Modular test facility for an industrial DC voltage network with controlled electrical drives

The Paper presents the concept of an experimental plant, which is to be built within the framework of the research project DC-INDUSTRIE2. This system consists of a multitude of electrical drives, various uni- and bidirectional rectifiers, several decentralized energy suppliers (PV and CHP) and several energy storage units. All devices in this system are coupled via a common DC Grid. DC Grids allow a very simple bidirectional energy exchange between the connected devices. Therefore, braking energy in electric drives, for example, can be used without additional effort and the integration of decentralized energy supplier systems such as photovoltaic (PV) or combined heat and power plants (CHP) as well as energy storage systems is much easier than in AC Grids. Due to these advantages, numerous research projects are currently being carried out on DC Grids. With the experimental plant presented here, the advantages of DC technology can be demonstrated directly, but also more detailed technical issues can be investigated.