@misc{8436, abstract = {{Today DC offers far-reaching advantages over AC. Therefore, many devices have been equipped with an internal DC link for years. In the field of energy supply, the use of DC technology is also growing and is state of the art e.g. in offshore, high-voltage, automotive and data center applications. The spread of industrial open DC grids is currently starting and is completely different due to the requirements: The DC grid itself and energy flows in an industrial environment are highly dynamic and bidirectional. Due to the low impedance electrical connection of the DC links of many devices, stored energies in fault cases as well as ripple currents during operation place particular requirements on the devices.}}, author = {{Puls, Simon and Koch, Jan-Niklas and Ehlich, Martin and Borcherding, Holger}}, booktitle = {{EPE Proceeding 2022}}, isbn = {{978-9-0758-1539-9}}, issn = {{2325-0313}}, keywords = {{Industries, Semiconductor device measurement, Capacitors, Europe, High-voltage techniques, Inverters, Circuit faults}}, location = {{Hannover}}, publisher = {{IEEE}}, title = {{{Particular Requirements on Drive Inverters for Safe and Robust Operation on an Open Industrial DC Grid}}}, year = {{2022}}, } @proceedings{8437, abstract = {{Low voltage direct current microgrids (DC-MG) provide a solution for increased efficiency by the reduction of conversion losses, total reuse of recuperation energy and an increased share of local power generation. Especially industrial applications ask for high uptimes and a stable voltage supply, which are both at stake in a power grid dominated by renewable generation. DC-MGs overcome these drawbacks by balancing energy distribution and power demand locally. For the planning and design of these grids a systemic approach is needed, due to the fact that many components are interacting. The task arises of structuring the knowledge available for individual technologies in an overall design framework. For this purpose, current state-of-the-art design processes are discussed in this article. These processes are mapped into the context of the requirements in an industrial environment. The findings are transferred to the design of industrial DC networks. Finally, a complete design process for DC-MGs is derived, which is proposed as a basis for the development of tools.}}, editor = {{Schaab, Darian and Spanier, Patrick and Ehlich , Martin and Fosselmann, Eric }}, isbn = {{978-1-6654-4042-4}}, keywords = {{Renewable energy sources, Power demand, Process control, Voltage, Robustness, Planning, Stakeholders}}, location = {{ Macau, Macao }}, publisher = {{IEEE}}, title = {{{Design Framework for Multiple Infeed DC-Microgrids in Industrial Applications}}}, doi = {{10.1109/CEECT53198.2021.9672633}}, year = {{2022}}, } @misc{9210, abstract = {{In order to guarantee long lifetime and high performance of electrical contacts, a plating is usually applied on the base material. Silver is a promising plating material because of a good balance between performance and costs. The conventional silver plating is soft; therefore, a thick silver plating should be used to prevent the wear through during the operation. In order to enhance the wear resistance and prolong the lifetime of the silver plating, silver platings are modified by co-depositing nanoparticles with a core/shell structure into the silver matrix. A novel method to prepare the Ag (shell)@Al 2 O 3 (core) nanoparticles by galvanic process is introduced in this paper. The influence of fabrication parameters in the galvanic process such as the concentration of silver nitrate solution and the plating voltage on the silver content in the Ag@Al 2 O 3 nanoparticles is investigated. Afterwards, different concentrations of core/shell nanoparticles are co-deposited into the silver plating to study the effect of nanoparticles on the microhardness, microstructure and the lifetime of the silver plating. As a result, the microhardness and the lifetime of the silver plating are significantly improved and a favorable nanoparticle concentration exists for the longest lifetime. Moreover, the mechanism of the lifetime improvement is determined.}}, author = {{Yuan, Haomiao and Probst, Roman and Song, Jian}}, booktitle = {{Electrical contacts - 2022 : proceedings of the Sixty-Seventh IEEE Holm Conference on Electrical Contacts}}, isbn = {{978-1-6654-5966-2}}, issn = {{978-1-6654-5965-5}}, keywords = {{Nanoparticles, Resistance, Fabrication, Silver, Costs, Contacts, Voltage}}, location = {{ Tampa, FL, USA}}, pages = {{166 -- 173}}, publisher = {{IEEE}}, title = {{{Influence of Core/Shell Nanoparticles on the Fretting Behavior of Electrical Contacts}}}, doi = {{10.1109/HLM54538.2022.9969773}}, year = {{2022}}, } @inproceedings{328, abstract = {{In this paper, concepts for an extended DC network for the main power supply of components from various manufacturers in industrial production are presented. In the first part, detailed requirements for such a network are given from the viewpoint of a customer. Based on those, different concepts for AC/DC conversion and energy management are discussed. As far as AC/DC conversion is concerned, the advantages and drawbacks of several rectifier topologies are listed, as they have a significant impact on the system behavior and EMC properties. An intelligent energy management can improve the energy efficiency and reduce downtimes of a plant, which are major requirements from a customer’s viewpoint. }}, author = {{Borcherding, Holger and Austermann, Johann and Kuhlmann, Timm and Weis, Benno and Leonide, Andre}}, booktitle = {{2017 IEEE Second International Conference on DC Microgrids (ICDCM)}}, keywords = {{AC-DC power convertors, electromagnetic compatibility, energy conservation, energy management systems, rectifiers, main power supply, industrial production, DC network, AC-DC conversion, rectifier topologies, EMC properties, intelligent energy management, energy efficiency improvement, downtime reduction, Rectifiers, Switches, Voltage control, Topology, Network topology, Production, Grounding, industrial DC grid, SMART Grid}}, location = {{Nürnberg}}, number = {{1}}, pages = {{227--234}}, title = {{{Concepts for a DC Network in Industrial Production}}}, doi = {{10.1109/ICDCM.2017.8001049}}, year = {{2017}}, } @misc{10155, abstract = {{This paper describes a method for automatically obtaining the order and position of contactless connected network participants in a linear physical topology. While the sequence of network devices can be determined with quite simple methods in networks with physical interconnections, these methods can not be applied in contactless networks. This work is based on a linear network topology using a backbone rail, which includes mechanisms for contactless energy and data transmission. The position estimation for each attached network device can be performed by determining a specific physical characteristic, which is altered along the rail extension. The proposed solution uses a capacitive resonant circuit to achieve a position detection.}}, author = {{Wesemann, Derk and Witte, Stefan and Michels, Jan-Stefan}}, booktitle = {{2009 International Conference on Electrical and Electronics Engineering - ELECO 2009}}, isbn = {{978-9944-89-818-8}}, keywords = {{network topology, position measurement, voltage measurement, wireless sensor networks}}, location = {{Bursa, Turkey }}, publisher = {{IEEE}}, title = {{{Position Detection in linear, proximity coupling Networks}}}, doi = {{10.1109/ELECO.2009.5355273}}, year = {{2009}}, }