A dual-purpose novel converter for optimized hybrid energy system

Abstract In numerous countries, power shortages have become a significant issue due to the escalating demand for electricity, surpassing the capabilities of traditional energy generation methods. To address this challenge, there is a growing reliance on hybrid energy systems. These systems present a solution by integrating multiple energy sources, effectively meeting the load demand. However, conventional hybrid energy systems typically involve multiple power conversion stages and require multiple power converters, which increase energy losses and reduce overall system efficiency. To address these issues, this paper proposes a novel single-stage dual-source converter for hybrid energy systems. The proposed converter serves a dual purpose by catering to both AC and DC loads. Unlike conventional systems, which require multiple conversion stages, this converter integrates the AC and DC nature of power sources into a single-stage solution. A control switching algorithm is designed to seamlessly switch between power sources enabling the use of either source independently or both simultaneously to ensure an uninterrupted power supply to the load. The proposed converter demonstrates versatility by seamlessly operating on AC source, DC source, or a combination of both. It dynamically adjusts its operating mode in response to fluctuations in power availability. This converter can operate as DC-AC converter, AC-DC converter, and can use AC and DC power directly with the help of a unique waveform. The converter with different operations has been analysed using MATLAB/Simulink software. The proposed converter demonstrated superior performance, achieving impressive THD of just 0.18% when powered solely by AC and 5.71% when powered by a mix of AC and DC. This proposed converter provides a promising approach with the potential to address the evolving needs of modern power systems. The proposed converter is suitable for renewable energy integration and applications in remote areas, where reliable and efficient power supply is critical.