Thematische Bibliographien / Hybrid Propulsion System

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Auswahl der wissenschaftlichen Literatur zum Thema „Hybrid Propulsion System“

Autor: Grafiati

Veröffentlicht am 26. Juni 2021

Zuletzt aktualisiert am 10. Februar 2022

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Zeitschriftenartikel zum Thema "Hybrid Propulsion System"

Muhammad, Andi Haris, Baharuddin, and Hasnawiya Hasan. "DESAIN KONFIGURASI SISTEM PROPULSI HYBRID TERHADAP PENGURANGAN KONSUMSI BBM KAPAL PENANGKAP IKAN 30 GT (Configuration Design of a Hybrid Propulsion System to Reduce Fuel Oil Consumption of a 30 GT Fishing Vessel)." Marine Fisheries : Journal of Marine Fisheries Technology and Management 10, no. 1 (2019): 1–9. http://dx.doi.org/10.29244/jmf.10.1.1-9.

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This study aims to reduce fuel oil consumption of a 30 GT fishing vessel through configuration design of diesel and electric motor hybrids propulsion system. The configuration design of hybrids propulsion system systematically include; i) loading assumption; ii) prediction of speed-thrust; iii) prediction of fuel oil consumption. Design of hybrids propulsion system was analyzed by using the concept of time domain simulation of vessel movement. The result indicated that the hybrids propulsion system implemented to fishing vessel was very effective to reduce fuel consumption compared with conventional propulsion system, especially in variation of loading and speed condition.Keywords: fishing vessel, hybrids propulsion system and fuel oilPenelitian ini bertujuan untuk mengurangi konsumsi bahan bakar minyak kapal penangkap ikan 30 GT melalui desain konfigurasi sistem propulsi hybrid diesel-listrik. Secara sistematis perancangan sistem propulsi hybrid meliputi; i) asumsi pembebanan operasi; ii) prediksi speed-thrust; iii) prediksi konsumsi bahan bakar. Desain sistem propulsi hybrid dianalisis dengan menggunakan konsep time domain simulation pergerakan kapal. Hasil penelitian menunjukkan bahwa penggunaan sistem propulsi hybrid pada kapal penangkap ikan sangat efektif dalam mengurangi konsumsi bahan bakar dibandingkan dengan sistem propulsi konvensional, terkhusus pada kondisi pemuatan dan kecepatan yang bervariasi.Kata kunci: Bahan bakar, kapal penangkap ikan, sistem propulsi hybrid

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ISVORANU, Dragoș Daniel, Petrișor-Valentin PÂRVU, and Octavian GRIGORE. "A HYBRID PROPULSION SYSTEM FOR UAS." SCIENTIFIC RESEARCH AND EDUCATION IN THE AIR FORCE 21, no. 1 (2019): 135–50. http://dx.doi.org/10.19062/2247-3173.2019.21.19.

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Leśniewski, Wojciech, Daniel Piątek, Konrad Marszałkowski, and Wojciech Litwin. "Small Vessel with Inboard Engine Retrofitting Concepts; Real Boat Tests, Laboratory Hybrid Drive Tests and Theoretical Studies." Energies 13, no. 10 (2020): 2586. http://dx.doi.org/10.3390/en13102586.

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The development of modern technologies and their increasing availability, as well as the falling costs of highly efficient propulsion systems and power sources, have resulted in electric or hybrid propulsions systems’ growing popularity for use on watercraft. Presented in the paper are design and lab tests of a prototype parallel hybrid propulsion system. It describes a concept of retrofitting a conventionally powered nine meter-long vessel with the system, and includes results of power and efficiency measurements, as well as calculations of the vessel’s operating range under the propulsion of its electric motor. The concept of adding of a solar panels array was studied.

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Rizzo, Gianfranco, Shayesteh Naghinajad, Francesco Tiano, and Matteo Marino. "A Survey on Through-the-Road Hybrid Electric Vehicles." Electronics 9, no. 5 (2020): 879. http://dx.doi.org/10.3390/electronics9050879.

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Hybrid Electric Vehicles (HEVs) can be divided into three categories according to how the two propulsion systems (the thermal and the electric ones) supply the driving torque to the vehicle. When the torque is supplied only by an electric propulsion system, while the heat engine takes care of generating the electricity needed to operate the system, it is called a hybrid-series. Conversely, when both propulsion systems provide torque, the vehicle is identified with parallel hybrid wording. Among the parallel hybrids there is a particular configuration called Through-the-Road (TTR). In this configuration, the two propulsion systems are not mechanically connected to each other, but it is precisely the road that allows hybrid propulsion. This architecture, dating back to the early twentieth century, is still used by several manufacturers and carries with it peculiar configurations and control methods. It is also a configuration that fits well with the transformation of conventional vehicles into a hybrid. The paper presents a survey of the TTR HEV solution, evidencing applications, potentialities and limits.

