Research on High-voltage Large-capacity Modular Multilevel Converter (MMC) System
Modular multilevel converter (MMC) is a newly introduced topology of multilevel converter with six arms, each of which is formed by a series connection of several chopper-cells and an inductor. This paper first analyzes the topology and working principle of high-voltage large-capacity MMC. Then, a novel control strategy and its system solution are proposed and explained in details, including staircase modulation and control methods on chopper-cells, and two controls on capacitor voltage, which are average balancing and arm-balancing. Based on PSIM, a system simulation platform of 100-level megawatt MMC with 110KV is established, achieving the co-simulation of its topology and control strategy. The validity of the topology as well as the control strategy proposed in this paper is confirmed by the simulation.
Multilevel converter capacitor-voltage balancing SPWM PSIM
Jianfei Zhao Chun Gao Kai Cao Xingwu Yang Wenzhe Mao Jianguo Jiang
Key Laboratory of Control of Power Transmission and Conversion, Ministry of EducationShanghai Jiao T Key Laboratory of Control of Power Transmission and Conversion, Ministry of Education Shanghai Jiao
国际会议
三亚
英文
1470-1474
2012-01-06（万方平台首次上网日期，不代表论文的发表时间）