Open AccessHybrid MMC Redundancy Configuration Calculation Method Based on Heuristic Algorithm
Author(s) -
Xiaojian Lu,
Zian Zeng,
Xichao Lv,
Xiang Luo,
Gongliao Zhang,
Youping Fan
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2173/1/012077
Subject(s) - insulated gate bipolar transistor , redundancy (engineering) , computer science , heuristic , modular design , converters , matlab , harmony search , algorithm , reliability (semiconductor) , reliability engineering , topology (electrical circuits) , engineering , voltage , power (physics) , electrical engineering , physics , quantum mechanics , artificial intelligence , operating system
Most of the existing redundant configuration methods of modular level converters (MMC) only consider the reliability of the MMC, and rarely consider the utilization of insulated gate bipolar transistors (IGBT). A heuristic algorithm-based calculation method for hybrid MMC redundancy configuration is proposed in order to better meet the engineering practicality. Firstly, the topology of the hybrid MMC is introduced, and the correlation between submodules is introduced into the calculation of its reliability. Secondly, the index of IGBT utilization is proposed to judge the economic advantage. The effects of correlation and service life on the reliability of the hybrid MMC and the IGBT utilization are analyzed. Then, heuristic factors are constructed with reliability and IGBT utilization, and the optimal redundancy configuration scheme of hybrid MMC is obtained by heuristic algorithm. Finally, based on the parameters of Kunliulong multi-terminal hybrid DC transmission project, the calculation is verified in Matlab and compared with the results of the difference method to illustrate the feasibility and superiority of the proposed redundancy configuration calculation method.