Design of a Novel Optimal Control Energy Management Strategy for Stand Alone Hybrid Solar-Wind System

Energy is pivotal for the economic progress and societal advancement of any nation. To minimize reliance on imported fuels and address the increasing gap between energy demand and supply, it is imperative to optimize indigenous energy resources, while considering economic, environmental, and social constraints. The surge in population has exacerbated the energy crisis, widening the disparity between demand and supply. Depletion of conventional energy sources has led to an energy supply shortfall. While renewable energy sources (RES) offer promise in the energy sector, their standalone operation is hindered by their intermittent nature, resulting in interruptions in power supply to loads. To ensure stable and reliable power supply, hybrid combinations of renewable energy sources have been adopted. The design of a hybrid wind-solar Photovoltaic (SPV) system for power generation, targeting domestic households in remote areas disconnected from the grid, has been proposed. Such hybrid systems operate either in isolated mode or in grid-connected mode via power electronics interfaces, augmenting reliability and ensuring continuous power supply. Introducing a Hybrid Renewable Energy System (HRES) aims to enhance the productivity and operability of individual renewable energy systems. Extensive technological investigations have explored various approaches, including linear programming and a novel optimum control strategy incorporating PID controllers, fuzzy logic controllers, AI, and optimal torque with Maximum Power Point Tracking (MPPT) techniques. The developed novel optimum control strategy facilitates the coordinated operation of diverse devices and power interface circuitries, with the primary objective of ensuring continuous power supply. Simulation studies have evaluated system performance under different scenarios, including varying solar radiation, temperature, air conditions, and battery charge/discharge conditions. Results indicate variable power generation and affirm the efficacy of the integrated system and control strategies in real-time installations. The investigation reveals that the developed novel optimum control strategy significantly enhances the performance of standalone hybrid wind-SPV systems. The hybrid system, when integrated with controllers, exhibits improved output power and ensures continuous power delivery, thereby enhancing overall system efficiency and reliability. Such systems are indispensable in isolated regions where grid connectivity is unavailable, ensuring secure power generation by intelligently harnessing diverse energy sources.