Multi-carrier pulse width modulation for multimodular matrix converter

This paper presents multi-carrier based pulse width modulation scheme for multimodular matrix converter (MMMC). Presented work proves full bridge indirect matrix converter (FIMC) topology as the subset of 3 × 1 modular (MMMC) and thereby any modulation scheme suitable for FIMC topology can be reproduced for MMMC topologies. First the functional similarity between FIMC topology and fundamental MMMC topology is proved. Using this similarity the modulation scheme is derived for fundamental MMMC topology from the one which is suitable for FIMC topology. Well known multi-carrier modulation method, phase shifted (PS) method, is utilized to extend this scheme to 3 × N modular MCs (MMMC) which equally distributes the power among all power modules of the converter. Modulation scheme is verified by simulation in PSIM software and is analyzed based on output voltage magnitude, frequency and input current THD.