Abstract
This paper presents an efficient five level H-bridge CMLI (Cascaded Multilevel Inverter) topology for PV systems. At first maximum power from solar PV (photo voltaic) array is extracted by providing controlled duty cycle to DC-DC boost converter. Control of Duty cycle is done using P&O (Perturb and Observe) type MPPT (Maximum Power Point Tracking) algorithm. After that control switching pulses are applied to five-level CMLI for conversion of DC voltage into AC. Complete details of switching sequence of cascaded multilevel inverter and working parameters for PV array is presented in this paper. Simulation results of voltage and current waveform of PV array, stabilized output of MPPT and of CMLI is also shown.
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