Dokument-ID Dokumenttyp Verfasser/Autoren Herausgeber Haupttitel Abstract Auflage Verlagsort Verlag Erscheinungsjahr Seitenzahl Schriftenreihe Titel Schriftenreihe Bandzahl ISBN Quelle der Hochschulschrift Konferenzname Bemerkung Quelle:Titel Quelle:Jahrgang Quelle:Heftnummer Quelle:Erste Seite Quelle:Letzte Seite URN DOI Zugriffsart Link Abteilungen OPUS4-9249 Konferenzveröffentlichung Finger, Felix, f.finger@fh-aachen.de; Khalsa, R., ; Kreyer, Jörg, kreyer@fh-aachen.de; Mayntz, Joscha, mayntz@fh-aachen.de; Braun, Carsten, c.braun@fh-aachen.de; Dahmann, Peter, dahmann@fh-aachen.de; Esch, Thomas, esch@fh-aachen.de; Kemper, Hans, h.kemper@fh-aachen.de; Schmitz, O., ; Bragard, Michael, bragard@fh-aachen.de An approach to propulsion system modelling for the conceptual design of hybrid-electric general aviation aircraft In this paper, an approach to propulsion system modelling for hybrid-electric general aviation aircraft is presented. Because the focus is on general aviation aircraft, only combinations of electric motors and reciprocating combustion engines are explored. Gas turbine hybrids will not be considered. The level of the component's models is appropriate for the conceptual design stage. They are simple and adaptable, so that a wide range of designs with morphologically different propulsive system architectures can be quickly compared. Modelling strategies for both mass and efficiency of each part of the propulsion system (engine, motor, battery and propeller) will be presented. 2019 15 Seiten Deutscher Luft- und Raumfahrtkongress 2019, 30.9.-2.10.2019, Darmstadt Fachbereich Elektrotechnik und Informationstechnik OPUS4-10614 Wissenschaftlicher Artikel Fayyazi, Mojgan, ; Sardar, Paramjotsingh, sardar@fh-aachen.de; Thomas, Sumit Infent, ; Daghigh, Roonak, ; Jamali, Ali, ; Esch, Thomas, esch@fh-aachen.de; Kemper, Hans, h.kemper@fh-aachen.de; Langari, Reza, ; Khayyam, Hamid, Artificial intelligence/machine learning in energy management systems, control, and optimization of hydrogen fuel cell vehicles Environmental emissions, global warming, and energy-related concerns have accelerated the advancements in conventional vehicles that primarily use internal combustion engines. Among the existing technologies, hydrogen fuel cell electric vehicles and fuel cell hybrid electric vehicles may have minimal contributions to greenhouse gas emissions and thus are the prime choices for environmental concerns. However, energy management in fuel cell electric vehicles and fuel cell hybrid electric vehicles is a major challenge. Appropriate control strategies should be used for effective energy management in these vehicles. On the other hand, there has been significant progress in artificial intelligence, machine learning, and designing data-driven intelligent controllers. These techniques have found much attention within the community, and state-of-the-art energy management technologies have been developed based on them. This manuscript reviews the application of machine learning and intelligent controllers for prediction, control, energy management, and vehicle to everything (V2X) in hydrogen fuel cell vehicles. The effectiveness of data-driven control and optimization systems are investigated to evolve, classify, and compare, and future trends and directions for sustainability are discussed. Basel MDPI 2023 1 15 This article belongs to the Special Issue "Circular Economy and Artificial Intelligence" 6 38 10.3390/su15065249 weltweit https://doi.org/10.3390/su15065249 Fachbereich Luft- und Raumfahrttechnik OPUS4-10645 Konferenzveröffentlichung Veettil, Yadu Krishna Morassery, ; Rakshit, Shantam, ; Schopen, Oliver, o.schopen@fh-aachen.de; Kemper, Hans, h.kemper@fh-aachen.de; Esch, Thomas, esch@fh-aachen.de; Shabani, Bahman, Bin Abdollah, Mohd Fadzli; Amiruddin, Hilmi; Singh, Amrik Singh Phuman; Munir, Fudhail Abdul; Ibrahim, Asriana Automated Control System Strategies to Ensure Safety of PEM Fuel Cells Using Kalman Filters Having well-defined control strategies for fuel cells, that can efficiently detect errors and take corrective action is critically important for safety in all applications, and especially so in aviation. The algorithms not only ensure operator safety by monitoring the fuel cell and connected components, but also contribute to extending the health of the fuel cell, its durability and safe operation over its lifetime. While sensors are used to provide peripheral data surrounding the fuel cell, the internal states of the fuel cell cannot be directly measured. To overcome this restriction, Kalman Filter has been implemented as an internal state observer. Other safety conditions are