Optimized Z-Source Inverter Control of Hybrid PV/Battery System based on Proportional Resonant Controller

Abstract

This paper presents a control strategy of a Z-source PV/Battery system. The proposed topology is based on photovoltaic generator and battery-based storage system. In order to supply a nonlinear load, a three phase Z-source inverter is inserted. A system model is developed to design the PI and IP controllers of the DC-link. The proportional Resonant controller is also used to ensure a good tracking between the output AC voltage and its desired sinusoidal reference, and reduce the lower harmonics caused by the nonlinear load. The set of the control parameters is optimized by using the well-known Particle Swarm optimizer (PSO). Simulation results were performed to highlight the performances of the proposed control strategy.