Modeling and simulation of the dynamic control of a cascaded multilevel inverter using single DC source for induction motor drive application

Abstract

A new type of cascaded multilevel inverter with single DC source presents particular advantages in high power quality and high reliability motor drive applications, and therefore suitable for Navy ship propulsion systems. Control of the dynamics of this type of inverter is important since the charge/discharge state of the capacitors and the modulation index vary with time. This paper presents an algorithm for the dynamic control of this inverter topology. In order to analyze and verify the proposed control algorithm, PSIM is integrated with MATLAB/Simulink to formulate a detail system simulation platform. Simulation results are presented to verify the proposed method.