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1. 发明公开

EP3297149A1 PARALLEL-CONNECTED CONVERTER ASSEMBLY 审中-公开
标题翻译：并联转换器组件
公开(公告)号：EP3297149A1
公开(公告)日：2018-03-21
申请号：EP16189081.9
申请日：2016-09-15
申请人： General Electric Technology GmbH
发明人： TRAINER, David Reginald , GINNAREDDY, Rajseker , JASIM, Omar Fadhel , BARKER, Carl David , MORENO MUÑOZ, Francisco Jose , NOLAN, Andrew
IPC分类号： H02M7/49 , H02J3/36 , H02M7/493 , H02M7/757 , H02M7/483
CPC分类号： H02M7/49 , H02J3/1842 , H02J3/36 , H02J2003/365 , H02M7/493 , H02M7/7575 , H02M2007/4835 , Y02E40/22 , Y02E60/60
摘要： A parallel-connected converter assembly (40) comprises: first and second converters (42, 44), each converter (42, 44) including first and second DC terminals, each converter (42, 44) including at least one converter limb extending between the corresponding DC terminals, each converter limb including first and second limb portions separated by an AC terminal (58), each AC terminal (58) connectable in use to an AC voltage (82), each limb portion including at least one director switch connected between the AC terminal (58) and a respective one of the first and second DC terminals, the director switches of the first and second limb portions operable to switch the respective limb portions into and out of circuit between the respective DC terminal and the AC terminal (58); first and second DC transmission media (46, 48) respectively including first and second DC network terminals (78, 80) connectable in use to a DC network, the first DC transmission medium (78) interconnecting the first DC terminals of the converters (42, 44), the second DC transmission medium (80) interconnecting the second DC terminals of the converters (42, 44); and a controller programmed to selectively control the switching of the director switches of each converter limb to switch both of the corresponding limb portions into circuit concurrently to form a current conduction path in the corresponding converter (42, 44), the respective current conduction path configured to carry a current for presentation to the DC network terminals, wherein the controller is further programmed to selectively control the switching of the director switches so that, in an operating cycle of the parallel-connected converter assembly (40), the parallel-connected converter assembly (40) switches between: a first mode in which the respective current conduction path is formed in the first converter (42) and the respective current conduction path is not formed in the second converter (44); and a second mode in which the respective current conduction path is formed in the second converter (44) and the respective current conduction path is not formed in the first converter (42).
摘要翻译：并联连接的转换器组件（40）包括：第一和第二转换器（42,44），每个转换器（42,44）包括第一和第二DC端子，每个转换器（42,44）包括至少一个转换器分支，相应的DC端子，每个转换器支路包括由AC端子（58）分开的第一和第二支路部分，每个AC端子（58）在使用时可连接到AC电压（82），每个支路部分包括连接的至少一个控制器开关在AC端子（58）与第一和第二DC端子中的相应的一个之间，第一和第二臂部分的导向器开关可操作以将相应的臂部分切换进入和离开相应DC端子和AC端子之间的电路（58）; 第一和第二DC传输介质（46,48），分别包括可连接到DC网络的第一和第二DC网络端子（78,80），所述第一DC传输介质（78）将所述转换器的第一DC端子，所述第二DC传输介质（80）将所述转换器（42,44）的所述第二DC端子互连; 以及控制器，其被编程为选择性地控制每个转换器臂的导向器开关的切换，以将两个对应的臂部分同时切换到电路中以在对应的转换器（42,44）中形成电流传导路径，相应的电流传导路径被配置以向所述DC网络终端传送用于呈现的电流，其中所述控制器被进一步编程为选择性地控制所述导向器开关的切换，使得在所述并联连接的转换器组件（40）的操作循环中，所述并联连接的转换器其中，在第一转换器（42）中形成相应的电流传导路径并且在第二转换器（44）中没有形成相应的电流传导路径的第一模式; 以及第二模式，其中各个电流传导路径形成在第二转换器（44）中并且相应的电流传导路径不形成在第一转换器（42）中。

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