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Title:Dual active bridge DC-DC converter in photovoltaic applications
Author(s):Gonzalez Ortega, Alberto
Contributor(s):Banerjee, Arijit
Subject(s):Dual active bridge
Abstract:This thesis explores the dual active bridge (DAB) topology and implements it on a bi-directional DC-DC converter. The application is intended for the connection in parallel of an energy storage device, such as a battery, with photovoltaic (PV) cells, and then in series to the grid through another converter, but this time a DC-AC. The DAB topology will be implemented in the interconnection of a battery to the high voltage DC bus, with the intention of, through a control scheme that may be designed afterwards, supplying the correct amount of energy when the PV cells cannot provide a steady power output, like for example in the case of cloud appearance and, therefore, a decrease in the insolation levels. A detailed study of the topology was made in order to choose the components for the converter. In addition, zero voltage switching (ZVS) techniques have been implemented to improve the efficiency. The project was designed as a proof of concept, thereby limiting the power output to safe values for the laboratory. For that reason, some issues have arisen in terms of the components choices, leaving us with a transformer that is hard to build for the desired specifications. Hence, future work includes the design of the control scheme as well as the realization of the transformer for a later construction.
Issue Date:2018-05
Date Available in IDEALS:2018-05-23

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