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Electrical machines and drives dominate our everyday lives. This is due to their numerous applications in industry, power production, home appliances, and transportation systems such as electric and hybrid electric vehicles, ships, and aircrafts. Their development follows rapid advances in science, engineering, and technology. Researchers around the world are extensively investigating electrical machines and drives because of their reliability, efficiency, performance, and fault-tolerant structure. In particular, there is a focus on the importance of utilizing these new trends in technology for energy saving and reducing greenhouse gas emissions. This Special Issue will provide the platform for researchers to present their recent work on advances in the field of electrical machines and drives, including special machines and their applications; new materials, including the insulation of electrical machines; new trends in diagnostics and condition monitoring; power electronics, control schemes, and algorithms for electrical drives; new topologies; and innovative applications.
fault size --- inter-laminar fault --- localized losses --- thermographic measurement --- thermal-electric coupling --- axial flux --- demagnetization --- finite element analysis --- permanent magnet --- static eccentricity --- synchronous generator --- power loss minimization --- speed control drive systems --- efficiency measurement --- IPMSM --- additive manufacturing --- three-dimensional printing --- topology optimization --- magnetic materials --- soft magnetic materials --- permanent magnets --- electrical machines --- torque ripple --- 6th harmonic --- induction motor --- AC machine --- PWM inverter --- space phasor modulation --- electric motor --- interior permanent magnet --- reluctance --- MMF-permeance --- winding function --- predictive maintenance --- digital twin --- artificial intelligence --- Industry 4.0 --- data handling --- life cycle --- electric machines --- electromagnetic analysis --- electromagnetic measurements --- core losses --- rotor flux linkage --- modular stator --- oriented steel --- flux-injecting probes --- insulation system --- partial discharges --- capacitive model --- MATLAB/Simulink --- flashover voltage --- epoxy resin --- matrix-converter --- input AC filter design --- PMSM --- predictive control --- electrical drives --- energy efficiency --- energy-saving --- power quality --- current signals --- stray flux signals --- LDA --- automatic fault diagnosis --- broken rotor bars --- soft-starters
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This Special Issue deals with improvements in the energy efficiency of electric devices, machines, and drives, which are achieved through improvements in the design, modelling, control, and operation of the system. Properly sized and placed coils of a welding transformer can reduce the required iron core size and improve the efficiency of the welding system operation. New structures of the single-phase field excited flux switching machine improve its performance in terms of torque, while having higher back-EMF and unbalanced electromagnetic forces. A properly designed rotor notch reduces the torque ripple and cogging torque of interior permanent magnet motors for the drive platform of electric vehicles, resulting in lower vibrations and noise. In the field of modelling, the torque estimation of a Halbach array surface permanent magnet motor with a non-overlapping winding layout was improved by introducing an analytical two-dimensional subdomain model. A general method for determining the magnetically nonlinear two-axis dynamic models of rotary and linear synchronous reluctance machines and synchronous permanent magnet machines is introduced that considers the effects of slotting, mutual interaction between the slots and permanent magnets, saturation, cross saturation, and end effects. Advanced modern control solutions, such as neural network-based model reference adaptive control, fuzzy control, senseless control, torque/speed tracking control derived from the 3D non-holonomic integrator, including drift terms, maximum torque per ampere, and maximum efficiency characteristics, are applied to improve drive performance and overall system operation.
interior permanent magnet synchronous motor --- torque ripple --- cogging torque --- electric vehicle --- notch --- mathematical model --- Halbach Array --- surface permanent magnet --- magnetic vector potential --- torque --- in-wheel electric vehicle --- independent 4-wheel drive --- torque distribution --- fuzzy control --- traction control --- active yawrate control --- energy efficiency --- industry --- water circuits --- OpenModelica --- optimisation --- induction motor --- speed estimation --- model reference adaptive system --- kalman filter --- luenberger observer --- flux switching machine --- modular rotor --- non-overlap winding --- magnetic flux analysis --- iron losses --- copper loss --- stress analysis --- finite element method --- magnetic loss --- maximum efficiency (ME) characteristic --- maximum torque per ampere (MTPA) characteristic --- modeling --- permanent magnet synchronous machine (PMSM) --- sensorless control --- synchronous machines --- dynamic models --- nonlinear magnetics --- parameter estimation --- DC-DC converter --- resistance spot welding --- transformer --- efficiency --- dynamic power loss --- design --- induction machines --- nonlinear control --- torque/speed control
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This book offers a collection of 30 scientific papers which address the problems associated with the use of power electronic converters in renewable energy source-based systems. Relevant problems associated with the use of power electronic converters to integrate renewable energy systems to the power grid are presented. Some of the covered topics relate to the integration of photovoltaic and wind energy generators into the rest of the system, and to the use of energy storage to mitigate power fluctuations, which are a characteristic of renewable energy systems. The book provides a good overview of the abovementioned topics.