evaluated using real-time data from every connected sensor and corrective actions automatically take place to ensure safety. The algorithms discussed in this paper have been validated thorough Model-in-the-Loop (MiL) tests as well as practical validation at a dedicated test bench. Singapore Springer Nature 2022 3 Proceedings of the 7th International Conference and Exhibition on Sustainable Energy and Advanced Materials (ICE-SEAM 2021), Melaka, Malaysia 978-981-19-3178-9 The 7th International Conference and Exhibition on Sustainable Energy and Advanced Material (ICE-SEAM 2021) was organized by Universiti Teknikal Malaysia Melaka (UTeM), Malaysia, in association with the Universitas Sebelas Maret (UNS), Indonesia, on 23 November 2021 296 299 10.1007/978-981-19-3179-6_55 campus https://doi.org/10.1007/978-981-19-3179-6_55 Fachbereich Luft- und Raumfahrttechnik OPUS4-10660 Konferenzveröffentlichung Kemper, Hans, h.kemper@fh-aachen.de; Hellenbroich, Gereon, ; Esch, Thomas, esch@fh-aachen.de Concept of an innovative passenger-car hybrid drive for European driving conditions The downsizing of spark ignition engines in conjunction with turbocharging is considered to be a promising method for reducing CO₂ emissions. Using this concept, FEV has developed a new, highly efficient drivetrain to demonstrate fuel consumption reduction and drivability in a vehicle based on the Ford Focus ST. The newly designed 1.8L turbocharged gasoline engine incorporates infinitely variable intake and outlet control timing and direct fuel injection utilizing piezo injectors centrally located. In addition, this engine uses a prototype FEV engine control system, with software that was developed and adapted entirely by FEV. The vehicle features a 160 kW engine with a maximum mean effective pressure of 22.4 bar and 34 % savings in simulated fuel consumption. During the first stage, a new electrohydraulically actuated hybrid transmission with seven forward gears and one reverse gear and a single dry starting clutch will be integrated. The electric motor of the hybrid is directly connected to the gear set of the transmission. Utilizing the special gear set layout, the electric motor can provide boost during a change of gears, so that there is no interruption in traction. Therefore, the transmission system combines the advantages of a double clutch controlled gear change (gear change without an interruption in traction) with the efficient, cost-effective design of an automated manual transmission system. Additionally, the transmission provides a purely electric drive system and the operation of an air-conditioning compressor during the engine stop phases. One other alternative is through the use of CAI (Controlled Auto Ignition), which incorporates a process developed by FEV for controlled compression ignition. Braunschweig Gesamtzentrum für Verkehr (GZVB) 2009 23 Hybrid vehicles and energy management : 6th symposium ; 18th and 19th February 2009, Stadthalle Braunschweig 978-3-937655-20-8 Artikel zu finden unter: https://www.fev.com/fileadmin/user_upload/Media/TechnicalPublications/Transmission/IV_1_Concept_of_an_Innovative_Passenger-Car_Hybrid_Drive_for_European_Driving_Conditions.pdf 264 287 Fachbereich Luft- und Raumfahrttechnik OPUS4-1185 Wissenschaftlicher Artikel Esch, Thomas, esch@fh-aachen.de; Salber, W., ; Kemper, Hans, ; Staay, F. van der, Der elektromechanische Ventiltrieb - Systembaustein für zukünftige Antriebskonzepte, Teil 1. Basel Springer Nature 2000 10 Motortechnische Zeitschrift (MTZ). 61 12 826 836 10.1007/bf03227081 campus https://doi.org/10.1007/bf03227081 Fachbereich Luft- und Raumfahrttechnik OPUS4-1184 Wissenschaftlicher Artikel Esch, Thomas, esch@fh-aachen.de; Salber, W., ; Kemper, Hans, ; Staay, F. van der, Der elektromechanische Ventiltrieb - Systembaustein für zukünftige Antriebskonzepte, Teil 2. Basel Springer Nature 2001 11 Motortechnische Zeitschrift (MTZ). 62 1 44 55 10.1007/bf03227081 campus https://doi.org/10.1007/bf03227081 Fachbereich Luft- und Raumfahrttechnik OPUS4-10644 Konferenzveröffentlichung Schopen, Oliver, o.schopen@fh-aachen.de; Kemper, Hans, h.kemper@fh-aachen.de; Esch, Thomas, esch@fh-aachen.de Development of a comparison methodology and evaluation matrix for electrically driven compressors in ICE and FC In addition to electromobility and alternative drive systems, a focus is set on electrically driven compressors (EDC), with a high potential for increasing the efficiency of internal combustion engines (ICE) and fuel cells [01]. The primary objective is to increase the ICE torque, provided independently of the ICE speed by compressing the intake air and consequently