Journal
2019 INTERNATIONAL CONFERENCE ON ADVANCED ELECTRICAL ENGINEERING (ICAEE)
Volume -, Issue -, Pages -Publisher
IEEE
DOI: 10.1109/icaee47123.2019.9014748
Keywords
Boost converter; backstepping control; robustnes maximum power point tracking (MPPT); photovoltaic chain
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The objective of this work is to integrate the backstepping control for tracking the maximum power point of a photovoltaic (PV) chain. This control strategy is applied for a parallel DC-DC converter (type: boost) in order to regulate the output voltage of the PV generator, according to the reference voltage generated by the known perturb and observe (P&O) MPPT (maximum power point tracking) algorithm. The robust and nonlinear backstepping controller is based on Lyapunov function for ensuring the local stability of the system. The basic idea of the nonlinear backstepping controller (BSC) is to synthesize a control law in a recursive way, that is to say step by step. This controller has a good transition response, a low tracking error, and a very fast response to the changes in solar irradiation and environmental temperature. To prove the effectiveness of the suggested control method, a comparative study through numerical simulations is presented with sliding mode control (SMC) and the classical PI (proportional-integral) controller.
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