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Now showing items 201-210 of 221
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Auswirkungen hoher erneuerbarer Energieanteile auf städtische Stromnetze unter Berücksichtigung der Fernwärmeinfrastruktur
(kassel university press, 2021)
Die Energie-, Wärme- und Verkehrswende kann eine Herausforderung für die städtische Netzinfrastruktur werden.
Um die Auswirkungen vor allem auf die Niederspannungsnetze in städtischem und stadtnahem Umfeld beurteilen zu können, wird in dieser Dissertation die Auswirkung einer vollumfassenden Energiewende aufgezeigt. Die ausgesuchten Niederspannungsnetze sind als typische Netze in der Region Köln zu betrachten. In einem ersten Schritt wird davon ausgegangen, dass in den zu untersuchenden Niederspannungsnetzen alle ...
Buch
Fast Online Control based on Homotopies for Systems subject to Time-Varying Constraints
(kassel university press, 2020)
The integration of intelligent, autonomously acting systems into modern society is a rapidly growing field. After robots are established for simple, recurring processes in industry and everyday life, more complex tasks are of interest which require the systems to consider the environment in their decision making process. In the future, intelligent systems will get access to fields like autonomous driving cars, unmanned aerial vehicle (UAV), manufacturing processes, household, or the assistance to people in need of ...
Buch
Performance Assessment of Residential PV Battery Systems
(kassel university press, 2021)
Declining costs for high-performance batteries are leading to worldwide increased use of storage systems in residential building. Especially in conjunction with reduced photovoltaic (PV) feed-in tariffs, a large market has developed in Germany for PV battery systems to increase self-sufficiency. Presently, more than 120,000 PV battery systems are operating in German households. They differ significantly in the type of coupling between PV and battery, the nominal capacities of their components, and their degree of ...
Buch
A novel evaluation framework for energy losses in low voltage distribution grids
(kassel university press, 2020)
Decentralization of energy generation in power distribution systems is recognized as an important development strategy to incorporate more small-scale renewable sources, reduce greenhouse gas emissions and increase energy efficiency. Beside integrating more decentralized generators into existing systems, an efficient system operation is equally important to achieve an overall sustainable energy system. In order to keep track of upcoming changes regarding system efficiency, an accurate determination of energy losses ...
Buch
Cooperative intention detection using machine learning. Advanced cyclist protection in the context of automated driving
(kassel university press, 2021)
Cyclists will play an essential role in future traffic. It is crucial to detect cyclists and predict their intentions to avoid accidents and achieve a highly efficient traffic flow. Vehicles equipped with sensors, data processing systems, and communication abilities acquire and maintain a local model of their surrounding traffic environment, e.g., crossing cyclists. Cooperating and interacting vehicles, roadside units, and cyclists equipped with smart devices and other body-worn sensors exchange information.They form ...
Buch
Bausteine einer wertschätzenden Schulkultur
(kassel university press, 2020)
Die vorliegende Arbeit setzt sich am Beispiel der Georg-Christoph-Lichtenberg-Gesamtschule Göttingen tiefergehend mit dem Begriff der „Wertschätzung“ und der möglichen Wirkungsweise eines wertschätzenden Verhaltens auseinander. Ziel dieser Arbeit ist es gewesen, die wichtigsten Bausteine einer wertschätzenden Schulkultur herauszuarbeiten und zu definieren, sie für interessierte Pädagoginnen und Pädagogen zugänglicher zu machen und konkrete Handlungsanweisungen für ein wertschätzendes Miteinander im schulischen Kontext ...
Buch
Multi-Year Time-Series-Based power system planning with hybrid optimization and supervised learning methods
(kassel university press, 2021)
The increasing share of renewable energy sources (RES) in the power system necessitates new planning methods for power systems systems. On the one hand, flexible operational measures must be included in planning. On the other hand, conventional measures have to be considered. An integrated optimization of both measures is needed. This integrated optimization requires time series simulations of the power system in comparison to traditional worst case planning approaches.
The high voltage (HV) level has the highest ...
Buch
Optimizing Control of Distributed Cyber-Physical Systems
(kassel university press, 2021)
In this thesis, a set of modeling and control strategies are proposed for Cyber-physical systems (CPS), which aim at ensuring a safe, reliable, and highly performant operation of each local subsystem contained in the CPS. Modeling of CPS is challenging since not only must the tight interconnection of continuous and discrete dynamics of local subsystems be exactly represented, but so must also the interleaving structure between different subsystems. Optimal control of CPS, accordingly, should take into account not ...
Buch
Untersuchungen zum Einsatz leistungselektronischer Spannungsregler in Niederspannungsverteilnetzen mit hohem Anteil dezentraler Erzeugungsanlagen
(kassel university press, 2020)
Die steigende Stromerzeugung aus erneuerbaren Energien stellt das elektrische Energieversorgungssystem vor neue Herausforderungen. Für Verteilnetze mit zunehmender Durchdringung mit dezentralen Erzeugungsanlagen sind besonders Maßnahmen zur Spannungshaltung relevant. Systemkonzepte zur aktiven Spannungsregelung stellen hierbei Alternativen zu konventionellen Netzverstärkungsmaßnahmen dar. In dieser Arbeit wird daher der Einsatz von leistungselektronischen Spannungsreglern in aktiven Niederspannungsverteilnetzen ...
Buch
Design and Modeling of Semiconductor Terahertz and Infrared Sensing Structures for Protein Characterization
(kassel university press, 2020)
The subject area of biological sensing becomes progressively more attractive for medicine and fundamental biological research. In these fields, the investigation of characteristic fingerprints of membrane proteins is important, as they are responsible for the communication and activity of biological cells. Moreover, these complex structures are essential for the transport of various substances into the cell and are suitable as a drug target. These kinds of proteins provide vibrational resonances between 200GHz and 2 ...