Das Projekt "Komponenten fuer modulare Anlagen zur Energieerzeugung aus erneuerbaren Quellen" wird vom Umweltbundesamt gefördert und von Gesamthochschule Kassel, Institut für Solare Energieversorgungstechnik, Standort Kassel durchgeführt. General Information/Objectives of the project: The main objective of the project is to improve the flexibility and reliability of modularly structured hybrid supply systems, thus paving the way for standard design of hybrid systems. In this way the introduction of hybrid systems for remote areas in Europe and developing countries will be accelerated. Power supply systems for three-phase local-grid electrification for supplying power to different locally dispersed consumers within a restricted area will be investigated. The power range concerned stretches from a few kW up to several 10 kW, which represent an important application potential world-wide. Technical approach: In order to create reliable power supply systems existing components will be improved and a suitable communication interface will be designed. The improvements concern: - power supply components (diesel, PV-inverter, battery inverter), - operational control schemes for grid formation and supervision focusing on energy management for grid optimisation and - communication techniques. Utility-grid compatible control schemes which make use of rotating machines in the system like diesel generator sets or rotating-mass storage units will be investigated. The project will focus on systems that contain PV, battery and diesel aggregates. For these systems an operational control and monitoring technology will be developed. In order to verify the results by testing the components in operation an AC-coupled modular RE system consisting of modular components will be set up and operated on the Greek Island Kythnos. Expected achievements and exploitation: At the systems level these improvements are a step to create a family of modular, utility-grid compatible RE-components and systems. This will result in - simplified system design, - systems, consisting of components from different manufacturers - series production of components, - cost effectiveness of systems and - simplified maintenance of the power supply systems.