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Marine Propulsors

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ISBN: 9783038972020 9783038972037 Year: Pages: 354 DOI: 10.3390/books978-3-03897-203-7 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Environmental Technology --- Transportation
Added to DOAB on : 2018-10-10 12:11:50
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This book provides an update on the state of the art of hydrodynamic aspects of marine propellers and turbines, covering predictions using numerical and experimental methods, where the numerical methods comprise both potential flow panel methods, Navier–Stokes solvers and mixed methods. Open and ducted propellers, as well as azimuthing thrusters are represented, as well as operation in steady conditions, waves and off-design conditions.The book consists of 16 peer-reviewed scientific papers previously published in Journal of Marine Science and Engineering.

Wheeled Mobility Biomechanics

Authors: ---
Book Series: Frontiers Research Topics ISSN: 16648714 ISBN: 9782889199389 Year: Pages: 91 DOI: 10.3389/978-2-88919-938-9 Language: English
Publisher: Frontiers Media SA
Subject: General and Civil Engineering --- Biotechnology
Added to DOAB on : 2016-01-19 14:05:46
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For the manual wheelchair (MWC) user, loss of lower extremity function often places the burden for mobility and activities of daily living on the upper extremities. This e-book on Wheeled Mobility Biomechanics contains current research that provides insights into the mechanical demands and performance techniques during tasks associated with MWC. Our intent was to contribute to advancing the knowledge regarding the variables that promote or hinder an individual’s capacity to handle the daily manual wheeled mobility demands and gain greater insights into upper extremity loading consequences, predictors of pain onset and injury, and ultimately identify strategies for preserving health and functional mobility for the MWC user.

Sequentieller Versuch zur HiL-unterstützten Validierung hybrider Antriebssysteme mit gekoppelten Antriebseinheiten

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Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731507529 Year: Volume: 58 Pages: XIV, 153 p. DOI: 10.5445/KSP/1000078697 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
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Diesel-hybrid propulsion systems for railcars are able to reduce fuel consumption and emissions in relation to conventional diesel railcars. To design such a propulsion system requires the use of simulation and experimental methods. A validation procedure is developed, that enables to test the propulsion system in several smaller tests with single powertrains.

Auslegung eines asynchronen Langstatorlinearmotors mit großem Luftspalt als Straßenbahnantrieb

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Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731504184 Year: Volume: 41 Pages: XXIII, 241 p. DOI: 10.5445/KSP/1000048194 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-30 20:02:01
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The present paper focuses on the concept of a linear motor for tram operation without overhead lines. The type of motor selected is an asynchronous long-stator linear motor without an adjuster. The resulting big air gap is the biggest challenge in design. First, the impacts of the big air gap are studied analytically. Then, an asynchronous long-stator linear motor for driving the tram is designed using the FE method. The simulation models are validated using a linear motor demonstrator.

Intelligentes Gesamtmaschinenmanagement für elektrische Antriebssysteme

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Book Series: Karlsruher Schriftenreihe Fahrzeugsystemtechnik / Institut für Fahrzeugsystemtechnik ISSN: 18696058 ISBN: 9783731507741 Year: Volume: 60 Pages: XVI, 150 p. DOI: 10.5445/KSP/1000081063 Language: GERMAN
Publisher: KIT Scientific Publishing
Subject: Technology (General)
Added to DOAB on : 2019-07-28 18:37:01
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Innovative electric propulsion systems are increasingly applied to off-highway machines, to gain efficiency optimization of the work process. This book focuses on the aspect of work process optimization and achieves forward-looking results through the use of intelligent, adaptive overall machine management.

Practice and Innovations in Sustainable Transport

Authors: --- ---
ISBN: 9783039285488 / 9783039285495 Year: Pages: 118 DOI: 10.3390/books978-3-03928-549-5 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Science (General) --- Physics (General)
Added to DOAB on : 2020-06-09 16:38:57
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The book continues with an experimental analysis conducted to obtain accurate and complete information about electric vehicles in different traffic situations and road conditions. For the experimental analysis in this study, three different electric vehicles from the Edinburgh College leasing program were equipped and tracked to obtain over 50 GPS and energy consumption data for short distance journeys in the Edinburgh area and long-range tests between Edinburgh and Bristol. In the following section, an adaptive and robust square root cubature Kalman filter based on variational Bayesian approximation and Huber’s M-estimation is proposed to accurately estimate state of charge (SOC), which is vital for safe operation and efficient management of lithium-ion batteries. A coupled-inductor DC-DC converter with a high voltage gain is proposed in the following section to match the voltage of a fuel cell stack to a DC link bus. Finally, the book presents a review of the different approaches that have been proposed by various authors to mitigate the impact of electric buses and electric taxis on the future smart grid.