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Lents, Charles E. "Hybrid Electric Propulsion." Mechanical Engineering 142, no. 06 (2020): 54–55. http://dx.doi.org/10.1115/1.2020-jun5.

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Abstract Electrified propulsion holds the promise of reducing aviation’s CO2 emissions footprint through three means: access to green grid electric energy, improvements in aircraft performance through new airframe and propulsion system architectures and enabling further optimization of the gas turbine cycle. Charging an aircraft battery pack with green electric energy and using this energy to drive electric propulsors results in a zero emissions vehicle. This is practical for light aircraft and short missions. Boosting a Jet-A burning gas turbine with green electric energy (again stored in a ground charged battery), in either a parallel or series turbo-electric architecture can yield a net reduction in CO2 emissions, as long as the fuel burn required to carry the weight of a discharged battery pack does not overcome the reduction in fuel burn afforded by the ground charged battery. Several studies have indicated that a net savings is possible with cell level energy densities approach ∼ 500 whr/kg, a reasonable target for the 2030 time frame. Electrified propulsion can also enable unique aircraft configurations, employing a veryhigh efficiency prime mover (gas turbine) designed for running only a generator at peak efficiency, and/or distributing the propulsors throughout the aircraft, for improvement in L/D and propulsive efficiency.

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Ghaderi, Ahmad, Amir A. F. Nassiraei, and Kazuo ISHII. "2P1-C18 A Novel Hybrid Propulsion System For Mobile Robots." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2008 (2008): _2P1—C18_1—_2P1—C18_3. http://dx.doi.org/10.1299/jsmermd.2008._2p1-c18_1.

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Sabadosh, Lyubomyr, Serhii Larkov, Oleg Kravchenko, and Vladyslav Sereda. "Increasingly Safe, High-Energy Propulsion System for Nano-Satellites." Transactions on Aerospace Research 2018, no. 4 (2018): 38–44. http://dx.doi.org/10.2478/tar-2018-0028.

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Summary Numerous attempts have been undertaken to develop propulsion systems for nano-satellite-type spacecrafts to enable their maneuvering in orbits. One of the potentially viable chemical propellant propulsion systems is a hybrid system. The present paper studies propellant composition variants with the metal hydride as fuel that can be chosen for a nano-satellite hybrid propulsion system. It defines key requirements for chemical propellant nano-satellite propulsion systems, and specifies potential propellant pairs based on a compact metal hydride. The study describes basic technical characteristics of a 1U CubeSat propulsion system.

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Wieczorek, Bartosz, Łukasz Warguła, and Dominik Rybarczyk. "Impact of a Hybrid Assisted Wheelchair Propulsion System on Motion Kinematics during Climbing up a Slope." Applied Sciences 10, no. 3 (2020): 1025. http://dx.doi.org/10.3390/app10031025.

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Overcoming terrain obstacles presents a major problem for people with disabilities or with limited mobility who are dependent on wheelchairs. An engineering solution designed to facilitate the use of wheelchairs are assisted-propulsion systems. The objective of the research described in this article is to analyze the impact of the hybrid manual–electric wheelchair propulsion system on the kinematics of the anthropotechnical system when climbing hills. The tests were carried out on a wheelchair ramp with an incline of 4°, using a prototype wheelchair with a hybrid manual–electric propulsion system in accordance with the patent application P.427855. The test subjects were three people whose task was to propel the wheelchair in two assistance modes supporting manual propulsion. The first mode is hill-climbing assistance, while the second one is assistance with propulsion torque in the propulsive phase. During the tests, several kinematic parameters of the wheelchair were monitored. An in-depth analysis was performed for the amplitude of speed during a hill climb and the number of propulsive cycles performed on a hill. The tests performed showed that when propelling the wheelchair only using the hand rims, the subject needed an average of 13 ± 1 pushes on the uphill slope, and their speed amplitude was 1.8 km/h with an average speed of 1.73 km/h. The climbing assistance mode reduced the speed amplitude to 0.76 km/h. The torque-assisted mode in the propulsive phase reduced the number of cycles required to climb the hill from 13 to 6, while in the climbing assistance mode the number of cycles required to climb the hill was reduced from 12 to 10 cycles. The tests were carried out at various values of assistance and assistance amplification coefficient, and the most optimally selected parameters of this coefficient are presented in the results. The tests proved that electric propulsion assistance has a beneficial and significant impact on the kinematics of manual wheelchair propulsion when compared to a classic manual propulsion system when overcoming hills. In addition, assistance and assistance amplification coefficient were proved to be correlated with operating conditions and the user’s individual characteristics.

