Abstract

A DC-DC converter combined with dual input, dual boost at the input, integrated voltage multiplier cell (VMC) and larger duty cycles is needed to easily achieve a high voltage gain from the independent renewable energy resources (RES) which may be two solar photovoltaic (PV) energy sources. During load changes and input disturbances, the output voltage is to be regulated, which requires suitable control design. This paper presents the procedure for control design of the converter from its small signal transfer function model. The uncontrolled system is characterised by right-half s-plane zero (RHPZ) in the control to output voltage transfer functions and its performance is analysed. A dual loop control strategy employing PI with compensator is adopted and simulated using MATLAB. The results ensure the voltage regulation and active current sharing among the two DC sources.

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