Abstract
In this paper, new methods for increasing the efficiency of photovoltaic pumping systems are presented (PVPS). A feasible implementation of battery-free PVPS, as well as a cost-effective design, has been proposed. The variation of the PV power causes its behaviour to transit permanently between the characteristics of constant current sources and constant voltage sources, which is studied in this paper from a new perspective. The inconsistency of PV generator behaviour reveals an unexpected phenomenon in the operation of induction motors (IM). To overcome the effects of fluctuating PV behaviour on IM operation, a modified fractional order MPPT controller (FO-MPPT) has been proposed. FO-MPPT has improved as a result of the use of several metaheuristics approaches, including the Grey Wolf (GWO), Anti-lion (ALO), and Whale Optimizer (WOA). A comparison of the proposed FO-MPPT and conventional MPPT techniques is carried out. The steady-state power, rise time, and efficiency are used as three measures to demonstrate the reliability of the proposed controller, demonstrating that the FO-MPPT outperforms traditional MPPT techniques. The optimal FO-ability MPPT’s to regulate nonlinear and unpredictable dynamic loads is demonstrated.
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