The Dual Active Bridge (DAB) convert stands out for the application on modern power grids with DC stages. Among DAB advantages, one can cite: it has galvanic isolation between converting input and output; presents high efficiency; enables bidirectional flow; shows density; work as buck or boost. In this paper, initially two mathematical models are discussed: small- signal modeling discrete mode...

In this paper, a two-stage three-port isolated bidirectional DC-DC converter (BDC) for hybrid energy storage system (HESS) applications in DC microgrids is proposed. It has an enlarged zero-voltage-switching (ZVS) region and reduced power circulation loss. A front-end three-phase interleaved BDC is introduced to the supercapacitor (SC) channel to compensate voltage variations of SC. Consequentl...

One option for converting the energy in sea waves into renewable electricity is development of floating wave converters coupled to electrical generators. For this work, bespoke slow-speed machines bidirectional power smoothing electronic are required. This paper reports on successful design and tank validation an electric machine, converter fully controlled direct drive take-off system two smal...

Modern society is unquestionably heavily reliant on supply of electricity. Hence, the power system is one of the important infrastructures for future growth. However, the power system of today was designed for a stable radial flow of electricity from large power plants to the customers and not for the type of changes it is presently being exposed to, like large scale integration of electric veh...

In this paper, a four-port bidirectional dc-dc converter is proposed for grid-interactive photovoltaic (PV) system application. The four-phase topology is suitable for residential pumping, aerospace power requirements. The control of battery and different capacities of PV modules are naturally decoupled. In addition, the port interface with PV is current type which can implement maximum power p...