Abstract

DC–DC converters are an important element in photovoltaic systems to attain desired level of energy and to shape it according to the demand. This paper proposes new optimized sliding mode controller (SMC) with fixed switching frequency for a boost converter to step up a fluctuating solar panel voltage to a higher constant DC voltage. Based on the converter functioning principle, a sliding mode controller (SMC) is proposed. Then, a method for SMC parameters selection using simplex and PSO techniques is given. The simplex method allows obtaining the admissible ranges for SMC parameters while taking into account practical considerations about the converter. Then, theses ranges will be used by the particle swarm optimization technique (PSO) to find optimal values for controller parameters.

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