A Nearest Level Modulation technique for Modular Multilevel Converter for Fewer Submodule

Abstract

A simpler nearest level control balancing solution for modular multilevel converters is described in this research. The proposed solution does not necessitate individual submodule voltage sorting or switching state redundancy. Once the submodules have been sorted by the number of submodules to be turned on, the submodules can be identified at any time during the method's implementation. In the gate pulse generation stage, the suggested method likewise does not require the individual submodule status. The switching states of the input voltages can be used to build the gate logic in the described technique. This paper mainly based on switching pattern of submodules , and according to the switching pattern submodules produces the scaled output for modular multilevel converter. Model consist of 4 submodule in upper arm and 4 submodule in lower arm which produces the upper and lower arm voltage. And we are getting 5 levels for 4 submodules. For simulation purpose we uses a MATLAB SIMULINK.