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Flywheel Hybrid Drives Compared to Conventional and Alternative Drivetrain Concepts

ATZ worldwide 2014年第10期116卷 40-45页

作者： Bader, Michael Buchroithner, Armin Andrasec, Ivan Institute for Machine Elements and Methods of Development Graz University of Technology Graz Austria

Hybridisation of the drivetrain can lead to significantly reduced fuel consumption while at the same time allowing driving cycles that are acceptable for the user and can easily be integrated in existing traffic. This requires specific properties of the secondary energy storage unit. Consequently not all storage systems are equally suitable. Specific properties, requirements and the resulting problems are discussed using the example of flywheel energy storage systems (FESS). Energetic dimensioning of the storage unit and vehicle operating strategies are investigated from a practical, holistic point of view taking an urban transit bus as an example.

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Application of the ARCADIA Method on a Bulk Carrier Vessel Equipped with a Wind-assistance Device

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INCOSE International Symposium 2024年第1期34卷 24-36页

作者： Dreier, Mathias Bajzek, Matthias Hick, Hannes Michels, Nico Burchardt, Carsten Aoyama, Kazuhiro Institute of Machine Elements and Methods of Development Graz University of Technology Austria Institute Institute of Machine Elements and Methods of Development Graz University of Technology Austria Head of Digital Enterprise Siemens Industry Software GmbH Science Siemens Industry Software GmbH Department of Systems Innovation School of Engineering The University of Tokyo Japan

The maritime industry is undergoing a major transformation to achieve reduction of greenhouse gas emissions. Many new options, such as alternative propulsion systems and fuels, optimized routes, or auxiliary propulsion systems, including wind-assistance devices, need to be integrated and aligned within a wide network of different stakeholders. New ways are necessary to work with and manage the increasing complexity in the maritime industry. Model-based systems engineering approaches are a promising strategy to gain a better understanding of the as-is situation and to develop advanced solutions. This paper shows the application of the ARCADIA method for the maritime industry, with the target of integrating wind-assistance devices to vessels, using the ARCADIA modeling language and the Capella tool. Copyright © 2024 by Dreier et al. Permission granted to INCOSE to publish and use.

关键词： Marine industry

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A Classification Method for the Systematic Identification of Models and Workflows in MBSE 33

A Classification Method for the Systematic Identification of...

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33rd Symposium Design for X, DFX 2022

作者： Hoepfner, Gregor Kowalski, Julia Faustmann, Clemens Zerwas, Thilo Kranabitl, Philipp Vafaei, Seyedmohammad Jacobs, Georg Hick, Hannes Institute for Machine Elements and Systems Engineering RWTH Aachen University Germany Methods for Model-based Development in Computational Engineering RWTH Aachen University Germany Institute of Machine Components and Methods of Development TU Graz Austria

Modern engineering uses models for virtual verification of systems. Such models are usually combined in workflows, where the results of models are linked to verify system requirements. Model-Based Systems Engineering (MBSE) has evolved as an approach to ease the usage of models and workflows. One goal in MBSE is to reuse models and workflows from libraries. However, the step of identifying and classifying both models and workflows for such a library is not yet systematized. We propose a method on how to identify models and workflows for an MBSE model library. Possible purposes of models are identified and afterwards models satisfying that purpose are retrieved. The identified models are systematically combined to workflows. Thereby a systematic approach to create a model library is given. © 2022 die Autoren.

关键词： Libraries

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Optimal system design and ideal application of flywheel energy storage systems for vehicles

Optimal system design and ideal application of flywheel ener...

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2012 IEEE International Energy Conference and Exhibition, ENERGYCON 2012

作者： Buchroithner, A. Andrasec, I. Bader, M. Institute for Machine Elements and Methods of Development Graz University of Technology Inffeldgasse 21b/II 8010 Graz Austria

ISBN: (纸本)9781467314541

Even though the r&d activities in the field of energy storage are currently being pushed all over the globe, the results are still far from satisfactory. This paper describes how the benefits of flywheel energy storage systems (FESS) can be exploited even though some properties still need to be improved significantly in the near future. Within a research project at the Graz University of Technology an FESS for application in vehicles serving urban public transportation (UPT) was investigated. The systematic design process and the problems of the proposed topology are discussed. Finally, solutions are suggested, which allow the maximum exploitation of the properties of kinetic energy storage. These recommended solutions do not only affect the flywheel design itself, but also its mode of application. This means that a holistic approach was chosen, which takes into account the whole super-system of the flywheel hybrid vehicle. © 2012 IEEE.