Future Space-Transport-System Components under High Thermal and Mechanical Loads

Authors: --- --- --- --- et al.
Book Series: Notes on Numerical Fluid Mechanics and Multidisciplinary Design ISBN: 9783030538477 Year: Pages: 419 DOI: 10.1007/978-3-030-53847-7 Language: English
Publisher: Springer Nature
Subject: Agriculture (General)
Added to DOAB on : 2020-11-19 00:20:02
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This open access book presents the findings of Collaborative Research Center Transregio 40 (TRR40), initiated in July 2008 and funded by the German Research Foundation (DFG). Gathering innovative design concepts for thrust chambers and nozzles, as well as cutting-edge methods of aft-body flow control and propulsion-component cooling, it brings together fundamental research undertaken at universities, testing carried out at the German Aerospace Center (DLR) and industrial developments from the ArianeGroup. With a particular focus on heat transfer analyses and novel cooling concepts for thermally highly loaded structures, the book highlights the aft-body flow of the space transportation system and its interaction with the nozzle flow, which are especially critical during the early phase of atmospheric ascent. Moreover, it describes virtual demonstrators for combustion chambers and nozzles, and discusses their industrial applicability. As such, it is a timely resource for researchers, graduate students and practitioners.

Plug-in Hybrid Electric Vehicle (PHEV)

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ISBN: 9783039214532 9783039214549 Year: Pages: 230 DOI: 10.3390/books978-3-03921-454-9 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 11:49:15
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Climate change, urban air quality, and dependency on crude oil are important societal challenges. In the transportation sector especially, clean and energy efficient technologies must be developed. Electric vehicles (EVs) and plug-in hybrid electric vehicles (PHEVs) have gained a growing interest in the vehicle industry. Nowadays, the commercialization of EVs and PHEVs has been possible in different applications (i.e., light duty, medium duty, and heavy duty vehicles) thanks to the advances in energy storage systems, power electronics converters (including DC/DC converters, DC/AC inverters, and battery charging systems), electric machines, and energy efficient power flow control strategies. This book is based on the Special Issue of the journal Applied Sciences on “Plug-In Hybrid Electric Vehicles (PHEVs)”. This collection of research articles includes topics such as novel propulsion systems, emerging power electronics and their control algorithms, emerging electric machines and control techniques, energy storage systems, including BMS, and efficient energy management strategies for hybrid propulsion, vehicle-to-grid (V2G), vehicle-to-home (V2H), grid-to-vehicle (G2V) technologies, and wireless power transfer (WPT) systems.

Keywords

battery power --- convex optimization --- dynamic programming --- engine-on power --- plug-in hybrid electric vehicle --- simulated annealing --- electric vehicle --- open-end winding --- dual inverter --- voltage vector distribution --- power sharing --- energy management --- range-extender --- CO2 --- air quality --- mobility needs --- LCA --- Paris Agreement --- hybrid energy storage system --- lithium-ion battery --- lithium-ion capacitor --- lifetime model --- power distribution --- state of health estimation --- adaptive neuron-fuzzy inference system (ANFIS) --- group method of data handling (GMDH) --- artificial neural network (ANN) --- electric vehicles (EVs) --- capacity degradation --- lithium-ion battery --- time-delay input --- interleaved multiport converte --- multi-objective genetic algorithm --- hybrid electric vehicles --- losses model --- wide bandgap (WBG) technologies --- Energy Storage systems --- LCA --- Well-to-Wheel --- electric vehicle --- plug-in hybrid --- electricity mix --- consequential --- attributional --- marginal --- system modelling --- energy system --- meta-analysis --- parallel hybrid electric vehicle --- regenerative braking --- fuel consumption characteristics --- energy efficiency --- state of charge --- lithium polymer battery --- electric vehicle --- Plugin Hybrid electric vehicle --- Li-ion battery --- modelling --- measurements --- state of charge --- strong track filter --- modified one-state hysteresis model --- Li(Ni1/3Co1/3Mn1/3)O2 battery --- energy management strategy --- Markov decision process (MDP) --- plug-in hybrid electric vehicles (PHEVs) --- Q-learning (QL) --- reinforcement learning (RL) --- novel propulsion systems --- emerging power electronics --- including wide bandgap (WBG) technology --- emerging electric machines --- efficient energy management strategies for hybrid propulsion systems --- energy storage systems --- life-cycle assessment (LCA)

Permanent Magnet Synchronous Machines

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ISBN: 9783039213504 9783039213511 Year: Pages: 282 DOI: 10.3390/books978-3-03921-351-1 Language: English
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2019-12-09 11:49:15
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Interest in permanent magnet synchronous machines (PMSMs) is continuously increasing worldwide, especially with the increased use of renewable energy and the electrification of transports. This book contains the successful submissions of fifteen papers to a Special Issue of Energies on the subject area of “Permanent Magnet Synchronous Machines”. The focus is on permanent magnet synchronous machines and the electrical systems they are connected to. The presented work represents a wide range of areas. Studies of control systems, both for permanent magnet synchronous machines and for brushless DC motors, are presented and experimentally verified. Design studies of generators for wind power, wave power and hydro power are presented. Finite element method simulations and analytical design methods are used. The presented studies represent several of the different research fields on permanent magnet machines and electric drives.

