A Single Phase Reduced Device Count Multilevel Inverter Topology Using MCPWM for Renewable Energy Systems

In this paper, a new hexagonal switch cell multi level inverter (HSCMLI) is proposed for the PV system which offers reduced number of devices as compared with conventional multi level inverter (MLI) topologies. Thereby, reduces the size and complexity of the overall PV system. For performance analysis of HSCMLI in PV system various constant frequency multi-carrier pulse width modulation (MCPWM) generating methods are proposed to enhance the fundamental root mean square (RMS) voltage, Peak voltage and reduce total harmonic distortion (THD). The proposed strategy can be applied to PV system to effectively reduce the odd harmonics with reduced size and complexity for grid application.