n/a --- washout filter --- turbine and generator --- unbalanced power grid --- PV --- transient dynamics --- multi-input single output (MISO) --- permanent magnet synchronous generator (PMSG) --- static frequency characteristics --- impedance analysis --- FACTS devices --- coordinated control --- improved additional frequency control --- experiment --- resonant controller --- two-stage photovoltaic power --- voltage cancellation --- energy --- power matching --- LCL filter --- adaptive-MPPT (maximum power point tracking) --- VSC --- active power filter --- perturb and observe --- coordination control --- voltage-type control --- multiple VSGs --- wind power prediction --- linear quadratic regulator --- multiport converter (MPC) --- grid support function --- power ripple elimination --- adaptive resonant controller --- phase space reconstruction --- sliding mode control --- impedance emulation --- photovoltaic systems --- grid-connected converter --- SVM --- photovoltaic generators --- power grid --- active front-end converter --- THD --- type-4 wind turbine --- inertia --- ROCOF --- microgrid --- coupled oscillators --- multilevel power converter --- DC-AC power converters --- internal model --- back-to-back converter --- duty-ratio constraints --- selective harmonic mitigation --- parallel inverters --- discontinuous conduction mode --- droop control --- step size --- grid-connected --- inverter --- short-circuit fault --- energy router --- oscillation mitigation --- improved-VSG (virtual synchronous generator) --- source and load impedance --- synchronverter --- digital signal processor (DSP) TMS320F28335 --- operation optimization --- battery-energy storage --- generator speed control --- electrical power generation --- virtual impedance --- weak grid --- doubly-fed induction generator --- grid synchronization --- Energy Internet --- open circuit voltage --- state-of-charge balancing --- renewable power system --- control strategies --- adaptive notch filter (ANF) --- renewable energy --- hardware in the loop (HIL) --- energy storage --- microgrids --- inertia and damping characteristics --- electric vehicle --- multi-energy complementary --- static compensator --- stability --- battery energy storage system --- power-hardware-in- the-loop --- electricity price --- notch filter --- time series --- distorted grid --- oscillation suppression --- phase-locked loop (PLL) --- modules --- organic Rankine cycle --- failure zone --- Opal-RT Technologies® --- distributed generation --- modular multilevel converter --- governor --- microgrid (MG) --- second-life battery --- thermoelectric generator --- stability analysis --- wind energy system --- variable coefficient regulation --- single ended primary inductor converter (SEPIC) --- error --- soft switching --- power electronics --- PLL --- SPWM --- virtual synchronous generator --- perturbation frequency --- phase shifted --- grid-connected inverter --- cloud computing --- low inertia --- boost converter --- impedance reshaping --- small-signal and transient stability --- speed control --- multivariate linear regression --- photovoltaic --- adaptive control --- frequency regulation --- variable power tracking control --- power converters --- maximum power point tracking --- virtual admittance --- synchronization --- peak-current-mode control --- dynamic modeling --- discontinuous operation mode --- demand response
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In a modern technological society, electronic engineering and design innovations are both academic and practical engineering fields that involve systematic technological materialization through scientific principles and engineering designs. Engineers and designers must work together with a variety of other professionals in their quest to find systems solutions to complex problems. Rapid advances in science and technology have broadened the horizons of engineering while simultaneously creating a multitude of challenging problems in every aspect of modern life. Current research is interdisciplinary in nature, reflecting a combination of concepts and methods that often span several areas of mechanics, mathematics, electrical engineering, control engineering, and other scientific disciplines. In addition, the 2nd IEEE International Conference on Knowledge Innovation and Invention 2019 (IEEE ICKII 2019) was held in Seoul, South Korea, on 12–15 July, 2019. This book, “Intelligent Electronic Devices”, includes 13 excellent papers form 260 papers presented in this conference about intelligent electronic devices. The main goals of this book were to encourage scientists to publish their experimental and theoretical results in as much detail as possible and to provide new scientific knowledge relevant to the topics of electronics.