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ORKISZ, Marek, Piotr WYGONIK, Michał KUŹNIAR, and Maciej KALWARA. "Comparative analysis of combustion engine and hybrid propulsion unit in aviation application in terms of emission of harmful compounds in the exhausts emitted to the atmosphere." Combustion Engines 178, no. 3 (2019): 213–17. http://dx.doi.org/10.19206/ce-2019-337.

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Comparative analysis of combustion and hybrid propulsion unit in aviation application in terms of emission of harmful compounds in the exhausts emitted to the atmosphere. For the propulsion of the AOS 71 motor glider, two types of propulsion were planned as de-velopment versions. The first analysed propulsion is based on a combustion engine, but of the Wankel type (LCR 814 engine with the power of 55 kW). The second designed propulsion is an hybrid based on a LCR 407 combustion engine with a power of 28 kW, which is connected in series with an electric generator propelling the engine (Emrax 228 engine), total power of the propulsion is 55 kW. The comparison of emissions of harmful compounds emitted to the atmosphere generated by the combustion and hybrid power unit intended for assembly in the AOS 71 motor glider, assuming various loads and methods of hybrid propulsion control, was made. The tests were conducted in laboratory conditions. Several different programs were designed to simulate different energy management methods in a hybrid system, depending on the predicted mission and load of the motor glider. On the basis of laboratory tests, exhaust emission was determined from both propulsions as a function of rotational speed and load. Then, based on the assumed flight trajectory and collected test data, the emission for both propulsions variants was determined. The values of emission parameters were compared and the results were presented in diagrams and discussed in the conclusions

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Litwin, Wojciech, Wojciech Leśniewski, and Jakub Kowalski. "Energy Efficient and Environmentally Friendly Hybrid Conversion of Inland Passenger Vessel." Polish Maritime Research 24, no. 4 (2017): 77–84. http://dx.doi.org/10.1515/pomr-2017-0138.

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Abstract The development and growing availability of modern technologies, along with more and more severe environment protection standards which frequently take a form of legal regulations, are the reason why attempts are made to find a quiet and economical propulsion system not only for newly built watercraft units, but also for modernised ones. Correct selection of the propulsion and supply system for a given vessel affects significantly not only the energy efficiency of the propulsions system but also the environment - as this selection is crucial for the noise and exhaust emission levels. The paper presents results of experimental examination of ship power demand performed on a historic passenger ship of 25 m in length. Two variants, referred to as serial and parallel hybrid propulsion systems, were examined with respect to the maximum length of the single-day route covered by the ship. The recorded power demands and environmental impact were compared with those characteristic for the already installed conventional propulsion system. Taking into account a high safety level expected to be ensured on a passenger ship, the serial hybrid system was based on two electric motors working in parallel and supplied from two separate sets of batteries. This solution ensures higher reliability, along with relatively high energy efficiency. The results of the performed examination have revealed that the serial propulsion system is the least harmful to the environment, but its investment cost is the highest. In this context, the optimum solution for the ship owner seems to be a parallel hybrid system of diesel-electric type

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Dissertationen zum Thema "Hybrid Propulsion System"

Ahmed, Ozomata D. "Hybrid propulsion system for CubeSat applications." Thesis, University of Surrey, 2016. http://epubs.surrey.ac.uk/812899/.

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The CubeSats platform has become a common basis for the development and flight of very small, low cost spacecraft-particularly amongst University groups. The smallest CubeSats are just 1 litre in volume-comprising a 10.

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Green, Michael W. "HAPSS, Hybrid Aircraft Propulsion System Synthesis." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/817.

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Hybrid Aircraft Propulsion System Synthesis (HAPSS) is a computer program that sizes and analyzes pure-series hybrid electric propulsion systems for aircraft. The development of this program began during a NASA SBIR contract, in conjunction with Empirical Systems Aerospace (ESAero), with the creation of a propulsion fan design tool. Since the completion of this contract in July 2010, the HAPSS program has been expanded to combine the many aspects of a hybrid propulsion system such as the propulsive fans, electric motors, generators, and controllers, and the internal combustion engines. This thesis describes the benefits and drawbacks of aircraft hybrid propulsion systems to reveal the usefulness of a program of this nature. The methodology behind HAPSS, the creation of the program, its operation, and its many applications are also discussed in detail. Finally, this thesis includes a brief example in which HAPSS is used to analyze a hybrid propulsion system for a commercial transport aircraft. This example demonstrated the usefulness of the program and revealed interesting behavior and trends unique to hybrid propulsion. To date, the HAPSS program has been utilized on several different contract projects in which an aircraft hybrid propulsion system was designed. In the summer of 2012, a government organization in conjunction with ESAero will begin funding a contract to continue the development of HAPSS by adding functionality and improving accuracy while making the tool available to other government agencies.

