Simulation Modeling of Modular Multilevel Converter

Abstract

From medium to high voltage applications one of the best topologies is the multi-level modular converter. Its output performance and quality depend upon the type of control used. Just like other conventional controls, the controller Nearest Level Modulation (NLM) is used for regulating MMC that generates N+1 output, where for per arm AC output voltage N denotes the number of sub-modules. This research work proposes an improved NLM control technique for the MMC that creates twice the levels compared to the traditional NLM approach.