Search results:
Found 4
Listing 1  4 of 4 
Sort by

Choose an application
There is overwhelming evidence, from laboratory experiments, observations, and computational studies, that coherent structures can cause intermittent transport, dramatically enhancing transport. A proper description of this intermittent phenomenon, however, is extremely difficult, requiring a new nonperturbative theory, such as statistical description. Furthermore, multiscale interactions are responsible for inevitably complex dynamics in strongly nonequilibrium systems, a proper understanding of which remains a main challenge in classical physics. As a remarkable consequence of multiscale interaction, a quasiequilibrium state (the socalled selforganisation) can however be maintained. This special issue aims to present different theories of statistical mechanics to understand this challenging multiscale problem in turbulence. The 14 contributions to this Special issue focus on the various aspects of intermittency, coherent structures, selforganisation, bifurcation and nonlocality. Given the ubiquity of turbulence, the contributions cover a broad range of systems covering laboratory fluids (channel flow, the Von Kármán flow), plasmas (magnetic fusion), laser cavity, wind turbine, air flow around a highspeed train, solar wind and industrial application.
pipe flow boundary layer  turbulent transition  large eddy simulation  channel flow  kinetic theory  fluid dynamics  turbulence  selforganisation  shear flows  coherent structures  turbulence  stochastic processes  Langevin equation  FokkerPlanck equation  information length  trailingedge flap  control strategy  floating wind turbine  turbulence  free vortex wake  nonlocal theory  Lévy noise  Tsallis entropy  fractional Fokker–Plank equation  anomalous diffusion  hybrid (U)RANSLES  IDDES methodology  attached and separated flows  complex dynamics  microcavity laser  spatiotemporal chaos  turbulent boundary layer  low speed streaks  magnetic confinement fusion  turbulence  heat transport  Tjunction  denoise  coherent structure  continuous wavelet transform  solar wind  scaling properties  fractals  chaos  turbulence  intermittency  multifractal  thermodynamics  drop breakage  drop coalescence  local intermittency  turbulent flow  population balance equation  high efficiency impeller  Rushton turbine  energy cascade  bifurcations  Lyapunov theory  turbulence  statistical mechanics  intermittency  coherent structure  multiscale problem  selforganisation  bifurcation  nonlocality  scaling  multifractal
Choose an application
HVAC systems, load shifting, indoor climate, and energy and ventilation performance analyses are the key topics when improving energy performance in new and renovated buildings. This development has been boosted by the recently established nearly zero energy building requirements that will soon be in use in all EU Member States, as well as similar longterm zero energy building targets in Japan, the US, and other countries. The research covered in this Special Issue provides evidence of how new technical solutions have worked, in practice, in new or renovated buildings, and also discusses problems and how solutions should be further developed. Another focus is on the more detailed calculation methods needed for the correct design and sizing of dedicated systems, and for accurate quantification of energy savings. Occupant behavior and building operation is also examined, in order to avoid common performance gaps between calculated and measured performance. These topics demonstrate the challenge of high performance buildings as, in the end, comfortable buildings with good indoor climate which are easy and cheap to operate and maintain are expected by end customers. Ventilation performance, heating and cooling, sizing, energy predictions and optimization, load shifting, and field studies are some of the key topics in this Special Issue, contributing to the future of high performance buildings with reliable operation.
