MATLAB Simulation of Nine Level Modular Multilevel Inverter for HVDC Applications

Power inverters is used to convert DC to AC and helps in providing AC output at any desired level using appropriate switching and control startegy. Multilevel converters help in providing AC output at any desired level by taking lower level DC input voltages of switches. Multilevel inverters are finding their prominence and applications in various fields nowadays to create a smoother stepped output waveform a multilevel inverter is convenient to use. If the voltage level is increased, the waveform becomes smoother. Due to industrial applications, growing day-by-day, for medium and high voltage applications, modular multilevel converter (MMC) is more relevant. In this paper, nine level modular multilevel inverter is implemented in MATLAB/Simulink. The inverter presented in the paper gives nine level output voltage. The complete circuit is simulated in MATLAB/Simulink and the outcomes for the same is presented in the paper.