A Hybrid Renewable Energy System (HRES) with a Proportional-Resonant (PR) Controlled Inverter

This paper investigates the effectiveness of Proportional-Resonant (PR) controllers in Hybrid Renewable Energy Systems (HRES), which integrate solar and wind components to optimize energy reliability and efficiency. The study addresses the research question regarding the extent to which PR controllers enhance performance and efficiency in managing power quality, system stability, and frequency-specific control in grid-connected applications. Experimental evaluations further validate that variations in load conditions, such as those from RL loads, have minimal impact on output performance, underscoring the robustness of the PR approach. Additionally, the development and testing of a small-scale hybrid wind-solar microgrid, including tailored power electronic converters, control algorithms, and an energy management system, illustrate the practical applicability of these advanced control strategies in both standalone and dynamic operational environments