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Output Feedback Adaptive Control Strategy of the Boost Inverter

In this work, the focus is put on the issue of controlling a single-phase single stage Boost Inverter by an output feedback adaptive control. The main goal of this study is to provide a sinusoidal output voltage which follows tightly the desired reference. The considered control problem is permeated by many difficulties in terms of: (i) The nonlinearity of the studied circuit topology; (ii) The presence of the phenomenon of non-minimum phase makes the system difficult to control; (iii) Inaccessibility to measurements of all currents; (iiii) Unknown load. The issue is dealt using an indirect output voltage regulation: (i) An inner loop is designed using output feedback adaptive control based on the observer with a view to estimating the state variables (Currents); (ii) An outer loop regulates the output voltage to track its reference. The simulation outcomes have been corroborated within Matlab/Simulink/Simpowersystems, which demonstrate that the suggested controller achieves the desired aim.