VAWT 3kW Main Features
energy power family www.epf-group.it
January 2010
Summary: Features of VAWT 3kW Design Specification Material Specification
Aerodinamic Specification Electronic Components
Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Features of VAWT cut-off [m/s]
Speed [m/s] 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
3
Power [W] (experimental) 3500
14
0,00 1,12 8,99 30,35 71,94 140,50 242,79 385,54 575,49 819,40 1124,01 1496,06 1942,29 2469,45 3084,29 3084,29 3084,29 3084,29 3084,29 3084,29
3.084
3000
Power [W]
2500
Power [W]
cut-in [m/s]
2.469
2000
1.942
1500
1.496
1.124
1000 819 575
500
386 72
30
0 3
4
243
141 5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Wind speed[m/sec]
For every wind speed the wind miller produce a relative power, the peak power of 3 kW is realized by mean a wind of 14 m / sec Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Features of VAWT average speed [m/sec]
Wind Curves
5,85 120
Experimental Weibull 97 100,0 94 97,7 84 91,2 70 81,3 60 69,3 48 56,3 38 43,8 28 32,5 20 23,0 14 15,6 10 10,1 7 6,2 5 3,7 4 2,1 3 1,1 2 0,6 1 0,3 0 0,1 0 0,1 0 0,0
Weibull
100
% probability wind
S [m/s] 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Sperimentale
80
60
40
20
0 0
1
2
3
4
5
6
7
8
9
10
11
12 13 14 15 16 17 18 19
To evaluate the wind distribution of a site, you can use the Weibull distribution of wind probability , which expresses the probability distribution of an experimental curve Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Features of VAWT 8760
[h/year] S [m/sec] 2
[%probabilty] Power[kW] Weibull 91,23 0
81,34 69,27 56,34 43,77 32,48 23,02 15,58 10,08 6,22 3,67 2,07 1,11 0,57
Energy [kWh]
3 4 5 6 7 8 9 10 11 12 13 14 15
Weibull Energy Time [h] [kWh] 569,6 cut-in
0,03 0,07 0,14 0,24 0,39 0,58 0,82 1,12 1,50 1,94 2,47 3,08 3
866,4 1057,5 1132,3 1101,1 989,1 828,7 651,4 482,5 337,6 223,6 140,4 83,7 47,4
13,1 54,1 120,3 211,0 310,7 398,2 454,4 468,8 442,2 384,4 309,7 232,4 cut-off
Sum
[h/year]
[kWh/year]
7894
3399
According to Weibull distribution of wind probability , the hours of wind are 7894 for year; so the energy produced during the year (3399 kWh) is the sum of the energy produced for each wind speed in the available time;
Weibull
Energy Stored during year
500
13
54
120
211
311
398
454
469
442 384 310
0
232
866
1057
1132
1101
989
829
651
482
Time[h]
338
224
140
84
Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Features of VAWT Energy stored during the year
Weibull
4000
Energy [kWh]
3500 3000 2500 2000 1500 1000 500
0
866 1057 1132
Time [h] 1101
989 829
651
482
338
224
140
84
The energy stored during the year (3399 kWh) is the sum of the energy produced for every wind speed ; Note: 3000 kWh is the energy used by an average household. Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Design specification Space dimension – Innovative Design The dimensions are 3 meters in height and 1.85 meters of diameter: This size ensures a minimum space for the installation and thanks to the height of the turbine, which allows you to take more wind along the entire length of the blade. The size of the turbine are designed in such a way as to achieve a classic installation with the vertical axis of rotation , or by providing an installation with the horizontal axis of rotation, for particular architectural additions. Compactness The structure is designed to be easily mounted and assembled in a packaging . Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Design specification The VAWT is realized by mean:
ď ś3 blades with an aerodynamic profiles ď ś3 connecting elements
Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Material specification
Strength and lightness The entire structure is made for CFRP (carbon fiber reinforced plastic) This ensures to have the highest structural performance, besides allows a minimum weight of the turbine that can be installed on the roof of buildings without problems. Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Aerodinamic specification
Performance Aerodynamic profiles are designed to ensure high performance in terms of yeld: The blades have an aerodynamic profile capable of ensuring the start-up at low speed (3 m / sec). The connecting elements have an aerodynamic profile capable of ensuring a minimum aerodynamic loss. Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
Electronic components The power generator is a Direct Drive type: With the direct drive technology does not use speed multiplier, in favor of the absence of wear and noise and less maintenance. The inverter and control unit are able to ensure the maximum performance on the output from the generator through a system of tracking the point of maximum power. A monitoring system can be installed for the measurement of the power and energy supplied by the turbine during annually operation.
Energy Power Family S.a.s. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of Energy Power Family S.a.s.
EPF BIC cittĂ della Scienza Via Coroglio, 57 80124 Naples - Italy P.IVA 05867181215 mobile: +39329.12.93.829 e-mail: info@epf-group.it website: www.epf-group.it Research & Innovation Manager lng. Armando Carcaterra