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60 215 (0,215s)

Result

Temporal and spatial variability of wind speed related to energy production by wind turbines

variability of the wind speed at 80 m above ground was assessed. The computation was based on standard deviation of the variable. Also, the factor of annual and daily course minute. In the next step, the relation ...

DG - Vědy o atmosféře, meteorologie

  • 2007
  • Zx
Result

A novel scheme for control by active and reactive power utilized in gearless variable speed wind turbine system with PMSG connected to the grid

for a variable speed wind turbine generator in order to produce utmost power from varying wind types, and variable wind speed. Novelty. This research paper presents an IGBT and reactive ...

Electrical and electronic engineering

  • 2022
  • JSC
  • Link
Result

Modeling and simulation of a gearless variable speed wind turbine system with PMSG

analysis a gearless variable speed wind turbine system with Permanent Magnet Synchronous Generator (PMSG). Modelling and simulation of the gearless variable speed wind in wind speed<...

Energy and fuels

  • 2017
  • D
  • Link
Result

Spatial and temporal variability of mean daily wind speeds in the Czech Republic, 1961-2015

This contribution analyses the spatio-temporal variability of mean daily wind are discussed with respect to problems associated with wind speed measurements, particularly the change from standard to automatic w...

Meteorology and atmospheric sciences

  • 2017
  • Jimp
  • Link
Result

Spatial and temporal variability of mean daily wind speeds in the Czech Republic, 1961-2015

This contribution analyses the spatio-temporal variability of mean daily wind are discussed with respect to problems associated with wind speed measurements, particularly the change from standard to automatic w...

Climatic research

  • 2017
  • Jimp
  • Link
Result

Differences in wind speeds according to measured and homogenized series in the Czech Republic, 1961-2015

. Generally lower mean wind speeds (as well as wind speed variability) were obtained fromNon-meteorological factors may bias wind speed measurements in a number of ways different results ...

Meteorology and atmospheric sciences

  • 2019
  • Jimp
  • Link
Result

Simultaneous Prediction of Wind Speed and Direction by Evolutionary Fuzzy Rule Forest

An accurate estimate of wind speed and direction is important for many is demonstrated by the evolution of forests of fuzzy rules for simultaneous wind speed. These two environmental variables depend on a ...

Computer sciences, information science, bioinformathics (hardware development to be 2.2, social aspect to be 5.8)

  • 2017
  • D
  • Link
Result

Effect of Variable Wind Speed on Wind Turbines with Induction and Doubly Fed Machines

Wind speed fluctuations and particularly the tower shadow effect may result in variations of active and reactive powers generated by wind turbines. The resulting flicker effect deteriorates power quality in connected power ...

JA - Elektronika a optoelektronika, elektrotechnika

  • 2004
  • D
Result

Differences in wind speeds according to measured and homogenized series in the Czech Republic, 1961–2015

. Generally lower mean wind speeds (as well as wind speed variability) were obtained fromNon-meteorological factors may bias wind speed measurements in a number of ways different results ...

Climatic research

  • 2018
  • Jimp
  • Link
Result

Meteorological Measurements around the Building UCEEB

humidity, solar radiation, wind speed, wind direction, and precipitation, has beenThe experimental site was established at the research facility of the University Centre for Energy Efficient Buildings (UCEEB) in Bustehrad,...

JB - Senzory, čidla, měření a regulace

  • 2015
  • D
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