@article{WiessmannDresselSchmitt, author = {Wießmann, Harald and Dreßel, Bernd and Schmitt, Maximilian}, title = {Verfahren zur phasenweisen Regelung der Schaltfrequenz bei Einsatz der Hysteresestromregelung SDHC}, series = {Prior art journal}, journal = {Prior art journal}, number = {15}, issn = {2198-4778}, pages = {99 -- 101}, language = {de} } @article{WiessmannDresselSchmitt, author = {Wießmann, Harald and Dreßel, Bernd and Schmitt, Maximilian}, title = {Verfahren f{\"u}r eine Hysteresestromregelung zur aktiven D{\"a}mpfung von Systemschwingungen in Umrichtersystemen}, series = {Prior art journal}, journal = {Prior art journal}, number = {23}, issn = {2198-4778}, pages = {85 -- 89}, language = {de} } @inproceedings{SchmittAckva, author = {Schmitt, Maximilian and Ackva, Ansgar}, title = {Active damping of common-mode oscillations in electric drive systems using direct current control}, series = {Power Electronics and Applications (EPE'17 ECCE Europe), 2017 19th European Conference on}, booktitle = {Power Electronics and Applications (EPE'17 ECCE Europe), 2017 19th European Conference on}, isbn = {978-90-75815-27-6}, doi = {10.23919/EPE17ECCEEurope.2017.8098940}, pages = {1 -- 9}, language = {en} } @inproceedings{SchmittDresselAckva, author = {Schmitt, Maximilian and Dreßel, Bernd and Ackva, Ansgar}, title = {Requirements for current and voltage measurement systems in direct current controlled industrial power inverters}, series = {Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC), 2015 IEEE 13th Brazilian}, booktitle = {Power Electronics Conference and 1st Southern Power Electronics Conference (COBEP/SPEC), 2015 IEEE 13th Brazilian}, isbn = {978-1-4799-8779-5}, doi = {10.1109/COBEP.2015.7420023}, pages = {1 -- 6}, language = {en} } @inproceedings{SchmittAckva, author = {Schmitt, Maximilian and Ackva, Ansgar}, title = {A Novel Control Strategy for Reducing Common-Mode Currents in Bidirectional Drive Systems}, series = {20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)}, booktitle = {20th European Conference on Power Electronics and Applications (EPE'18 ECCE Europe)}, publisher = {IEEE}, isbn = {9781538641453}, pages = {1 -- 9}, language = {en} } @inproceedings{RosiliusWirsingvonEitzenetal., author = {Rosilius, Maximilian and Wirsing, Benedikt and von Eitzen, Ingo and Wilhelm, Markus and Schmitt, Jan and Engelmann, Bastian and Br{\"a}utigam, Volker}, title = {Evaluation of Visual Requirements and Software-Design for Immersive Visibility in Industrial Applications}, series = {2021 IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct)}, booktitle = {2021 IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct)}, pages = {234 -- 239}, abstract = {Currently, many sources predict increasing use of AR technology in the industrial environment. The task of immersive productive assistance systems is to provide information contextually to the industrial user. Therefore, it is essential to explore the factors and effects that influence the visibility and the corresponding quality of this information. Caused by the technical limitations of additive display technology and application conditions, this new approach has evaluated the immersive visibility of Landolt Rings in various greyscales against ambient illuminance levels on different industrial-like surfaces, coupled with and without a white virtual background. For this purpose, an empirical study in a within-subjects-design with full factorial experimental design (n=23) was conducted on Microsoft HoloLens 2 hardware. The mean values of the main effects indicate that visibility is significantly affected by ambient illuminance (best results at lower level), greyscale (best results at middle level) and virtual background (best results with background). In contrast, the choice of surface is shown to have no statistically significant effect on visibility, however it affects the response time. Additionally, cross-interactions of variables were analyzed and lead to a design recommendation for immersive industrial applications.}, language = {en} } @article{FischerRosiliusSchmittetal., author = {Fischer, Sophie and Rosilius, Maximilian and Schmitt, Jan and Br{\"a}utigam, Volker}, title = {A brief review of our agile teaching formats in entrepreneurship education}, series = {Sustainability}, volume = {14}, journal = {Sustainability}, number = {1}, doi = {https://doi.org/10.3390/su14010251}, pages = {251 -- 251}, abstract = {Companies are confronted with increasingly demanding environments, including globalization, technologization, intergenerationality, and crises such as the coronavirus pandemic. To accept uncertainties as a challenge and to recognize opportunities for development, well-educated and resilient founders are needed who can foster innovation and sustainable development within society and the economy. The majority of today's entrepreneurs have an academic background. Hence, institutions for higher education need to provide comprehensive educational offerings and support initiatives to train and sensitize future entrepreneurs. Therefore, since 2013, agile teaching formats have been developed in our project at a Bavarian university of applied sciences. In two stages, we founded a limited company for hands-on experimentation with entrepreneurship and also conceptualized an elective course and an annual founders' night. Based on a theoretical model and continuous teaching evaluations, we adjusted the individual modules to suit the target group. The objective is to promote the acquisition of key competencies and exert a positive influence on the startup quotient in the region. There are six startups by students who can be traced back to our project. This indicates that a target-group-oriented educational program encourages motivation and awareness of entrepreneurial thinking and action among students.}, language = {en} } @inproceedings{MeyerPechtlBremeretal., author = {Meyer, Maximilian and Pechtl, Lin and Bremer, Peik and Schmitt, Jan}, title = {Towards position-based technologies for digitized process management on the shop floor}, series = {Proceedings of the 24th International Symposium on Logistics - Supply Chain Networks vs Platforms: Innovations, Challenges and Opportunities, W{\"u}rzburg}, booktitle = {Proceedings of the 24th International Symposium on Logistics - Supply Chain Networks vs Platforms: Innovations, Challenges and Opportunities, W{\"u}rzburg}, pages = {232 -- 241}, abstract = {Position-based technologies, e.g Ultrawideband (UWB), WiFi or Bluetooth, for indoor localisation purposes are already commercially available. With the highly increasing digitalization of industrial processes, the potential of these technologies comes into focus of process management research. This paper aims to structure position-based technologies according to their potential to support shop-floor process management. For this purpose, a framework with the following dimensions is developed: technical performance properties of the IPS, economical aspects, relevant use-case requirements, and appropriate data aggregation strategies. Following this, two representable use-cases show the implementation of an indoor-positioning-system and the data aggregation in order to derive relevant process data from position data.}, language = {en} } @phdthesis{SchmittPetzoldtAckvaetal., author = {Schmitt, Maximilian and Petzoldt, J{\"u}rgen and Ackva, Ansgar and Stadler, Alexander}, title = {Aktive Dämpfung von Gleichtaktstörungen in elektrischen Antriebssystemen}, publisher = {TU Ilmenau}, address = {Ilmenau}, pages = {156}, abstract = {Die vorliegende Arbeit besch{\"a}ftigt sich mit der Entstehung und Wirkung von Gleichtaktst{\"o}rungen in elektrischen Antriebssystemen. Parasit{\"a}re Gleichtaktimpedanzen bilden zusammen mit Gegentaktimpedanzen des Antriebssystems parasit{\"a}re Resonanzschwingkreise aus, welche von den Schalthandlungen der eingesetzten Umrichter im Antriebssystem zum Schwingen angeregt werden. Einer der beiden Schwerpunkte befasst sich mit der Entwicklung einer analytischen Berechnungsmethode, um die vorhandenen parasit{\"a}ren Gleichtaktpfade sowie deren Resonanzfrequenzen zu ermitteln. Der zweite Schwerpunkt behandelt die M{\"o}glichkeit der aktiven D{\"a}mpfung von Gleichtaktst{\"o}rungen. Hierzu analysiert ein Algorithmus jede einzelne Schaltflanke im Umrichter auf deren Wirkung im Gleichtaktsystem. Anschließend kann diese zeitlich derart verschoben werden, dass die Schaltflanke eine bestm{\"o}gliche D{\"a}mpfung im Gleichtaktsystem erzielt. Einleitend werden die notwendigen Grundlagen zur Umrichtertechnik sowie der Ausbildung und Anregung von Resonanzschwingkreisen am Beispiel eines RLC-Reihenschwingkreises erkl{\"a}rt, der stellvertretend f{\"u}r das stark reduzierte Gleichtaktmodell eines modernen Antriebssystems steht. Die Literaturrecherche gibt einen detaillierten Einblick {\"u}ber aktuelle Methoden der Reduktion von Gleichtaktst{\"o}rungen wieder. Viele wissenschaftliche Ver{\"o}ffentlichungen behandeln modifizierte Ansteuerverfahren f{\"u}r die eingesetzten Umrichter, welche gezielt die Gleichtaktspannungen eines jeden Spannungsraumzeigers ausnutzen. Die Theorie und Funktionsweise des neuen Steuerverfahrens HCad, wird mathematisch hergeleitet und anhand eines idealen Simulationsmodells untersucht. Die Auswertung der Simulationsergebnisse erm{\"o}glicht es bereits, die d{\"a}mpfende Wirkung unter idealen Bedingungen zu quantifizieren. Die Umsetzung eines praxisnahen Laborpr{\"u}fstands dient der Verifikation und dem Vergleich realer Messungen mit den in der Simulation gewonnen Erkenntnissen. Die durchgef{\"u}hrten Messreihen best{\"a}tigen die M{\"o}glichkeit, Gleichtaktst{\"o}rungen mithilfe einer zeitlichen Flankenverschiebung im Umrichter zu bek{\"a}mpfen. Des Weiteren ist gezeigt, dass die Anwendung der aktiven Gleichtaktd{\"a}mpfung neben der eigentlichen Aufgabe eines Steuerverfahrens in vollem Umfang und {\"u}ber den kompletten Modulationsbereich eines Umrichters m{\"o}glich ist.}, language = {de} } @misc{WiessmannDresselSchmitt, author = {Wießmann, Harald and Dreßel, Bernd and Schmitt, Maximilian}, title = {Regelung von Phasenstr{\"o}men parallel geschalteter Wechselrichter [Patent, EP3297150]}, number = {EP3297150}, language = {en} }