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Low-volume and high-efficiency converter solution for interfacing a Hybrid Energy Storage System (HESS)

When analyzing the characteristics of a Hybrid Energy Storage System in a Ragone plot, it can be seen that the mass of the necessary power electronics has a great influence on the system's performance. Although many coupling architectures have been studied so far, the size of the power converter is not usually a priority. So, in this paper, a low-volume and high-efficiency converter is proposed. Placed in series between the sources, the converter depends only on the voltage difference between them. In this way, the converter can be reduced, since it does not manage the total power supplied by the accumulators, as a classic converter.