Abstract
In this paper, a new multi-port DC-DC power converter used to deal with the intermittent nature and slow response in renewable energy applications is proposed. The proposed converter integrates a DC-DC converter and a DC-AC inverter, and the proposed circuit integrates various renewable energy sources in addition to the energy storage unit. By combining renewable energy sources with a statistical trend to offset each other, the impact of the intermittency can be considerably minimized. This combination increases the overall system reliability and usability. Moreover, integrating such systems with energy storage systems can overcome the slow response issue of renewable sources. It can provide the additional energy required by the load or absorb the extra energy provided by the power sources, which greatly improves the dynamics of the overall system. The proposed converter can reduce the system cost and size and improve the efficiency and reliability. The operation principle is studied in detail, and the design considerations are provided. The proposed architecture and its control strategy were analyzed and studied using the Simulink/MATLAB environment. Finally, the feasibility of the proper operation of the studied converter was experimentally verified based on the results of experimental studies conducted on a 300 W prototype implemented in a laboratory.
Highlights
Solar energy, wind energy, and tidal and biomass energy, as the main forms of clean energy technologies, have become the true solution to the recent energy crisis worldwide
There has been a large focus on developing renewable energy applications
While significant improvements have been made in renewable energy applications, there are some essential limitations in these applications
Summary
Wind energy, and tidal and biomass energy, as the main forms of clean energy technologies, have become the true solution to the recent energy crisis worldwide. Solar/fuel cell/wind hybrid generation systems have a higher obtainability to supply continuous electrical energy than any other single source. Hybrid distributed generation systems (HDGs) are a good solution for regions with traditional energy shortages aiming to adopt solar/fuel cell/wind energy in DG systems, which take advantage of both DG systems and renewable energy systems. To install such a hybrid renewable energy system, a two-input single-output scheme has been developed in several studies [4,5]. The advantages of this technique include a harmonic reduction among the cells and a higher
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