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发明公开
CN105991055A 具有冗余运行能力的AC/DC换流器子模块及换流器 无效 - 驳回

具有冗余运行能力的AC/DC换流器子模块及换流器
摘要：
本发明涉及一种构成AC/DC换流器的换流器子模块单元，所述换流器子模块(12)包括第一级联电路、第二级联电路、储能器和均压电阻。与储能器并联连接的第一级联电路(100)，为6个功率半导体单元组成的三相桥式电路，第一级联电路具有交流电压接线端子(L1，L2，L3)；所述均压电阻并联于储能器两端；与储能器并联的第二级联电路(200)由第一半导体单元(9)、第二半导体单元(10)和机械开关(11)组成，通过接线端子X1和X2输出，所述机械开关(11)并联于直流接线端子X1和X2两端，可以通过合闸控制将接线端子X1和X2短路。本发明构造的换流器子模块，可以实现换流器的冗余运行，提高其运行的可靠性。
摘要（英）：

The invention relates to a converter sub module unit which forms an AC/DC converter. A converter sub module (12) comprises a first cascade circuit, a second cascade circuit, a power accumulator and a voltage-sharing resistor. The first cascade circuit (100) which is in parallel connection with the power accumulator is a three-phase bridge circuit formed by 6 power semiconductor units. The first cascade circuit (100) has AC voltage wiring terminals (L1, L2 and L3). The voltage-sharing resistor is in parallel connection to two ends of the power accumulator. The second cascade circuit (200) which is in parallel connection with the power accumulator is formed by a first semiconductor unit (9), a second semiconductor unit (10) and a mechanical switch (11). Wiring terminals X1 and X2 are used as output, the mechanical switch (11) is in parallel connection with two ends of the DC wiring terminal X1 and X2, and the wiring terminal X1 and X2 are in short circuit through closing control. According to the converter sub module constructed by the invention, the redundant operation of the converter can be realized, and the reliability of the operation of the converter is improved.

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