Jaya algorithm  smart grid  optimal energy management  demand response  demand side management  indoor temperature after renovation  electricity use  DHW energy use  user behavior  standard use  energy performance modeling  gray box  satellitebased solar radiation data  meteorological reanalysis data  ISO 520161  energy efficiency  HVAC systems  chiller plants  chiller performance  COP  datadriven analysis  energy  building  ventilation  cooling  outdoor air  air jet  personalized ventilation  skin temperature  CFD  thermal analysis  corner impinging jet  mixing ventilation  displacement ventilation  tracer gas  air exchange effectiveness  local air change effectiveness  draught rate  Monte Carlo method  ISO 7730  TRNSYS  greenhouse  indoor temperature uniformity  multiple sensor nodes  qualitative control  corner impinging jet  corner mixing ventilation  hybrid displacement device  heating mode  thermal comfort  air exchange effectiveness  local air change effectiveness  draught rate,  downdraught  smart buildings  smart readiness indicator  energy efficiency  energy performance of buildings directive  energy flexibility  load shifting  demand response  building energy simulation  occupant behavior  energy performance  indoor climate  retirement home  user input data  condenser evaporative precooling  rooftop air conditioners  building energy modelling  control strategy  ground source heat pump  heating power  sizing  DHW heating  space heating  alternate operation  daylight  existing buildings  daylight factor  daylight simulations  daylight survey  energy efficiency  student dormitories  Indoor Environmental Quality (IEQ), ProGETonE H2020  in situ measurements  monitoring measurements  energy signature  indoor air quality  stratification  basketball hall  CFD  field measurement  single room ventilation unit  building pressure condition  stack effect  wind pressure  ventilation renovation  decentralized ventilation unit
Choose an application
Power electronics technology is still an emerging technology, and it has found its way into many applications, from renewable energy generation (i.e., wind power and solar power) to electrical vehicles (EVs), biomedical devices, and small appliances, such as laptop chargers. In the near future, electrical energy will be provided and handled by power electronics and consumed through power electronics; this not only will intensify the role of power electronics technology in power conversion processes, but also implies that power systems are undergoing a paradigm shift, from centralized distribution to distributed generation. Today, more than 1000 GW of renewable energy generation sources (photovoltaic (PV) and wind) have been installed, all of which are handled by power electronics technology. The main aim of this book is to highlight and address recent breakthroughs in the range of emerging applications in power electronics and in harmonic and electromagnetic interference (EMI) issues at device and system levels as discussed in ?robust and reliable power electronics technologies, including fault prognosis and diagnosis technique stability of gridconnected converters and ?smart control of power electronics in devices, microgrids, and at system levels.
energy storage  lithiumion battery  battery management system BMS  battery modeling  state of charge SoC  gridconnected inverter  power electronics  multiobjective optimization  switching frequency  total demand distortion  switching losses  EMI filter  power converter  power density  optimal design  electrical drives  axial flux machines  magnetic equivalent circuit  torque ripple  back EMF  permanentmagnet machines  fivephase permanent magnet synchronous machine  fiveleg voltage source inverter  multiphase space vector modulation  sliding mode control  extended Kalman filter  voltage source inverters (VSI)  voltage control  current control  digital control  predictive controllers  advanced controllers  stability  response time  lithiumion batteries  electric vehicles  battery management system  electric power  dynamic PV model  gridconnected VSI  HFlink MPPT converter  nanocrystalline core  SiC PV Supply  DC–DC converters  multilevel control  renewable energy resources control  electrical engineering communications  microgrid control  distributed control  power system operation and control  variable speed pumped storage system  droop control  vector control  phasor model technique  nine switch converter  synchronous generator  digital signal controller  static compensator, distribution generation  hybrid converter  multilevel converter (MLC)  series active filter  power factor correction (PFC)  fieldprogrammable gate array  particle swarm optimization  selective harmonic elimination method  voltage source converter  plugin hybrid electric vehicles  power management system  renewable energy sources  fuzzy  smart microgrid  fivephase machine  faulttolerant control  induction motor  one phase open circuit fault (1Ph)  adjacent twophase open circuit fault (A2Ph)  voltperhertz control (scalar control)  currentfed inverter  LCLS topology  semiactive bridge  soft switching  voltage boost  wireless power transfer  DC–DC conversion  zerovoltage switching (ZVS)  transient control  DC–DC conversion  bidirectional converter  power factor correction  line frequency instability  one cycle control  nonlinear phenomena  bifurcation  boost converter  converter  ice melting  modular multilevel converter (MMC)  optimization design  transmission line  static var generator (SVG)  hardwareintheloop  floatingpoint  fixedpoint  realtime emulation  field programmable gate array  slim DClink drive  VPI active damping control  total harmonic distortion  cogging torque  realtime simulation  power converters  nonlinear control  embedded systems  high level programing  SHIL  DHIL  4T analog MOS control  high frequency switching power supply  water purification  modulation index  electromagnetic interference  chaotic PWM  DCDC buck converter  CMOS chaotic circuit  triangular ramp generator  spreadspectrum technique  system in package  electric vehicle  wireless power transfer  inductive coupling  coupling factor  phaseshift control  seriesseries compensation  PSpice  fixedfrequency double integral slidingmode (FFDISM)  classD amplifier  Qfactor  GaN cascode  direct torque control (DTC)  composite active vectors modulation (CVM)  permanent magnet synchronous motor (PMSM)  effect factors  double layer capacitor (DLC) models  energy storage modelling  simulation models  current control loops  dual threephase (DTP) permanent magnet synchronous motors (PMSMs)  space vector pulse width modulation (SVPWM)  vector control  voltage source inverter  active rectifiers  singleswitch  analog phase control  digital phase control  wireless power transfer  threelevel boost converter (TLBC)  DClink cascade Hbridge (DCLCHB) inverter  conducting angle determination (CAD) techniques  total harmonic distortion (THD)  threephase bridgeless rectifier  fault diagnosis  fault tolerant control  hardware in loop  compensation topology  electromagnetic field (EMF)  electromagnetic field interference (EMI)  misalignment  resonator structure  wireless power transfer (WPT)  WPT standards  EMI filter  electromagnetic compatibility  AC–DC power converters  electromagnetic interference filter  matrix converters  current source  power density  battery energy storage systems  battery chargers  active receivers  frequency locking  reference phase calibration  synchronization  wireless power transfer  lithiumion batteries  SOC estimator  parameter identification  particle swarm optimization  improved extended Kalman filter  battery management system  PMSG  DClink voltage control  variable control gain  disturbance observer  lithiumion power battery pack  composite equalizer  active equalization  passive equalization  control strategy and algorithm  n/a  commonmode inductor  highfrequency modeling  electromagnetic interference  filter  fault diagnosis  condition monitoring  induction machines  support vector machines  expert systems  neural networks  DCAC power converters  frequencydomain analysis  impedancebased model  Nyquist stability analysis  small signal stability analysis  harmonic linearization  line start  permanent magnet  synchronous motor  efficiency motor  rotor design  harmonics  hybrid power filter  active power filter  power quality  total harmonic distortion  equivalent inductance  leakage inductance  switching frequency modelling  induction motor  current switching ripple  multilevel inverter  cascaded topology  voltage doubling  switched capacitor  nearest level modulation (NLM)  total harmonic distortion (THD)  deadtime compensation  power converters  harmonics  n/a
Choose an application
Power electronics technology is still an emerging technology, and it has found its way into many applications, from renewable energy generation (i.e., wind power and solar power) to electrical vehicles (EVs), biomedical devices, and small appliances, such as laptop chargers. In the near future, electrical energy will be provided and handled by power electronics and consumed through power electronics; this not only will intensify the role of power electronics technology in power conversion processes, but also implies that power systems are undergoing a paradigm shift, from centralized distribution to distributed generation. Today, more than 1000 GW of renewable energy generation sources (photovoltaic (PV) and wind) have been installed, all of which are handled by power electronics technology. The main aim of this book is to highlight and address recent breakthroughs in the range of emerging applications in power electronics and in harmonic and electromagnetic interference (EMI) issues at device and system levels as discussed in ?robust and reliable power electronics technologies, including fault prognosis and diagnosis technique stability of gridconnected converters and ?smart control of power electronics in devices, microgrids, and at system levels.
