This work depicts modeling and analysis of two-staged power electronic interface used for grid-connected solar photovoltaic generator. The power circuit of power electronic interface comprises of a quadratic boost converter with voltage multiplier cell and \(1-\phi \) voltage source inverter. The said converter provides a higher voltage conversion ratio and lower voltage stress than other converters. The control circuit of the power electronic interface comprises of perturb and observe-based maximum power point tracking scheme with adaptive perturbation. For the dual-loop control for the grid-connected inverter, fractional-order PI controller and variable band hysteresis current controller are used. Small-signal modeling and analysis of converter and inverter configuration are provided in this work. The simulation results and experimental validation of the grid-connected system are provided in this work.
