Open Battery Platform: Open-Source Power Electronic Devices for Renewable Generation and Energy Storage Technology

The use of renewable energy sources, such as pho-tovoltaic (PV), and energy storages is growing rapidly. This, together with the emerging aspects of new battery technologies and the reuse of batteries from the mobility sector, increases the need for variable integration through power electronic components. Due to its global importance, a comprehensive system is necessary to overcome various challenges, such as the integration of different renewable energy sources, storage technologies and the need for local or grid connections. This paper presents a system concept and demonstrates the practical implementation of a battery storage system in combination with PV and a grid connection. For comparison purposes, a reference system was built using commercially available components, which were gradually replaced. All components were developed under the concept of open-source hardware and software. The monitoring and control of system components, remote monitoring, and reference data collection rely on open-source tools.