the ICE filling level supported by the compressor. For operation independent from the ICE speed, the EDC compressor is decoupled from the turbine by using an electric compressor motor (CM) instead of the turbine. ICE performances can be increased by the use of EDC where individual compressor parameters are adapted to the respective application area [02] [03]. This task contains great challenges, increased by demands with regard to pollutant reduction while maintaining constant performance and reduced fuel consumption. The FH-Aachen is equipped with an EDC test bench which enables EDC-investigations in various configurations and operating modes. Characteristic properties of different compressors can be determined, which build the basis for a comparison methodology. Subject of this project is the development of a comparison methodology for EDC with an associated evaluation method and a defined overall evaluation method. For the application of this comparison methodology, corresponding series of measurements are carried out on the EDC test bench using an appropriate test device. Graz FH Joanneum 2021 1 Proceedings of the 1st UNITED – Southeast Asia Automotive Interest Group (SAIG) International Conference 978-3-902103-94-9 1st UNITED-SAIG International Conference, 21-22 APR 2021, Chulalongkorn University, Thailand 45 46 Fachbereich Luft- und Raumfahrttechnik OPUS4-10020 Bericht Hebel, Christoph, hebel@fh-aachen.de; Merkens, Torsten, merkens@fh-aachen.de; Feyerl, Günter, feyerl@fh-aachen.de; Kemper, Hans, h.kemper@fh-aachen.de; Busse, Daniel, busse@fh-aachen.de Elektromobilität - Verbundprojekt "COSTARTebus": Comprehensive strategy to accelerate the integration of electric-buses into existing public transport systems - Teilprojekt A : Berichtszeitraum: 01.01.2018-31.10.2020 Aachen Fachhochschule Aachen 2021 219 Seiten Förderkennzeichen BMVI 03EMEN10A Verbundnummer 01182550 Fachbereich Bauingenieurwesen OPUS4-9855 Konferenzveröffentlichung Haugg, Albert Thomas, ; Kreyer, Jörg, kreyer@fh-aachen.de; Kemper, Hans, h.kemper@fh-aachen.de; Hatesuer, Katerina, ; Esch, Thomas, esch@fh-aachen.de Heat exchanger for ORC. adaptability and optimisation potentials The recovery of waste heat requires heat exchangers to extract it from a liquid or gaseous medium into another working medium, a refrigerant. In Organic Rankine Cycles (ORC) on Combustion Engines there are two major heat sources, the exhaust gas and the water/glycol fluid from the engine's cooling circuit. A heat exchanger design must be adapted to the different requirements and conditions resulting from the heat sources, fluids, system configurations, geometric restrictions, and etcetera. The Stacked Shell Cooler (SSC) is a new and very specific design of a plate heat exchanger, created by AKG, which allows with a maximum degree of freedom the optimization of heat exchange rate and the reduction of the related pressure drop. This optimization in heat exchanger design for ORC systems is even more important, because it reduces the energy consumption of the system and therefore maximizes the increase in overall efficiency of the engine. 2020 10 Seiten IIR International Rankine 2020 Conference Conference: IIR International Rankine 2020 Conference - Heating, Cooling, Power Generation. Glasgow, 2020. 10.18462/iir.rankine.2020.1224 bezahl https://doi.org/10.18462/iir.rankine.2020.1224 Fachbereich Luft- und Raumfahrttechnik OPUS4-10643 Konferenzveröffentlichung Schopen, Oliver, o.schopen@fh-aachen.de; Shabani, Bahman, ; Esch, Thomas, esch@fh-aachen.de; Kemper, Hans, h.kemper@fh-aachen.de; Shah, Neel, Rahim, S.A.; As'arry, A.; Zuhri, M.Y.M.; Harmin, M.Y.; Rezali, K.A.M.; Hairuddin, A.A. Quantitative evaluation of health management designs for fuel cell systems in transport vehicles Focusing on transport vehicles, mainly with regard to aviation applications, this paper presents compilation and subsequent quantitative evaluation of methods aimed at building an optimum integrated health management solution for fuel cell systems. The methods are divided into two different main types and compiled in a related scheme. Furthermore, different methods are analysed and evaluated based on parameters specific to the aviation context of this study. Finally, the most suitable method for use in fuel cell health management systems is identified and its performance and suitability is quantified. 2022 2 2nd UNITED-SAIG International Conference Proceedings 2nd UNITED-SAIG International Conference, 23-24 May 2022, Putrajaya, Malaysia 1 3 weltweit https://www.saig-united.com/article/pub_0005/ - kostenlose Registrierung erforderlich Fachbereich Luft- und Raumfahrttechnik