comprises a converter limb (36), having primary and secondary limbs connected in parallel between first and second DC terminals (32,34), the primary limb element including first and second primary limb element portions (38,40) separated by a third terminal (42), being connectable to an AC electrical network (46), each primary limb element portion (38,40) including at least one primary switching element (50), the secondary limb including first and second secondary limb element portions (52,54) separated by a junction (56), and including a DC side chain-link converter (58), and a connection interconnecting the third terminal (42) and the junction (56) wherein the voltage source converter (30) further includes a control unit (62) controlling the switching of the respective switching elements.
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公开(公告)号：US09755550B2
公开(公告)日：2017-09-05
申请号：US14888692
申请日：2014-04-03
IPC分类号： H02M1/38 , H02M7/483 , H02M7/219 , H02M1/12 , H02J3/36 , H02M7/68 , H02J5/00 , H02M1/08 , H02M1/00
CPC分类号： H02M7/68 , H02J3/36 , H02J5/00 , H02M1/083 , H02M1/12 , H02M1/38 , H02M7/219 , H02M7/483 , H02M2001/0058 , H02M2007/4835
摘要： A voltage source converter includes a converter limb having limb portions separated by an AC terminal and extending between DC terminals, each limb portion including a primary switching element to switch the limb portion into and out of circuit. The converter further includes an auxiliary limb. The primary switching element of each limb portion is switchable to switch the auxiliary limb into and out of circuit with the corresponding limb portion. The converter further includes a control unit to, in one mode, inject a circulation current that flows in one direction in one of the limb portions and minimize a current flowing in the opposite direction in that limb portion. Each primary switching element switches the respective limb portion into or out of circuit following the minimization of the limb portion current by the circulation current.
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公开(公告)号：US20160352239A1
公开(公告)日：2016-12-01
申请号：US14778535
申请日：2014-02-19
CPC分类号： H02M5/458 , H02M1/15 , H02M7/06 , H02M7/483 , H02M2007/4835
摘要： Power converters are disclosed. One power electronic converter for connecting AC and DC electrical networks and transferring power therebetween includes a converter limb extending between two DC terminals and having limb portions separated by an AC terminal. Each limb portion includes a chain-link converter including at least one rationalized module that has first and second sets of series-connected current flow control elements connected in parallel with at least one energy storage device. The current flow control elements and energy storage device(s) in each rationalized module combine to selectively provide a voltage source to control the configuration of an AC voltage at the AC terminal. The converter further includes a controller to selectively control the switching of the current flow control elements to simultaneously switch both limb portions into circuit to form a current circulation path including the converter limb and the DC electrical network.
摘要翻译： 公开了功率转换器。 用于连接交流和直流电网并在其间传递功率的一个电力电子转换器包括在两个直流端子之间延伸并且具有由一个交流电源端分隔开的分支部分的转换器臂。 每个肢体部分包括链节转换器，其包括至少一个合理化的模块，其具有与至少一个能量存储装置并联连接的第一组和第二组串联电流流量控制元件。 每个合理化模块中的当前流量控制元件和能量存储装置组合以选择性地提供电压源来控制AC端子处的AC电压的配置。 转换器还包括控制器，用于选择性地控制电流控制元件的切换，以同时将两个肢部分转换成电路，以形成包括转换器支路和DC电网的电流循环路径。
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公开(公告)号：US09755432B2
公开(公告)日：2017-09-05
申请号：US14896907
申请日：2014-06-06
发明人： Colin Donald Murray Oates , David Reginald Trainer , Ralph Feldman , Michael Marc Claude Merlin , Timothy Charles Green
CPC分类号： H02J3/18 , H02J3/36 , H02M7/483 , H02M7/49 , H02M2001/0003 , H02M2007/4835
摘要： An alternate arm converter includes at least one converter limb that defines first and second limb portions. Each limb portion includes at least one director switch connected in series with a chain-link converter between one of two DC terminals and an AC terminal of the converter. The chain-link converters are operable to generate a voltage waveform at the AC terminal, and the director switches are operable to switch the respective chain-link converters in and out of circuit between the respective DC terminal and the AC terminal. The converter also includes a controller configured to selectively control the switching of each director switch to form a current circulation path including each limb portion and the DC network. The controller, during formation of the current circulation path, forces an alternating current to flow through the current circulation path to transfer energy between the chain-link converters of the limb portions.
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公开(公告)号：US09306392B2
公开(公告)日：2016-04-05
申请号：US14382291
申请日：2012-12-28
发明人： Colin Charnock Davidson , Kevin J. Dyke , Jose Maneiro , David Reginald Trainer , Nnamdi Okaeme
IPC分类号： H02J1/00 , H02J3/14 , H02J1/02 , H02H7/26 , H02J3/36 , H02H3/16 , H02J4/00 , H02H9/04 , H02M7/483 , H02M1/32
CPC分类号： H02J1/02 , H02H3/16 , H02H7/268 , H02H9/041 , H02J3/36 , H02J4/00 , H02J2003/365 , H02M1/32 , H02M2007/4835 , Y02E60/60 , Y10T307/445
摘要： A control circuit comprising: first and second terminals for respective connection to first and second power transmission lines; a current transmission path extending between the first and second terminals and having first and second current transmission path portions separated by a third terminal, either or both of the first and second current transmission path portions including at least one module, the or each module including at least one energy storage device; an auxiliary terminal for connection to ground or the second power transmission line; an energy conversion block for removing energy from the power transmission lines, the energy conversion block extending between the third and auxiliary terminals such that the energy conversion block branches from the current transmission path, the energy conversion block including at least one energy conversion element; and a control unit which selectively removes the or each energy storage device from the current transmission path.