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Åkesson, Elsa, Maximilian Kempe, Oskar Nordlander, and Rosa Sandén. "Unmanned Aerial Vehicle Powered by Hybrid Propulsion System." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-277115.

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I samband med den globala uppvärmningen ökar efterfrågan för rena och förnybara bränslen alltmer i dagens samhälle. Eftersom flygindustrin idag är ansvarig för samma mängd växthusgaser som all motortrafik i Sverige, skulle ett byte till en avgasfri energikälla för flygfarkoster vara ett stort framsteg. Därför har projektet genom modellering framtagit ett hybridsystem av ett batteri och en bränslecell och undersökt hur kombinationen av olika storlekar på dem presterar i en driftcykel. Då batterier har hög specifik effekt men är tunga, kompletteras de med fördel av bränsleceller, som är lättviktiga och bidrar med uthållig strömförsörjning. På så sätt blir hybriden optimal för flygfarkoster. Kandidatarbetet är en del av projektet Green Raven, ett tvärvetenskapligt samarbete mellan instutitionerna Tillämpad Elektrokemi, Mekatronik och Teknisk Mekanik på Kungliga Tekniska Högskolan. Driftcykelmodelleringen gjordes i Simulink, och flera antaganden gjordes beträffande effektprofilen, samt bränslecellens mätvärden och effekt. Tre olika energihushållningsscheman skapades, vilka bestämde bränslecellseffekten beroende på vätgasnivån och batteriets laddningstillstånd. Skillnaden på systemen var vilka intervall av laddningstillstånd hos batteriet som genererade olika effekt hos bränslecellen. Det bästa alternativet visade sig vara 0/100-systemet, eftersom det var det enda som inte orsakede någon degradering av bränslecellens kapacitet.<br>In today’s society, with several environmental challenges such as global warming, the demand for cleanand renewable fuels is ever increasing. Since the aviation industry in Sweden is responsible for the sameamount of greenhouse gas emissions as the motor traffic, a change to a non-polluting energy source forflying vehicles would be considerable progress. Therefore, this project has designed a hybrid system of abattery and a fuel cell and investigated how different combinations of battery and fuel cell sizes perform ina drive cycle, through computer modelling. As batteries possess a high specific power but are heavy, thefuel cells with high specific energy complement them with a sustained and lightweight power supply,which makes the hybrid perfect for aviation. The bachelor thesis is a part of Project Green Raven, aninterdisciplinary collaboration with the institutions of Applied Electrochemistry, Mechatronics andEngineering Mechanics at KTH Royal Institute of Techology. The drive cycle simulations were done inSimulink, and several assumptions regarding the power profile, fuel cell measurements and power weremade. Three different energy management strategies were set up, determining the fuel cell powerdepending on hydrogen availability and state of charge of the battery. The strategies were called 35/65,20/80 and 0/100, and the difference between them was at which state of charge intervals the fuel cellchanged its power output. The best strategy proved to be 0/100, since it was the only option which causedno degradation of the fuel cell whatsoever.

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Ren, Zhongling. "Optimization Methods for Hybrid Electric Vehicle Propulsion System." Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-235932.

