Hybrid MPPT - Simple Boost Control of Z Source Inverter Integrated in Standalone PV Systems
This study gives a hybrid strategy control of standalone system based on Z source inverter and powered by photovoltaic generators and electrochemical batteries. In off grid application, the most challenge is obtain voltage stability with a higher power quality in all really conditions (meteorological conditions, load variations). The Z-source inverter (ZSI) provides an alternative solution for the conventional voltage source inverter (VSI) by eliminating de DC/DC converter, and replace it by LC network design, this solution reduce the switching power number, losses and cost. In this work, a combined P&O MPPT technique and simple boost control strategy will be integrated in the Z sourec inverter to elaborate the shoot through situations. Many simulation results expose clearly in different situations the reliability and the robustness of the proposed control.
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