摘要翻译： 一种控制电路，包括：第一和第二端子，用于分别连接到第一和第二输电线路; 当前传输路径在第一和第二终端之间延伸并且具有由第三终端隔开的第一和第二电流传输路径部分，第一和第二电流传输路径部分中的一个或两个包括至少一个模块，该或每个模块包括在 至少一个储能装置; 用于连接到地面或第二输电线路的辅助端子; 用于从所述输电线路去除能量的能量转换模块，所述能量转换模块在所述第三和辅助端子之间延伸，使得所述能量转换模块从所述当前传输路径分支，所述能量转换模块包括至少一个能量转换元件; 以及控制单元，其选择性地从当前传输路径移除或每个能量存储装置。
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公开(公告)号：US20150357931A1
公开(公告)日：2015-12-10
申请号：US14760183
申请日：2013-12-06
CPC分类号： H02M7/217 , H02M7/219 , H02M7/483 , H02M7/493 , H02M2007/4835
摘要： A voltage source converter (30) comprises a converter limb (36), having primary and secondary limbs connected in parallel between first and second DC terminals (32,34), the primary limb element including first and second primary limb element portions (38,40) separated by a third terminal (42), being connectable to an AC electrical network (46), each primary limb element portion (38,40) including at least one primary switching element (50), the secondary limb including first and second secondary limb element portions (52,54) separated by a junction (56), and including a DC side chain-link converter (58), and a connection interconnecting the third terminal (42) and the junction (56) wherein the voltage source converter (30) further includes a control unit (62) controlling the switching of the respective switching elements.
摘要翻译： 电压源转换器（30）包括转换器臂（36），其具有并联连接在第一和第二DC端子（32,34）之间的主臂和辅助臂，所述主肢元件包括第一和第二主肢元件部分（38， 40），其由第三端子（42）分开，可连接到AC电网（46），每个初级肢体元件部分（38,40）包括至少一个主开关元件（50），所述辅助臂包括第一和第二 由结（56）分隔并且包括直流侧链节转换器（58）和由第三端子（42）和接点（56）互连的连接的次级肢体元件部分（52,54），其中电压源 转换器（30）还包括控制各开关元件的切换的控制单元（62）。
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公开(公告)号：US20150049530A1
公开(公告)日：2015-02-19
申请号：US14385967
申请日：2013-03-20
IPC分类号： H02M7/797
CPC分类号： H02M7/797 , H02M7/219 , H02M2007/4835 , Y02E60/60
摘要： A power electronic converter (30), for connecting AC and DC networks (46,44) and transferring power therebetween, comprises: first and second DC terminals (32,34) defining a DC link for connection to a DC network (44); wherein, in use, the DC link has a reversible DC link voltage applied thereacross; at least one converter limb (36) extending between the first and second DC terminals (32,34) and having first and second limb portions (38,40) separated by an AC terminal (42) for connection to an AC network (46), each limb portion (38,40) including at least one rationalised module (52) having first and second sets of series-connected current flow control elements (54) connected in parallel with at least one energy storage device (56), each set of current flow control elements (54) including a primary active switching element to selectively direct current through the energy storage device (56) and a primary passive current check element to limit current flow through the rationalised module (52) to a single direction, the current flow control elements (54) and the or each energy storage device (56) combining to selectively provide a voltage source to synthesise an AC voltage at the AC terminal (42); and a first controller (60) to selectively switch the or each rationalised module (52) in each limb portion (38,40) to control the configuration of the AC voltage at the corresponding AC terminal (42) so as to transfer power from the AC network (46) to the DC network (44) in an AC to DC power transfer mode and to transfer power from the DC network (44) to the AC network (46) in a DC to AC power transfer mode, wherein each limb portion (38,40) includes: one or more secondary passive current check elements (48) to limit current flow through the corresponding limb portion (38,40) to a single direction between the corresponding AC and DC terminals (42,32,34), the or each secondary passive current check element (48) being connected in series with the or each rationalised module (52); or one or more secondary active switching elements that is connected in series with the or each rationalised module (52).
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公开(公告)号：US09847642B2
公开(公告)日：2017-12-19
申请号：US14770726
申请日：2013-12-02
CPC分类号： H02J3/36 , H02J2003/365 , H02M1/34 , H02M5/458 , H02M2001/344 , H02M2007/4835 , Y02E60/60
摘要： One circuit includes first and second primary terminals for connection to first and second power transmission lines and a current transmission path extending between the primary terminals and having current transmission path portions separated by a third primary terminal. A first current transmission path portion includes at least one primary switching element connected in series between the first and third primary terminals, the second current transmission path portion includes an energy conversion block connected between the second and third primary terminals, and the energy conversion block includes at least one primary energy conversion element for removing energy from the power transmission lines. The control circuit further includes a converter limb connected across the second and third primary terminals that includes an auxiliary converter. The control circuit further includes a control unit which controls the auxiliary converter to selectively provide a voltage source.
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