A5051791705- Physics and Engineering Research Articles
- Microgrid Control and Optimization
- Advanced Battery Technologies Research
- Fuel Cells and Related Materials
- Electric Vehicles and Infrastructure
- Electromagnetic Compatibility and Noise Suppression
- Real-time simulation and control systems
- Islanding Detection in Power Systems
- Engineering and Materials Science Studies
- Renewable Energy and Sustainability
- Electric and Hybrid Vehicle Technologies
- Smart Grid Energy Management
- Integrated Energy Systems Optimization
- Power Quality and Harmonics
- Multilevel Inverters and Converters
- Advanced DC-DC Converters
- Electrocatalysts for Energy Conversion
- Electric Motor Design and Analysis
- Wind Turbine Control Systems
- Optimal Power Flow Distribution
- Advanced Aircraft Design and Technologies
- HVDC Systems and Fault Protection
- Power Systems Fault Detection
- Environmental Science and Technology
- Hybrid Renewable Energy Systems
Helmut Schmidt University
2016-2025
Berlin Institute of Health at Charité - Universitätsmedizin Berlin
2025
Hochschule Mittweida
1999-2023
Universität Hamburg
2009-2021
SES (Luxembourg)
2014-2018
Software (Spain)
2010
Deutsche Nationalbibliothek
2005-2010
Hochschule Bremerhaven
2007
Carl von Ossietzky Universität Oldenburg
2007
Linde (United States)
2005
Summary This paper presents initial results available from the European Commission Horizon 2020 5G Public Private Partnership Phase 2 project “SaT5G” (Satellite and Terrestrial Network for 5G). After describing concept, objectives, challenges, research pillars addressed by SaT5G project, this elaborates on selected use cases scenarios satellite communications positioning in usage scenario of enhanced mobile broadband.
The evolving technologies regarding Unmanned Aerial Vehicles (UAVs) have led to their extended applicability in diverse domains, including surveillance, commerce, military, and smart electric grid monitoring. Modern UAV avionics enable precise aircraft operations through autonomous navigation, obstacle identification, collision prevention. structures of are generally complex, thorough hierarchies intricate connections exist between. For a comprehensive understanding design, this paper aims...
Abstract Inkjet 3D printing is a fast, reliable and noncontact method, capable of producing small large structures enabling multi‐material printing. These characteristics make inkjet an excellent technique for additive manufacturing biomaterials, such as scaffolds tissue engineering. However, the technology restricted by limited number suitable photopolymers which hitherto are to acrylate‐based chemistries, not only toxic but nondegradable, thus use in many biomaterials‐based applications....
The city of Hamburg has decided to electrify its bus fleets. two public transportation companies in this expect operate up 1500 buses by 2030. In order accomplish ambitious goal, both need build an appropriate charging infrastructure. They have implement the centralized depot concept. Buses can therefore charge only at and do not possibility for opportunity intermediate stations. load profile such a is highly dependent on schedule buses. Without intelligent scheduling system, demand as soon...
This paper deals with an integration of High Voltage DC (HVDC <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sup> ) in the onboard power supply system. Conventional aircraft grids have a main voltage 115 V AC (star voltage) variable frequency 360...800 Hz. Newer try to integrate 230 generators grid save cable weight. With "More Electric Aircraft"- concept HVDC could be integrated future airplanes. In all concepts airport infrastructure has...
In new aircraft architectures the electrical power is in perpetual growth, because present hydraulic and pneumatic systems are being eliminated replace by systems. Therefore increase of has to be managed. With constantly increasing demand onboard aircraft, voltage levels actually alluded, order respond these challenges. Many advantages high alternating current (HVAC) direct (HVDC) system (EPS), compliance with aviation's jargon, namely 230V AC constant or variable frequency +/- 270V DC (or...
In the future, provision of ancillary services in low-voltage grids will become more and important. Low-voltage ride-through capability has been a requirement medium- high-voltage but mandatory even grids. There may be conflicts with existing requirements such as anti-islanding detection. This paper proposes method that allows for both protection to implemented simultaneously three-phase inverters connected uses constant voltage frequency monitoring reacts according relevant specific...
The spindle of the colonial diatom Fragilaria contains two distinct sets microtubules (MTs): (a) MTs comprising central spindle, which is composed half-spindles interdigitated to form a region "overlap"; (b) radiate laterally from poles. spindles 28 cells are reconstructed by tracking each MT through consecutive serial sections. Because colonies flat ribbons contiguous (clones), it possible, using single cells, compare at different mitotic stages with minimal intercellular variability. From...
Due to increasing decentralized power applications, electronics are gaining importance, also in distribution grids. Since their scope of investigation is diverse, versatile models and use grid calculations important. In this work, a three-phase grid-synchronous inverter with an LCL filter considered. It defined as component the "Extended Node Method" make it applicable node-based transient calculation method. Because stucture always looks same construction system equations follows same,...
The microgrid concept offers high flexibility and resilience due to the possibility of switching between grid-connected stand-alone operation. This renders microgrids an auspicious solution for rural areas critical infrastructure. In standalone or islanded mode, main objective is cost minimization while ensuring a safe reliable Optimal operation schemes usually assume fixed power limits energy storage units. This, however, not sufficient lithiumion systems, which often come with dynamic that...
The power quality in electrical grids is increasingly influenced by generators and loads with electronic grid coupling. Even comparatively small harmonic currents caused these units can lead to unacceptable high voltage harmonics at the point of common coupling (PCC) due highly resistive resonance points impedance. Therefore, effective perturbation defined frequency dependent impedance PCC. In this contribution an approach presented analyzed measure time measured important parameter for...
Route scheduling is crucial for uninterrupted operation of modern bus fleets consisting electric buses. This paper proposes an exact route optimization model centralized depots based on mixed integer linear programming. In order to adjust the current situation at many depots, considers a heterogeneous fleet multiple types buses with different battery capacities. With additional charging can minimize number simultaneously which directly leads load peak reduction. allows considering further...
This paper deals with an onboard power supply of +/- 270 V DC (HVDC, high voltage DC). Conventional aircraft grids have a main level 115 AC variable frequency 360...800 Hz. In the future, fuel cells might replace conventional auxiliary unit (APU) to optimize eco efficiency. With that technology HVDC-grids can be integrated in aircraft. Changing HVDC-grid has lot advantages. Higher means lower cable weight. Furthermore, electrical converter architecture optimized. Especially converters inside...
The reduction of greenhouse gas and pollutant emissions is a major issue in modern society. Therefore, environmentally friendly technologies like fuel cells should replace conventional energy generation plants. Today, are used households for CHP (combined heat power) applications, emergency power supply many stationary applications the cars, buses ships aircrafts. A significant challenge optimal electrical grid integration selection appropriate protection mechanism cell applications. For...
This paper aims to design the fundamental basis for an Unmanned Aerial System (UAS)-driven, remote, and non-invasive current sensing application. Using COMSOL software, methodology presented here consists of Computer Aided Design (CAD) stranded Transmission Line (TL) geometries composed 7 91 sub-filaments discretized via tetrahedral-element-based meshes. The radiated Magnetic Field (MF) around each TL is then solved by means Finite Element Analysis (FEA) after selecting proper materials TLs...