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Design of hybrid vehicles is a hot topic because of the strict restriction on the emissions of the vehicle. The optimal design of hybrid vehicles becomes necessary to reduce the cost or emissions of the vehicle. The propulsion system of a hybrid electric vehicle is inherently more complex than that of a conventional vehicle as an electric power supply branch is added. The design involves topology design, component design and control design, where all phases are interrelated. The idea to handle all the three design phases together is called system level design. Due to its complexity, it is not possible time wise to evaluate all possible design options. Optimization algorithms are therefore needed to speed up the process. The variable types that appear in each design phase are different and multiple algorithms are needed. In this thesis, different algorithms are studied for their robustness for both continuous variables and discrete variables, as well as benchmarked for the Volvo internal optimization platform afterwards. Standard test cases are used to validate the algorithms and several features are added to an algorithm to make it more generic and efficient. Based on theoretical and experimental studies, recommendations for the selection of algorithms are proposed based on different types of variables.Based on the optimization platform, several different optimization coordination architectures for system level design are introduced and simultaneous and nested coordination architectures are tested by one specific industrial case in the second part of the thesis. Both methods appeared to be promising according to the result of the test case and they managed to reduce the convergence time dramatically. The vehicle model used was not precise enough to prove which method is the superior one but a more precise model can be introduced in the future to facilitate such a conclusion.<br>Hybridfordon är ett aktuellt ämne, på grund av den strikta regleringen gällande fordonsutsläpp. Den optimala designen av hybridfordon är nödvändig för att reducera kostnaden eller utsläppen. Motorsystemet hos ett elektriskt hybridfordon blir mer komplicerat än det hos ett konventionellt fordon, eftersom man måste ta hänsyn till försörjningen av elektrisk energi. Designprocessen involverar design av topologi, design av komponenter samt design av kontrollsystem. Idéen om att sammanfoga alla tre designfaser kallas systemnivådesign. På grund av komplexiteten är det tidsmässigt inte möjligt att evaluera samtliga möjliga designval. Därför behövs optimeringsalgoritmer för att snabba på processen. Olika typer av variabler berörs i de olika designfaserna och därför behövs olika algoritmer. I avhandlingen undersöks olika algoritmers robusthet för kontinuerliga och diskreta variabler samt deras prestanda mot en intern optimeringsplattform. Standardiserade testfall används för att validera algoritmerna vartefter algoritmerna görs mer effektiva och generella. Baserat på teoretiska och experimentella studier föreslås rekommendationer för val av algoritmer baserat på olika typer av variabler. Baserat på optimeringsplattformen introduceras flera olika optimeringskoordinationsarkitekturer för systemnivådesign, och samtidiga och samordnade koordinationsarkitekturer testas för ett specifikt industrifall i den andra delen av avhandlingen. Båda metoderna tycktes vara lovande enligt resultatet av testfallet, och de lyckades sänka konvergensperioden dramatiskt. Den använda fordonsmodellen var inte tillräckligt exakt för att bevisa vilken metod som är den överlägsna, men en mer exakt modell kan introduceras i framtiden för att underlätta en sådan slutsats.

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Lundin, Johan. "Flywheel in an all-electric propulsion system." Licentiate thesis, Uppsala universitet, Elektricitetslära, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-222030.

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Energy storage is a crucial condition for both transportation purposes and for the use of electricity. Flywheels can be used as actual energy storage but also as power handling device. Their high power capacity compared to other means of storing electric energy makes them very convenient for smoothing power transients. These occur frequently in vehicles but also in the electric grid. In both these areas there is a lot to gain by reducing the power transients and irregularities. The research conducted at Uppsala university and described in this thesis is focused on an all-electric propulsion system based on an electric flywheel with double stator windings. The flywheel is inserted in between the main energy storage (assumed to be a battery) and the traction motor in an electric vehicle. This system has been evaluated by simulations in a Matlab model, comparing two otherwise identical drivelines, one with and one without a flywheel. The flywheel is shown to have several advantages for an all-electric propulsion system for a vehicle. The maximum power from the battery decreases more than ten times as the flywheel absorbs and supplies all the high power fluxes occuring at acceleration and braking. The battery delivers a low and almost constant power to the flywheel. The amount of batteries needed decreases whereas the battery lifetime and efficiency increases. Another benefit the flywheel configuration brings is a higher energy efficiency and hence less need for cooling. The model has also been used to evaluate the flywheel functionality for an electric grid application. The power from renewable intermittent energy sources such as wave, wind and current power can be smoothened by the flywheel, making these energy sources more efficient and thereby competitive with a remaining high power quality in the electric grid.

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Chaudhari, Anita. "Thermodynamic analysis, modelling and control of a novel hybrid propulsion system." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9878.

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Stringent emission regulations imposed by governments and depleting fossil fuel reserves have promoted the development of the automotive industry towards novel technologies. Various types of hybrid power plants for transport and stationary applications have emerged. The methodology of design and development of such power plants varies according to power producing components used in the systems. The practical feasibility of such power plants is a pre-requisite to any further development. This work presents thermodynamic analysis and modelling of such a novel power plant, assesses its feasibility and further discusses the development of a suitable control system. The proposed system consists of a hybrid configuration of a solid oxide fuel cell and IC engine as the main power producing components. A reformer supplies fuel gas to the fuel cell while the IC engine is supplied with a liquid fuel. The excess fuel from the fuel cell anode and the oxygen-depleted air from cathode of the fuel cell are also supplied to the engine. This gas mixture is aspirated into the engine with the balance of energy provided by the liquid fuel. The fuel cell exhaust streams are used to condition the fuel in the engine to ensure minimum pollutants and improved engine performance. Both, fuel cell and engine share the load on the system. The fuel cell operates on a base load while the engine handles majority of the transient load. This system is particularly suitable for a delivery truck or a bus cycle. Models of the system components reformer, solid oxide fuel cell, IC engine and turbocharger were developed to understand their steady state and dynamic behaviour. These models were validated against sources of literature and used to predict the effect of different operating conditions for each component. The main control parameters for each component were derived from these models. A first law analysis of the system at steady state was conducted to identify optimum operating region, verify feasibility and efficiency improvement of the system. The results suggested reduced engine fuel consumption and a 10 % improvement in system efficiency over the conventional diesel engines. Further, a second law analysis was conducted to determine the key areas of exergy losses and the rational efficiency of the system at full load operating conditions. The results indicate a rational efficiency of 25.4 % for the system. Sensitivity to changes in internal exergy losses on the system work potential was also determined. The exergy analysis indicates a potential for process optimisation as well as design improvements. This analysis provides a basis for the development of a novel control strategy based on exergy analysis and finite-time thermodynamics. A dynamic simulation of the control oriented system model identified the transient response and control parameters for the system. Based on these results, control systems were developed based on feedback control and model predictive control theories. These controllers mainly focus on air and fuel path management within the system and show an improved transient response for the system. In a hierarchical control structure for the system, the feedback controllers or the model predictive controller can perform local optimisation for the system, while a supervisory controller can perform global optimisation. The objective of the supervisory controller is to determining the load distribution between the fuel cell and the engine. A development strategy for such a top-level supervisory controller for the system is proposed. The hybrid power plant proposed in this thesis shows potential for application for transport and stationary power production with reduced emissions and fuel consumption. The first and second law of thermodynamics can both contribute to the development of a comprehensive control system. This work integrates research areas of powertrain design, thermodynamic analysis and control design. The development and design strategy followed for such a novel hybrid power plant can be useful to assess the potential of other hybrid systems as well.

