Design and Analysis of Combined Control Strategy for Grid Integrated PV-Hybrid System with Sparrow Search Optimized Seamless Control

The energy storage system (ESS) makes it easier to handle sporadic renewable energy sources (RESs). However, maintaining the power equilibrium between RES, loads, and ESS is crucial and requires effective control. The work presents a combined control method for an AC grid system that is powered by photovoltaics (PV) and battery and supercapacitor (SC) as hybrid energy storage (HES) to balance the power. The control makes use of the battery uncompensated power to boost the performance of the HES system. The PV-HES system makes sure that the critical loads always get power. The proposed approach enables rapid recovery of the DC-link voltage, all the while guaranteeing efficient distribution of power between the battery and the SC. A proportional integral controller that has been fine-tuned using the sparrow search algorithm is employed to manage the DC bus voltage effectively, leading to reduced fluctuations in the dynamic state and enhanced overall system stability. A smooth voltage source converter control is obtained without any major disruption. A range of operational scenarios, encompassing factors like fluctuations in PV generation and load demands, demonstrate the effectiveness of the proposed control strategy compared to conventional control methods. Simulation findings demonstrate that the proposed control maintains system stability under dynamic conditions.