Solar Photovoltaic Power Conversion Using Modular Multilevel Converter
Single phase grid connected photovoltaic system using Modular Multilevel Converter (MMC) for power
conversion is presented in this paper. Designing efficient Photovoltaic systems heavily emphasizes to track the maximum
power operating point makes use of maximum power point tracking (MPPT) technique with MMC as interfacing unit into
the grid is used. Perturb & Observe (P&O) technique algorithm is implemented to regulate the DC link voltage of MMC and
to synchronize the grid utility voltage with the current to attain unity power factor operation. Operation of proposed MMC
topology is verified by the simulation results presented in this paper. The AC output is free from the higher order harmonics
and grid voltage and current are in phase. The validity of recommended system is verified by MATLAB simulation.
Keywords— Modular multilevel converter (MMC), Photovoltaic (PV) array, MPPT, Grid, Total harmonic distortion(THD).