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Configuration Method for Redundant Sub-modules of Modular Multi-level Converter

[ Vol. 11 , Issue. 4 ]

Author(s):

Guojun Tan, Zecheng Li* and Tao Han   Pages 510 - 517 ( 8 )

Abstract:


Background: In this paper, we propose a redundancy configuration method for Modular Multi-level Converters (MMCs), to improve system reliability and sub-module efficiency, and for maximizing the redundant sub-module value rate.

Methods: We establish a set of objective functions using these aims, to obtain the optimal number of redundant sub-modules. To aid in the evaluation of the configuration method, we analyzed the MMC topology and the operational principle of the sub-modules. We present concrete steps for module redundancy optimization based on the redundant protection scheme used with the MMC.

Result: The results of simulations modelling the operation of the configuration algorithm prove that the number of redundant sub-modules can be effectively allocated using the proposed method while ensuring the reliable operation of the system.

Keywords:

Configuration, Modular Multilevel Converter (MMC), redundant sub-modules, MMC system, IGBT input, calculation method.

Affiliation:

School of Mechanical Electronic and Information Engineering, China University of Mining and Technology, Beijing 100083, School of Mechanical Electronic and Information Engineering, China University of Mining and Technology, Beijing 100083, School of Electrical and Power Engineering, China University of Mining and Technology, Xuzhou 221116

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