CONCERNING THE CONVERSION EFFICIENCY INCREASE OF THE AVAILABLE WIND POTENTIAL
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2011, Vol 35, Issue 35
Abstract
There are some arguments in favor of the small systems for wind energy conversion directly in thermal energy by using the eddy current heater: the existing structure of power and thermal energy consumption is in favor of the last, reliability and low cost of the eddy current heater, optimal operation at different wind speeds, higher capacity factor of wind turbine, heat accumulation and its use during periods, when the wind doesn’t blow, can be solved simply and cheaply. Based on non-dimensional characteristic efficiency factor - tip speed ratio and size of the turbine rotor was calculated power curve, which shows a real possibility to increase the production of thermal energy at wind speeds higher than rated wind speed. The calculation algorithm is presented. In one and the same wind conditions the wind turbine will produce more thermal energy than power. Based on measured wind data for one year and wind turbine power curve, the power and thermal energy production were calculated. In the analyzed example (turbine rated power is 9,8 kW) the amount of thermal energy will be higher by about 6 % for 12 months and in the cold season, when wind speed is higher - with 12 to 18 %.
Authors and Affiliations
Ion SOBOR, Andrei CHICIUC, Rodion CIUPERCA, Vasile RACHIER
Keywords
Related Articles
- EP ID EP92333
- DOI -
- Views 222
- Downloads 0
Control of a Single-Phase Active Filter Using Triangular Carrier and Hysteresis Switching in MATLAB/Simulink
The paper deals with MATLAB/Simulink models of single-phase active filters used for reducing the harmonic level and electromagnetic interference and to get compliance with the power quality standards. Four cases...
Comparisons Among p - Channel, n-Channel and Mixed n/p Channel OTFTs
Some theoretical approaches of an alternative organic semiconductor device are presented in this work. The Organic transistors are based either on n-type or p-type or mixed p/n overlapped layers. The carrier modulation i...
An Analysis on Efficiency of Wireless Transfer Energy Due to a Misalignment of Two Coils
Function of the alignment of the two magnetic coupled coils, a procedure, to choose the proper structure of the two coils used in the wireless power transfer systems (WPTS’s), is presented. The deviation in the alignment...
Hysteresis Current Control of the Single - Phase Active Filter
To compensate harmonic current components in case of unbalanced three-phase loads authors will propose a structure composed by three single phase active filters. To begin is implemented the single-phase active filter whi...
Presentation of a new design current supply based on inductive ballast; ripple comparison with SMPS
This paper presents a new design approach of a very low cost LED power supply. The innovation comes from the reusage of the inductive ballast already functioning in street lighting solutions based on fluorescent lamps. N...