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Kumar, Sandeep. "Non-AXisymmetric Aerodynamic Design-Optimization System with Application for Distortion Tolerant Hybrid Propulsion." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1613749886763596.

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Lin, Qing. "Small-Signal Modeling and Stability Specification of a Hybrid Propulsion System for Aircrafts." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/103515.

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This work utilizes the small-signal impedance-based stability analysis method to develop stability assessment criteria for a single-aisle turboelectric aircraft with aft boundary-layer propulsion (STARC-ABL) system. The impedance-based stability analysis method outperforms other stability analysis methods because it does not require detailed information of individual components for system integration, therefore, a system integrator can just require the vendors to make the individual components meet the impedance specifications to ensure whole system stability. This thesis presents models of a generator, motor, housekeeping loads, and battery all with power electronics interface which form an onboard electrical system and analyzes the relationship between the impedance shape of each component and their physical design and control loop design. Based on the developed small-signal model of the turbine-generator-rectifier subsystem and load subsystem, this thesis analyzes the impact of electromechanical dynamics of the turbofan passed through the generator on the dc distribution system, concluding that the rectifier can mitigate the impact. Finally, to ensure the studied system stable operation during the whole flying profile, the thesis provides impedance specifications of the dc distribution system and verifies the specifications with several cases in time-domain simulations.<br>M.S.<br>Electric aircraft propulsion (EAP) technologies have been a trend in the aviation industry for their potential to reduce environmental emissions, increase fuel efficiency and reduce noise for commercial airplanes. Achieving these benefits would be a vital step towards environmental sustainability. However, the development of all-electric aircraft is still limited by the current battery technologies and maintenance systems. The single-aisle turboelectric aircraft with aft boundary-layer (STARC-ABL) propulsion concept is therefore developed by NASA aiming to bridge the gap between the current jet fuel-powered aircraft and future all-electric vehicles. The plane uses electric motors powered by onboard gas turbines and transfers the generated power to other locations of the airplane like the tail fan motor to provide distributed propulsion. Power electronics-based converter converts electricity in one form of electricity to another form, for example, from ac voltage to dc voltage. This conversion of power is very important in the whole society, from small onboard chips to Mega Watts level electrical power system. In the aircraft electrical power system context, power electronics converter plays an important role in the power transfer process especially with the recent trend of using high voltage dc (HVDC) distribution instead of conventional ac distribution for the advantage of increased efficiency and better voltage regulation. The power generated by the electric motors is in ac form. Power electronics converter is used to convert the ac power into dc power and transfer it to the dc bus. Because the power to drive the electric motor to provide distributed propulsion is also in ac form, the dc power needs to be converted back into ac power still through a power electronics converter. With a high penetration of power electronics into the onboard electrical power system and the increase of electrical power level, potential stability issues resulted from the interactions of each subsystem need to be paid attention to. There are mainly two stability-related studies conducted in this work. One is the potential cross-domain dynamic interaction between the mechanical system and the electrical system. The other is a design-oriented study to provide sufficient stability margin in the design process to ensure the electrical system’s stable operation during the whole flying profile. The methodology used in this thesis is the impedance-based stability analysis. The main analyzing process is to find an interface of interest first, then grouped each subsystem into a source subsystem and load subsystem, then extract the source impedance and load impedance respectively, and eventually using the Nyquist Criterion (or in bode plot form) to assess the stability with the impedance modeling results. The two stability-related issues mentioned above are then studied by performing impedance analysis of the system. For the electromechanical dynamics interaction study, this thesis mainly studies the rotor dynamics’ impact on the output impedance of the turbine-generator-rectifier system to assess the mechanical dynamics’ impact on the stability condition of the electrical system. It is found that the rotor dynamics of the turbine is masked by the rectifier; therefore, it does not cause stability problem to the pre-tuned system. For the design-oriented study, this thesis mainly explores and provides the impedance shaping guidelines of each subsystem to ensure the whole system's stable operation. It is found that the stability boundary case is at rated power level, the generator voltage loop bandwidth is expected to be higher than 300Hz, 60˚ to achieve a 6dB, 45˚ stability margin, and load impedance mainly depends on the motor-converter impedance.

