Performance comparison among boost and multi level boost converters for photovoltaic grid connected system using finite set model predictive control

This paper presents a comparative study between two step-up converters based topologies, the Boost and the Multi-Level Boost (MLB) for photovoltaic (PV) energy applications. A novel Finite Set Model Predictive Control FS-MPC strategy is presented to control the cascaded chopper-inverter as a matrix converter. The maximum power point tracking MPPT control is also directly included in the proposed predictive control, so the global control system is significantly reduced. The comparison includes several performance criteria for both converters under sudden variation of solar radiation. Simulation results show the performance of the two used topologies.