Keywords

PMSM (permanent magnet synchronous motor) --- DB-DTFC (deadbeat-direct torque and flux control) --- torque control --- stability --- permanent-magnet machine --- brushless machine --- Vernier machine --- flux switching machine --- multiphase machine --- outer rotor --- electric vehicle --- interior permanent magnet synchronous machines --- magnetic reluctance network --- brushless dc motor --- phase-advanced method --- winding inductance --- sub-fractional slot-concentrated winding --- field weakening --- periodic timer interrupt --- Brushless DC motors --- current ripples --- current spikes --- modeling --- back electromotive force --- R-C filter --- cogging torque --- permanent magnet synchronous generator --- small wind turbines --- finite element method --- renewable energy --- energy conversion --- finite element analysis --- pulse width modulation --- permanent magnet synchronous generator --- wind generator --- MPC --- PMSM --- vector control --- speed tracking --- brushless DC (BLDC) motor --- sensorless motor --- commutation error compensation --- free-wheeling period --- permanent magnet synchronous motor (PMSM) --- sliding mode observer (SMO) --- parameter perturbation --- predictive current control (PCC) --- digital simulation --- motor drives --- interior permanent-magnet machines --- finite-element analysis --- modeling --- automotive applications --- electric vehicle (EV) --- hybrid electric vehicle (HEV) --- mathematical model --- saturation --- coils --- design tools --- energy efficiency --- linear generator --- power control --- stator --- wave power --- permanent magnet synchronous generator --- electrical machine design --- permanent magnet material --- bulk electric system --- condition monitoring --- electrical signature analysis --- fault diagnosis --- predictive maintenance --- synchronous generator --- permanent magnet synchronous machine (PMSM) --- flying start --- sensorless control --- permanent magnet synchronous generator --- permanent magnet synchronous motor --- electric propulsion systems --- renewable energy --- energy conversion

Power Electronics and Power Quality

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ISBN: 9783039283583 / 9783039283590 Year: Pages: 336 DOI: 10.3390/books978-3-03928-359-0 Language: eng
Publisher: MDPI - Multidisciplinary Digital Publishing Institute
Subject: Technology (General) --- General and Civil Engineering
Added to DOAB on : 2020-06-09 16:38:57
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Power quality (PQ) is receiving more and more attention from consumers, distribution system operators, transmission system operators, and other entities related to electrical power systems. As PQ problems have direct implications for business productivity, causing high economic losses, the research and development monitoring technologies and power electronics solutions that ensure the PQ of the power systems are matters of utmost importance. This book is a collection of high quality papers published in the “Power Electronics and Power Quality” Special Issue of the journal Energies. It reflects on the latest investigations and the new trends in this field.

Keywords

high speed maglev --- long-stator synchronous motor --- propulsion inverter control system position estimator --- distorted grid conditions --- SGDFT --- Lagrange-interpolation method --- frequency adaption --- SC --- primary neutral integrity --- multi-grounded neutral (MGN) system --- neutral integrity detection --- passive method --- computer simulation --- modeling --- microinverter --- photovoltaic systems --- state-space model --- power inverter --- voltage source inverter --- four-leg inverter --- cost-effectiveness --- current control --- pulse width modulation --- indirect matrix converter (IMC) --- input filter --- input power factor --- matrix converter (MC) --- space vector modulation (SVM) --- power quality --- microgrid (MG) --- renewable power generation --- superconducting magnetic energy storage (SMES) --- energy shaping passivity (ESP)-based control --- power semiconductor device --- temperature --- switching transients --- variation in voltage --- half-bridge inverters --- digital control --- hysteresis current control --- switching frequency --- optimization --- static var compensator --- series active filter --- thyristor-controlled reactor --- phase-leading capacitor --- hybrid static var compensator --- static synchronous compensator --- hybrid active filter --- Pulse Width Modulation (PWM) --- Field Programmable Gate Array (FPGA) --- Total Harmonic Distortion (THD) --- harmonics --- event detection --- power quality --- histogram --- machine learning --- wavelet transform --- continuous particle swarm optimization (CPSO) --- overcurrent relay coordination (OCR) --- time multiplier setting (TMS) --- power system protection --- protection relay --- Simulink --- Matlab --- Omicron CMC 256plus --- power quality --- enerlyzer --- comtrade --- distance protection --- Shunt Active Power Filter --- digital control --- harmonics --- multilevel converter --- power quality --- p-q theory --- robust control --- DC-DC converter --- constant power load --- low voltage direct-current residential microgrid --- Multiterminal HVDC --- CSC --- FBMMC --- MMC --- Hybrid HVDC --- Full-bridge --- power control --- voltage control --- DC short-circuit handling --- hybrid power filter --- power quality --- reactive power

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