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Nakka, Sai Krishna Sumanth. "Co-design of Hybrid-Electric Propulsion System for Aircraft using Simultaneous Multidisciplinary Dynamic System Design Optimization." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1602153187738909.

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Sellers, Jerry Jon. "Investigation into hybrid rockets and other cost-effective propulsion system options for small satellites." Thesis, University of Surrey, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.309201.

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Bücher zum Thema "Hybrid Propulsion System"

Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5.

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PPM and Other Propulsion R & T Conference (1997 Cleveland, Ohio). Physics & Process Modeling (PPM) and Other Propulsion R&T: Proceedings of the PPM and Other Propulsion R&T Conference held at the Cleveland Airport Marriott ... Cleveland, Ohio, May 1, 1997. National Aeronautics and Space Administration, Office of Management, Scientific and Technical Information Program, 1997.

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Bose, Bimal K. Advanced propulsion power distribution system for next generation electric/hybrid vehicle: Phase I, preliminary system studies : final report. National Aeronautics and Space Administration, Lewis Research Center, 1995.

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Miller, John M. Propulsion systems for hybrid vehicles. Institution of Electrical Engineers, 2008.

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Institution of Engineering and Technology and Knovel (Firm), eds. Propulsion systems for hybrid vehicles. 2nd ed. Institution of Engineering and Technology, 2010.

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Automotive Research and Design Company. Hybrid and electric vehicle propulsion systems. 3rd ed. Automotive Research and Design Co., 2005.

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Company, Automotive Research and Design. Hybrid and electric vehicle propulsion systems. 2nd ed. Automotive Research and Design Co., 2002.

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Weldon, Vincent. Design optimization of gas generator hybrid propulsion boosters. National Aeronautics and Space Administration, 1990.

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Rocker, M. Modeling on nonacoustic combustion instability in simulations of hybrid motor tests. National Aeronautics and Space Administration, Marshall Space Flight Center, 2000.

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Chernicoff, William P. Clean air program: Design guidelines for bus transit systems using electric and hybrid electric propulsion as an alternative fuel. Federal Transit Administration, Office of Research, Demonstration, and Innovation, 2003.

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Buchteile zum Thema "Hybrid Propulsion System"

Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "Optimal Control and System Optimization of Ground Vehicle Hybrid Drive System." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_5.

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Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "Architecture of the Ground Vehicle Hybrid Drive System." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_2.

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Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "Modeling and Simulation Technology for Ground Vehicle Hybrid Propulsion System." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_3.

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Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "The Nonlinear Programming Optimal Control of a Hybrid Drive System." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_6.

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Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "The Modeling and Identification of Lithium-Ion Battery System." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_4.

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Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "Application of Hybrid Drive System Modeling and Control for Wheeled Vehicles." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_7.

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Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "Application of Hybrid Drive System Modeling and Control for Tracked Vehicles." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_8.

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Zou, Yuan, Junqiu Li, Xiaosong Hu, and Yann Chamaillard. "Introduction." In Modeling and Control of Hybrid Propulsion System for Ground Vehicles. Springer Berlin Heidelberg, 2018. http://dx.doi.org/10.1007/978-3-662-53673-5_1.

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Gladkova, Olga I., Vadim V. Veltishev, and Sergey A. Egorov. "Development of an Information Control System for a Remotely Operated Vehicle with Hybrid Propulsion System." In Studies in Systems, Decision and Control. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-37841-7_17.

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Bancă, Gheorghe, Florian Ivan, Gheorghe Frățilă, and Valentin Nișulescu. "Modeling the Performances of a Vehicle Provided with a Hybrid Electric Diesel Propulsion System (HEVD)." In CONAT 2016 International Congress of Automotive and Transport Engineering. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-45447-4_46.

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Konferenzberichte zum Thema "Hybrid Propulsion System"

Sollazzo, Loredana, Sergio Pica, Gerardo Spera, Silvia Occhigrossi, Shila Shojaee, and Anna Notarantonio. "Hybrid Propulsion System for Satellite." In 31st AIAA International Communications Satellite Systems Conference. American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-5629.

