Optimization of DC-DC converters for DC microgrid interfaces

Distributed Energy Resources are key elements in de-centralized power systems. By deploying them close to the consumer
nodes, one can address the increases in power demand while bypassing investment in transmission and distribution systems.
The proposed research work concerns the optimization of DC-DC interfaces for DC microgrids. It will consider different types of
semiconductors (Si, SiC, GaN) of different ratings. This allows the reduction of the switching frequency and consequently power
losses and cooling requirements. The basic bi-directional DC-DC converter (cell) consists of two switching poles, one
intermediate inductor and two filter capacitors. By combining cells in parallel, one can reduce the current ratings of the switching
poles and inductors, while in series, one reduces the voltage ratings of switches and capacitors. In practice, the way the
interfaces are realized have a significant impact on characteristics such as high efficiency and power density with low cost,
volume and weight.

Faculty Supervisor:

Luiz Antonio Correa Lopes

Student:

Partner:

Universidade Federal de Minas Gerais

Discipline:

Engineering

Sector:

Education

University:

Concordia University

Program: