Die Gepäckförderanlagen von Luftfahrt-Drehkreuzen wie Peking oder Dubai gehören mit etwa 100 km Förderstrecke und 10.000 Transporteinheiten heute zu den größten automatisierten Logistiksystemen. Die Professur für Technische Logistik der TU Dresden ist an ihrer Planung und Simulation beteiligt und entwickelt Werkzeuge für den Systementwurf. Der Beitrag stellt zuerst Gepäckförderanlagen und die Planungsaufgabe vor. Danach werden zwei innovative Konzepte für frühe Planungsstufen vorgestellt. Dabei wird das Anlagen-Layout in ein Knoten-Kanten-Modell überführt. So wird einerseits mit diskretisierten statistischen (Zeit-) Verteilungen das dynamische Anlagenverhalten schneller und ähnlich genau bewertet wie mit der Simulation. Andererseits werden statistische Maßzahlen aus der Theorie komplexer Netzwerke genutzt, um das Transportnetzwerk hinsichtlich Robustheit und Lastbalancierung zu optimieren. / Baggage handling systems of air hubs like Beijing or Dubai contain about 100 km of conveyor lines and 10,000 transport units. Thus they belong to today’s largest automated logistics systems. The Chair for Logistics Engineering at TU Dresden is involved in their planning and simulation and develops system design tools. The paper first introduces into the field and the design targets. Than two innovative concepts for early planning stages are presented which derive a node-link-model from the system’s layout. Now, the system dynamic is evaluated by means of time-discrete statistic distributions more rapidly and as exactly as by simulations. Besides, statistic measures from complex network theory are used to optimise the transport with respect to robustness and load balancing.

Die Gepäckförderanlagen von Luftfahrt-Drehkreuzen wie Peking oder Dubai gehören mit etwa 100 km Förderstrecke und 10.000 Transporteinheiten heute zu den größten automatisierten Logistiksystemen. Die Professur für Technische Logistik der TU Dresden ist an ihrer Planung und Simulation beteiligt und entwickelt Werkzeuge für den Systementwurf. Der Beitrag stellt zuerst Gepäckförderanlagen und die Planungsaufgabe vor. Danach werden zwei innovative Konzepte für frühe Planungsstufen vorgestellt. Dabei wird das Anlagen-Layout in ein Knoten-Kanten-Modell überführt. So wird einerseits mit diskretisierten statistischen (Zeit-) Verteilungen das dynamische Anlagenverhalten schneller und ähnlich genau bewertet wie mit der Simulation. Andererseits werden statistische Maßzahlen aus der Theorie komplexer Netzwerke genutzt, um das Transportnetzwerk hinsichtlich Robustheit und Lastbalancierung zu optimieren. / Baggage handling systems of air hubs like Beijing or Dubai contain about 100 km of conveyor lines and 10,000 transport units. Thus they belong to today’s largest automated logistics systems. The Chair for Logistics Engineering at TU Dresden is involved in their planning and simulation and develops system design tools. The paper first introduces into the field and the design targets. Than two innovative concepts for early planning stages are presented which derive a node-link-model from the system’s layout. Now, the system dynamic is evaluated by means of time-discrete statistic distributions more rapidly and as exactly as by simulations. Besides, statistic measures from complex network theory are used to optimise the transport with respect to robustness and load balancing.

The development of high power density three-phase ac converter has been a hot topic in power electronics area due to the increasing needs in applications like electric vehicle, aircraft and aerospace, where light weight and/or low volume is usually a must. Many challenges exist due to the complicated correlations in a three-phase power converter system. In addition, with the emerging SiC device technology the operating frequency of the converter can be potentially pushed to the range from tens of kHz to hundreds of kHz at higher voltage and higher power conditions. The extended frequency range brings opportunities to further improve the power density of the converter. Technologies based on existing devices need to be revisited. In this dissertation, a systematic methodology to analyze and design the high power density three-phase ac converter is developed. All the key factors of the converter design are explored from the high density standpoint. Firstly, the criteria for the passive filter selection are derived and the relationship between the switching frequency and the size of the EMI filter is investigated. A function integration concept as well as the physical design approach is proposed. Secondly, a topology evaluation method is presented, which provides the insight into the relationships between the system constraints, operating conditions and design variables. Four topologies are then compared with the proposed approach culminating with a favored topology under the given conditions. Thirdly, a novel average model is developed for the selected topology, and used for devising a carrier-based control approach with simple calculation and good regulation performance. Fourthly, the converter failure mode operation and corresponding protection approaches are discussed and developed. Finally, a 10 kW three-phase ac/ac converter is built with the SiC devices. All the key concepts and ideas developed in this work are implemented in this hardware system and then verified by the experimental results. / Ph. D.