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Chandler, Ashley, Brian Cantwell, and G. Hubbard. "Hybrid Propulsion for Solar System Exploration." In 47th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-6103.

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Landolfi, Olga, and Leone Martellucci. "New Propulsion System for Hybrid Vehicles." In International Pacific Conference On Automotive Engineering. SAE International, 1993. http://dx.doi.org/10.4271/931882.

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Sun, C., Y. Wang, and Z. Li. "Research on Hydrodynamic Performance of Hybrid Propulsion System." In Waterjet Propulsion 5. RINA, 2008. http://dx.doi.org/10.3940/rina.wp.2008.07.

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Mankbadi, Reda, Chad Campbell, Eric Dittman, et al. "Design of a Hybrid Electrical Propulsion System." In 52nd AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference. American Institute of Aeronautics and Astronautics, 2011. http://dx.doi.org/10.2514/6.2011-1986.

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Site, V. Delle, O. Landolfi, and L. Martellucci. "Hybrid Propulsion System with Continuously Variable Transmission." In SAE Brasil '94. SAE International, 1994. http://dx.doi.org/10.4271/942389.

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Volchenko, V. G., and A. N. Ser’yoznov. "Hybrid and electric propulsion system of aircrafts." In INTERNATIONAL CONFERENCE ON THE METHODS OF AEROPHYSICAL RESEARCH (ICMAR 2020). AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0052622.

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Simurda, Laura, and Greg Zilliac. "High Performance Hybrid Propulsion System for Small Satellites." In 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference. American Institute of Aeronautics and Astronautics, 2013. http://dx.doi.org/10.2514/6.2013-3635.

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Yerpes, Ariadna, Ruben Manzano, Pedro Conejo, and Emilio Jimenez. "Talgo Hybrid Train: Maximum interoperability in propulsion system." In 2012 Electrical Systems for Aircraft, Railway and Ship Propulsion (ESARS). IEEE, 2012. http://dx.doi.org/10.1109/esars.2012.6387458.

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Barcaro, Massimo, Nicola Bianchi, and Silverio Bolognani. "Hybrid electric propulsion system using submersed SPM machine." In 2008 International Conference on Electrical Machines (ICEM). IEEE, 2008. http://dx.doi.org/10.1109/icelmach.2008.4800089.

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Berichte der Organisationen zum Thema "Hybrid Propulsion System"

Richter, Tim, Lee Slezak, Chris Johnson, Henry Young, and Dan Funcannon. Advanced Hybrid Propulsion and Energy Management System for High Efficiency, Off Highway, 240 Ton Class, Diesel Electric Haul Trucks. Office of Scientific and Technical Information (OSTI), 2008. http://dx.doi.org/10.2172/1092149.

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Jiang, Yuxiang. Unsettled Technology Areas in Electric Propulsion Systems. SAE International, 2021. http://dx.doi.org/10.4271/epr2021012.

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Annotation:

Electric vehicle (EV) transmission technology—crucial for battery electric vehicles (BEVs) and hybrid electric vehicles (HEVs)—is developing quickly and customers want good performance at a low cost. Single-speed gearboxes are popular in electric drive systems due to their simple and cost-effective configuration. However, multispeed gearboxes are being taken to market due to their higher low-speed torque, dynamic performance, and energy efficiency. Unsettled Technology Areas in Electric Propulsion Systems reviews the economic drivers, existing techniques, and current challenges of EV transmission technology—including torque interruption during shifting; thermal and sealing issues; and noise, vibration, and harshness (NVH). This report discusses the pros and cons for both single-speed and multispeed gearboxes with numerical analysis.

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Jivkov, Venelin, and Vatko Draganov. Controlled Friction Clutch for Hybrid Propulsion Mechanical Systems with Kinetic Energy Accumulator. "Prof. Marin Drinov" Publishing House of Bulgarian Academy of Sciences, 2020. http://dx.doi.org/10.7546/crabs.2020.07.13.

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Vargas, J. V. Modeling and Optimization of Renewable and Hybrid Fuel Cell Systems for Space Power and Propulsion. Defense Technical Information Center, 2010. http://dx.doi.org/10.21236/ada563592.

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Klett, James William, and Jim Conklin. Final Report: Use of Graphite Foam as a Thermal Performance Enhancement of Heavy Hybrid Propulsion Systems. Office of Scientific and Technical Information (OSTI), 2011. http://dx.doi.org/10.2172/1015677.

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Heavy vehicle hybrid propulsion systems R and D program plan, FY 2000-2005. Office of Scientific and Technical Information (OSTI), 2000. http://dx.doi.org/10.2172/782848.

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