Fraunhofer IISB

Matthias Schulz has received a Master of Science in Electrical Engineering, Electronics and Information Technology from Friedrich-Alexander University Erlangen-Nuremberg in 2015. From 2015 until now, he is a member of the group DC microgrids at the Fraunhofer Institute for Integrated Systems and Device Technology (IISB) in Erlangen, Germany. In recent years, the DC Grids working group has focused on the use of direct current technology in commercial and office buildings. This includes the integration of renewable energy generation (e.g. photovoltaics, combined head and power plants) and storage (Lithium-ion batteries, liquid organic hydrogen carriers) as well as power distribution across a broad range of voltage levels for various consumer profiles. In the project DCSmart, supported by the German Federal Ministry for Economic Affairs and Energy, he is responsible for the following developments:

–          Bidirectional electronic safety elements based on semiconductors to limit the fault current in bipolar DC grids. Keywords: Concepts and prototypes, Energy Harvesting, Photovoltaic driver, normally-off and normally-on transistors, overcurrent, short-circuit.

–          Non-isolated DC/DC converter for local management, which connect a regional (±760/700 V) and a local (±380/300 V) bipolar DC grid. The used topology can perform power balancing between the positive and negative pole and thus omitting a second DC/DC-converter for balancing. Keywords: Non-Isolated Three-Port DC/DC converter, bidirectional, power balancing.

–          Implementation of modular concepts and plug & play solutions to use the converter and the safety elements in residential houses, commercial as well as industrial buildings to handle every power requirement.