energy storage  lithiumion battery  battery management system BMS  battery modeling  state of charge SoC  gridconnected inverter  power electronics  multiobjective optimization  switching frequency  total demand distortion  switching losses  EMI filter  power converter  power density  optimal design  electrical drives  axial flux machines  magnetic equivalent circuit  torque ripple  back EMF  permanentmagnet machines  fivephase permanent magnet synchronous machine  fiveleg voltage source inverter  multiphase space vector modulation  sliding mode control  extended Kalman filter  voltage source inverters (VSI)  voltage control  current control  digital control  predictive controllers  advanced controllers  stability  response time  lithiumion batteries  electric vehicles  battery management system  electric power  dynamic PV model  gridconnected VSI  HFlink MPPT converter  nanocrystalline core  SiC PV Supply  DC–DC converters  multilevel control  renewable energy resources control  electrical engineering communications  microgrid control  distributed control  power system operation and control  variable speed pumped storage system  droop control  vector control  phasor model technique  nine switch converter  synchronous generator  digital signal controller  static compensator, distribution generation  hybrid converter  multilevel converter (MLC)  series active filter  power factor correction (PFC)  fieldprogrammable gate array  particle swarm optimization  selective harmonic elimination method  voltage source converter  plugin hybrid electric vehicles  power management system  renewable energy sources  fuzzy  smart microgrid  fivephase machine  faulttolerant control  induction motor  one phase open circuit fault (1Ph)  adjacent twophase open circuit fault (A2Ph)  voltperhertz control (scalar control)  currentfed inverter  LCLS topology  semiactive bridge  soft switching  voltage boost  wireless power transfer  DC–DC conversion  zerovoltage switching (ZVS)  transient control  DC–DC conversion  bidirectional converter  power factor correction  line frequency instability  one cycle control  nonlinear phenomena  bifurcation  boost converter  converter  ice melting  modular multilevel converter (MMC)  optimization design  transmission line  static var generator (SVG)  hardwareintheloop  floatingpoint  fixedpoint  realtime emulation  field programmable gate array  slim DClink drive  VPI active damping control  total harmonic distortion  cogging torque  realtime simulation  power converters  nonlinear control  embedded systems  high level programing  SHIL  DHIL  4T analog MOS control  high frequency switching power supply  water purification  modulation index  electromagnetic interference  chaotic PWM  DCDC buck converter  CMOS chaotic circuit  triangular ramp generator  spreadspectrum technique  system in package  electric vehicle  wireless power transfer  inductive coupling  coupling factor  phaseshift control  seriesseries compensation  PSpice  fixedfrequency double integral slidingmode (FFDISM)  classD amplifier  Qfactor  GaN cascode  direct torque control (DTC)  composite active vectors modulation (CVM)  permanent magnet synchronous motor (PMSM)  effect factors  double layer capacitor (DLC) models  energy storage modelling  simulation models  current control loops  dual threephase (DTP) permanent magnet synchronous motors (PMSMs)  space vector pulse width modulation (SVPWM)  vector control  voltage source inverter  active rectifiers  singleswitch  analog phase control  digital phase control  wireless power transfer  threelevel boost converter (TLBC)  DClink cascade Hbridge (DCLCHB) inverter  conducting angle determination (CAD) techniques  total harmonic distortion (THD)  threephase bridgeless rectifier  fault diagnosis  fault tolerant control  hardware in loop  compensation topology  electromagnetic field (EMF)  electromagnetic field interference (EMI)  misalignment  resonator structure  wireless power transfer (WPT)  WPT standards  EMI filter  electromagnetic compatibility  AC–DC power converters  electromagnetic interference filter  matrix converters  current source  power density  battery energy storage systems  battery chargers  active receivers  frequency locking  reference phase calibration  synchronization  wireless power transfer  lithiumion batteries  SOC estimator  parameter identification  particle swarm optimization  improved extended Kalman filter  battery management system  PMSG  DClink voltage control  variable control gain  disturbance observer  lithiumion power battery pack  composite equalizer  active equalization  passive equalization  control strategy and algorithm  n/a  commonmode inductor  highfrequency modeling  electromagnetic interference  filter  fault diagnosis  condition monitoring  induction machines  support vector machines  expert systems  neural networks  DCAC power converters  frequencydomain analysis  impedancebased model  Nyquist stability analysis  small signal stability analysis  harmonic linearization  line start  permanent magnet  synchronous motor  efficiency motor  rotor design  harmonics  hybrid power filter  active power filter  power quality  total harmonic distortion  equivalent inductance  leakage inductance  switching frequency modelling  induction motor  current switching ripple  multilevel inverter  cascaded topology  voltage doubling  switched capacitor  nearest level modulation (NLM)  total harmonic distortion (THD)  deadtime compensation  power converters  harmonics  n/a
Listing 1  4 of 4 
Sort by

2019 (4)