Strategy
The aim of the NEMOS project is the development of the technology to be ready for the market. This will be done in two main phases: during the first phase, the conceptual engineering, a complete system will be developed and tested in the natural seaways scaled to 1:10. The resulting forecast revenues and cost models allow a detailed examination of the economics of the plant. During the second phase, the detailed design and creation of a market-oriented prototype will be completed. The development work is carried out in cooperation with partner companies in various industries, with the Development Centre for Ship Technology and Transport Systems (DST) and the Institute of Ship Technology, Ocean Engineering and Transport Systems (ISMT) at the University of Duisburg-Essen .
Phase 1: Conceptual Engineering (2012)
In this phase the operational concepts and implementation approaches for the floating body, the foundations , the power train and the connection to the offshore wind power plant will be developed. An electric concept, which includes a system for smoothing the stochastically fluctuating running yield will also be designed during this phase . For dealing with extreme sea conditions appropriate safety and survival strategies will be established. Finally, the overall system will be tested long term in natural sea conditions. The Danish test center "Nissum Bredning" for example allows tests in natural seaways for a wide range of wave conditions. The infrastructure for natural experiments can be rented so that in a scale of 1:10 energy analyses can be examined in detail. After the test all system components are examined for signs of wear. The resulting knowledge can be used for the following detailed development of the plant. Based on the results of this project phase, a cost model for the construction, installation, operation and maintenance is created. As a result the economic viability of the entire system can be evaluated.
Phase 2: Detailed design and prototype (2013/2014)
In this phase, the system parameters are specially adapted to the planned location of the prototype in combination with a wind turbine. For the chosen configuration, a comprehensive design is developed. This relates to the floating body, the power train, the foundations, the generator and the connection to the tower of the wind turbine. A detailed planning of electrical installations and the management of the overall system will also be established during this phase. In addition, an environmental impact assessment will be carried out and certification as well as authorization lawsuits initiated. Based on the obtained design data, the components are manufactured and assembled by external companies. At the proposed site they will be installed and taken into operation.
