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"This time, the presentations of the workshop focused on the four subjects :- Challenges in conclusive, realistic and system oriented materials testing- Materials challenges for water supply- Materials challenges in the extraction and recovery of scarce elements and minerals- Materials challenges for nuclear fission and fusion.This book comprises the peer-reviewed contributions during the 2nd International Workshop for Young Materials Scientists at BAM Federal Institute for Materials Research and Testing, Berlin, Germany."

"Renewable energy resources are increasingly being used to cover the demand in the electricity grids in many countries. A question that is currently for most grids rather theoretical, although interesting in introducing a long-term perspective, pertains to what an energy supply from exclusively renewable energy resources could look like. This question has to be answered individually for each grid. The objective of the present paper is to scrutinize the specific challenges that a 100% renewable energy scenario brings for the Java-Bali grid. This objective is achieved by designing power generation time series such that they match a given load time series. An important challenge for a 100% renewable energy supply is the very high dependency on solar energy, which generates an enormous primary power generation fluctuation on both a daily and an annual timescale. In particular the seasonal fluctuations come along with high storage demand, which is the greatest challenge involved in a 100% renewable energy supply. There are strategies that may be used to considerably reduce the storage demand: the installed photovoltaic (PV) capacity can be increased, bioenergy can be used for seasonal balancing, and special long-term storage can be added. These options are considered in the present paper."

"Sistem kelistrikan rumah tangga off-grid terus mengalami perkembangan. Dengan berkembangnya teknologi energi terbarukan, teknologi komputasi, teknologi informasi dan teknologi komunikasi, fungsi dan peran sistem kelistrikan rumah tangga dalam menurunkan emisi gas buang dan meningkatkan efisiensi semakin penting. Untuk merancang sistem kelistrikan rumah tangga diperlukan suatu alat. Saat ini pemodelan dan simulasi menjadi alat yang efektif untuk mendapatkan rancangan sistem yang diinginkan. Dalam penelitian ini, dirancang pemodelan dan simulasi sistem kelistrikan rumah tangga. Sistem ini terdiri dari panel surya, turbin angin, baterai dan beban yang terkoneksi melalui konverter. Pemodelan diturunkan dari model matematik sistem sedangkan simulasi menggunakan MATLAB/Simulink. Dalam penelitian ini, rancangan sistem kendali supervisi juga diimplementasikan. Kendali ini berfungsi menyeimbangkan antara pasokan energi dan beban yang terus berubah. Dari hasil simulasi yang dilakukan didapatkan bahwa model dan simulasi dapat bekerja dengan baik. Perubahan beban dan pasokan energi dapat diantisipasi dengan bekerjanya baterai dan juga fuel cell.

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The off-grid household electrical system continues to develop. With the development of renewable energy technology, computational technology, information technology and communication technology, the function and role of off-grid household electrical systems in reducing exhaust emissions and increasing efficiency are increasingly important. To design an off-grid household electrical system, a tool is needed. Currently modeling and simulation are effective tools to get the desired system design.

In this study, a household electrical system modeling and simulation was designed. This system consists of solar panels, wind turbines, fuel cells, batteries and loads connected through a converter. Modeling is derived from system mathematical models while the simulation uses MATLAB / Simulink. In this study, the design of the supervision control system was also implemented. This control functions to balance the energy supply and the ever-changing burden. From the results of the simulations carried out, it was found that the model and simulation could work well. Changes in load and energy supply can be anticipated by the operation of the battery and also the fuel cell."

"This book investigates the possibilities and limitations of various systems supplying manned bases on Moon with energy and other vital resources. The book collects together recent proposals and innovative options and solutions."