wearable robot --- electrical circuits and devices --- threshold voltage --- broadcast circuit --- dual-input converter --- built-in self-test --- n-channel lateral diffused MOSFET (nLDMOS) --- multi-robots --- current-voltage characteristics --- actuator --- electromagnetic interference --- sound recognition module --- brushless DC motor --- tabu search --- transmission-line pulse system (TLP system) --- skeletal feature representation --- communications and information processing --- 180-degree conduction --- mosquitoes --- regions with convolutional neural network (R-CNN) --- oscillator --- secondary freeform lens device (SFLD) --- low-dosed --- ZnO-based nanowires --- adaptive network-based fuzzy inference system (ANFIS) --- galvanic isolation --- lateral diffusion MOS (LDMOS) --- non-uniform conduction --- photoluminescence properties --- Aedes albopictus --- test pattern generation --- stearic --- high-definition multimedia interface --- sensorless motor drive --- PCB layout --- leakage energy recycling --- latchup (LU) --- Aedes aegypti --- secondary breakdown current (It2) --- 6-DOF robot arm --- lower limb exoskeleton --- as low as diagnostically acceptable (ALADA) --- voltage-controlled oscillator --- Eu3+ and In3+ ions --- electromagnetic lock --- computer science and engineering --- holding voltage (Vh) --- low cost --- voltage clamping --- cone-beam computerized tomography (CBCT) --- selective anatomy analytic iteration reconstruction (SA2IR) --- action quality assessment --- diagnostic ability --- high voltage gain --- laser pointer --- sparse projections --- speed control --- multiple simple current mirror --- human activity analysis --- path programming --- negative differential resistance --- drift region --- electrostatic discharge (ESD) --- radiation resistance --- hydrothermal method
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Based on 19 high-quality articles, this Special Issue presents methods for further improving the currently achievable recycling rate, product quality in terms of focused elements, and approaches for the enhanced mobilization of lithium, graphite, and electrolyte components. In particular, the target of early-stage Li removal is a central point of various research approaches in the world, which has been reported, for example, under the names early-stage lithium recovery (ESLR process) with or without gaseous CO2 and supercritical CO2 leaching (COOL process). Furthermore, many more approaches are present in this Special Issue, ranging from robotic disassembly and the dismantling of Li‐ion batteries, or the optimization of various pyro‐ and hydrometallurgical as well as combined battery recycling processes for the treatment of conventional Li‐ion batteries, all the way to an evaluation of the recycling on an industrial level. In addition to the consideration of Li distribution in compounds of a Li2O-MgO-Al2O3-SiO2-CaO system, Li recovery from battery slags is also discussed. The development of suitable recycling strategies of six new battery systems, such as all-solid-state batteries, but also lithium–sulfur batteries, is also taken into account here. Some of the articles also discuss the fact that battery recycling processes do not have to produce end products such as high-purity battery materials, but that the aim should be to find an “entry point” into existing, proven large-scale industrial processes. Participants in this Special Issue originate from 18 research institutions from eight countries.
Technology: general issues --- History of engineering & technology --- Mining technology & engineering --- lead-acid battery recycling --- pyrite cinder treatment --- lead bullion --- sulfide matte --- SO2 emissions --- pilot plant --- environmental technologies --- waste treatment --- recycling --- spent lithium-ion batteries --- recycling chain --- process stages --- unit processes --- industrial recycling technologies --- mechanical treatment --- slag cleaning --- cobalt --- nickel --- manganese --- lithium-ion battery --- circular economy --- batteries --- reuse --- disassembly --- safety --- lithium minerals --- lithium slag characterization --- thermochemical modeling --- critical raw materials --- smelting --- lithium --- graphite --- mechanical processing --- pyrometallurgy --- thermal treatment --- pyrolysis --- hydrometallurgy --- precipitation --- oxalic acid --- mixed oxalate --- battery recycling --- lithium–sulfur batteries --- metallurgical recycling --- metal recovery --- recycling efficiency --- lithium-ion batteries --- all-solid-state batteries --- slag --- leaching --- dry digestion --- fractionation --- tubular centrifuge --- rotational speed control --- particle size analysis --- lithium iron phosphate --- LFP --- carbon black --- direct battery recycling --- recovery --- thermodynamic modeling --- engineered artificial minerals (EnAM) --- melt experiments --- PXRD --- EPMA --- manganese recovery --- solvent extraction --- D2EHPA --- factorial design of experiments --- lithium-ion batteries (LIBs) --- lithium removal --- phosphorous removal --- recovery of valuable metals --- carbonation --- lithium phase transformation --- autoclave --- supercritical CO2 --- X-ray absorption near edge structure (XANES) --- powder X-ray diffraction (PXRD) --- electron probe microanalysis (EPMA) --- lithium recycling --- lithium batteries --- black mass --- LIB --- mechanical recycling processes --- battery generation --- solid state batteries --- robotic disassembly --- electric vehicle battery --- task planner --- n/a --- lithium-sulfur batteries
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