关键词： Energy storage

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A concept for a digital thread based on the connection of system models and specific models

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INCOSE International Symposium 2021年第1期31卷 1035-1048页

作者： Bajzek, Matthias Faustmann, Clemens Krems, Daniel Kranabitl, Philipp Hick, Hannes Institute for Machine Elements and Methods for Development Graz University of Technology Australia

This paper describes the concept of a method that uses an existing system model, that describes the system's functions, to select the most suitable models for development. The term model is understood to encompass models used during the development of systems that: have a certain degree of formalism, are digitizable, connectable and processable. The method describes how specific models that are required can be identified and how they could be connected. The method concept is explained using a well-understood example taken from the development of automotive powertrains. After stating current challenges and problems in the development of complex systems in the automotive domain, a system cube is used as a structuring principle for models that describe certain system aspects such as structure and behavior. This concept acts as a starting point for the selection of the most suitable specific models allocated to system models based on the functional description of the considered system. Finally, the contribution of this research to the realization of a digital thread is discussed and future research topics are outlined. Copyright © 2021 by Matthias Bajzek, Clemens Faustmann, Philipp Kranabitl, Daniel Krems, Hannes Hick. Permission granted to INCOSE to publish and use.

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Designing an autonomous power system for a stand-alone heliostat

Designing an autonomous power system for a stand-alone helio...

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2016 IEEE Green Energy and Systems Conference, IGSEC 2016

作者： Buchroithner, Armin Ganapathi, Gani B. Nataraj, Sai Kindler, Andrew Institute for Machine Elements and Development Methods Graz University of Technology Graz Austria Jet Propulsion Laboratory California Institute of Technology PasadenaCA United States California State University Los Angeles CA United States DMF Lighting CarsonCA United States

ISBN: (纸本)9781509022946

Concentrated Solar Power (CSP) offers a number of advantages over photovoltaic at large scale power generation, such as lower cost and the option of thermal energy storage. However, the costs of a power tower plant are dominated by heliostats, which are usually 50% of the entire facility. NASA5s Jet Propulsion Laboratory was awarded funding by the DOE SunShot Initiative to develop a low-cost, rigid foam-based solar concentrator to meet installed cost goals of S75/m2 versus current costs of $200-250/m2. One of the key features of the newly developed design is the stand-alone power system based on PV-panels and a Li-Fe-battery, which reduces operation and installation costs. The approach was validated by building and testing of a small-scale (6m2) heliostat prototype. The design process and findings are described in detail. © 2016 IEEE.

关键词： Costs

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Estimating costs of heliostat production at high volumes based on a small-scale prototype

Estimating costs of heliostat production at high volumes bas...

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IEEE Green Energy and Systems Conference (IGESC)

作者： Armin Buchroithner Gani B. Ganapathi Art Palisoc Institute for Machine Elements and Development Methods Graz University of Technology Graz Austria Jet Propulsion Laboratory California Institute of Technology Pasadena California USA L'Garde Inc. Tustin California USA

ISBN: (纸本)9781509022953

Reducing the costs of heliostats is crucial for the worldwide deployment of Concentrated Solar Power (CSP). CSP offers a number of advantages over photovoltaic at large scale power generation, such as lower cost and the option of thermal energy storage. However, the costs of a power tower plant are dominated by heliostats, which are usually 50% of the entire facility. NASA 5 s Jet Propulsion Laboratory was awarded funding by the DOE SunShot Initiative to develop a low-cost, rigid foam-based solar concentrator to meet installed cost goals of S75/m 2 vs. current costs of - $200-250/m 2 . The design approach was validated by building and testing of a small-scale (6m 2 ) heliostat prototype. Based on the findings of this prototype costs estimates for high production volume using industrial manufacturing technologies were conducted. The findings of these studies as well as lessons learned from manufacturing of the prototype are presented in this paper.

关键词： Conferences Decision support systems

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Designing an autonomous power system for a stand-alone heliostat

Designing an autonomous power system for a stand-alone helio...

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IEEE Green Energy and Systems Conference (IGESC)

作者： Armin Buchroithner Gani B. Ganapathi Sai Nataraj Andrew Kindler Institute for Machine Elements and Development Methods Graz University of Technology Graz Austria Jet Propulsion Laboratory California Institute of Technology Pasadena California USA California State University Los Angeles California USA DMF Lighting Carson California USA

ISBN: (纸本)9781509022953

Concentrated Solar Power (CSP) offers a number of advantages over photovoltaic at large scale power generation, such as lower cost and the option of thermal energy storage. However, the costs of a power tower plant are dominated by heliostats, which are usually 50% of the entire facility. NASA 5 s Jet Propulsion Laboratory was awarded funding by the DOE SunShot Initiative to develop a low-cost, rigid foam-based solar concentrator to meet installed cost goals of S75/m 2 versus current costs of $200-250/m 2 . One of the key features of the newly developed design is the stand-alone power system based on PV-panels and a Li-Fe-battery, which reduces operation and installation costs. The approach was validated by building and testing of a small-scale (6m 2 ) heliostat prototype. The design process and findings are described in detail.

关键词： Conferences Decision support systems Erbium

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