Abstract：Multilevel is a key technology to high power converters. Limited by the technical problems such as DC voltage unbalance and bus bar design, only the NPC three-level is widely used in industry for neutral point clamped multilevel topology. The hybrid clamped five-level is a novel topology in which DC voltage can be self-balanced. To promote this topology’s application, engineering design for structure and bus bar of a 1.2MV·A converter module is discussed in this paper. The mechanism and limitation methods of the surge current in this topology are first studied. Then the structure and layout design are carried out following the principle that surge current is easy to restrain and bus bar is easy to design. Finally the laminated bus bar is presented and simulated through Ansoft Q3D, and the 400 kW one phase prototype is completed. Consequently, the experimental results have verified the structure and bus bar.
董玉斐, 罗皓泽, 杨贺雅, 何原明, 李武华, 何湘宁. 1.2MV·A混合钳位五电平变流模块的结构布局优化和叠层母排设计[J]. 电工技术学报, 2016, 31(8): 11-18.
Dong Yufei, Luo Haoze, Yang Heya, He Yuanming, Li Wuhua, He Xiangning. Engineering Design for Structure and Bus Bar of 1.2MV·A Hybrid Clamped Five-Level Converter Module. Transactions of China Electrotechnical Society, 2016, 31(8): 11-18.
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