<span>This paper proposes an auto-tuning control system to ensure a fast response of the photovoltaic (PV) voltage by reducing the <span>perturbation time of a P&O algorithm. This solution accelerates the tracking of the maximum power point and, at the same time, <span>guarantees the system stability, which increases the amount of energy produced by the PV system. The control system consists of three <span>cascaded controllers: a P&O algorithm dynamically parameterized by the adaptive law in order to guarantee stability; an adaptive <span>PI controller whose parameters are modified by the adaptive law, depending on the operating conditions, to reduce the settling <span>time of the system as much as possible; and a sliding mode current controller to mitigate environmental and load perturbations and <span>ensure global stability. The design of the new control structure is supported by mathematical analyses and validated with simulations <span>performed in PSIM in order to demonstrate the robustness of the proposed solution.</span></span></span></span></span></span></span><br /><br class="Apple-interchange-newline" /></span>