Implementation of nearest level modulation for Modular Multilevel Converter

摘要

Nowadays there are several modulation techniques to control multilevel power converters. In this paper it's shown an implementation of the nearest level modulation for a six-level modular multilevel converter. The use of this modulation is a very interesting option when the number of submodules is large because of the complex of this modulation is independent of the number of levels. The implementation of the modulation has been made in a real hardware platform designed to control large multilevel converters. Moreover, the modulation has been tested in a high power six-level prototype of Modular Multilevel Converter.