This thesis proposed a soft-switched three-port bidirectional DC-DC converter for managing the power flow of a photovoltaic (PV) and battery system. The proposed converter consists of three ports connected to a PV panel, battery, and load. These three ports are interfaced through the high-frequency transformer and use phase-shift control to achieve soft-switching for all converter switches. Compared with the traditional multiport converters, the proposed three-port converter uses the least number of power switches, and zero-voltage switching (ZVS). Simulation and experimental results validate the design and effectiveness of soft switching and power flow control. The converter can work in different scenarios regardless of the availability of renewable energy and the battery's state of charge. In addition, maximum power point tracking (MPPT) for renewable energy sources can be achieved for the renewable energy source while managing the power flow between three ports.
Date of Degree
Master of Science (MS)
Program of Study
Electrical and Computer Engineering and Technology
Science, Engineering and Technology
Dosa, M. (2022). A soft-switched three-port DC-DC converter for a PV/ battery system [Master’s thesis, Minnesota State University, Mankato]. Cornerstone: A Collection of Scholarly and Creative Works for Minnesota State University, Mankato. https://cornerstone.lib.mnsu.edu/etds/1263
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