One-cycle control based maximum power point tracker using constant voltage method for battery charging applications

In recent decades, the use of photovoltaic systems as an alternative source of energy has been widely discussed due to the continuous advance in the study of power electronics as well as the control techniques applied in these systems. Advances in researches on the improvement of these control techniques have been aimed at guaranteeing the quality and reliability of the energy supplied to the loads and storage units, since they can suffer damage due to the voltage variations from transients caused by abrupt solar radiation variations. This paper proposes the use of an OCC controller to perform the maximum power point tracking based on the constant voltage method to allow a safe battery charging. The proposed controller is compared with the traditional Perturb and Observe method in order to show the advantage of the PV panel constant voltage for the batteries charging without the voltage variations caused by the behavior of Perturb and Observe method. In addition, the usage of OCC ensures fast response to transients, close to zero steady-state and excellent rejection to disturbances.