epf main features
DESCRIPTION
A Vertical axis wind turbine developed by Energy Power Family company www.epf-group.itTRANSCRIPT
VAWT 3kW
Main Features
energy power familywww.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
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.
cut-in [m/s] 3
cut-off [m/s] 14
Speed
[m/s]Power [W]
0 0,00
1 1,12
2 8,99
3 30,35
4 71,94
5 140,50
6 242,79
7 385,54
8 575,49
9 819,40
10 1124,01
11 1496,06
12 1942,29
13 2469,45
14 3084,29
15 3084,29
16 3084,29
17 3084,29
18 3084,29
19 3084,29
30 72141
243386
575
819
1.124
1.496
1.942
2.469
3.084
0
500
1000
1500
2000
2500
3000
3500
3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Po
we
r [W
]
Wind speed[m/sec]
Power [W] (experimental)
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
Features of VAWT
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.
average speed [m/sec]
5,85
S [m/s] Experimental Weibull
0 97 100,01 94 97,7
2 84 91,23 70 81,3
4 60 69,3
5 48 56,36 38 43,87 28 32,5
8 20 23,09 14 15,6
10 10 10,1
11 7 6,2
12 5 3,713 4 2,114 3 1,1
15 2 0,616 1 0,317 0 0,118 0 0,1
19 0 0,0
0
20
40
60
80
100
120
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
% p
rob
ab
ilit
yw
ind
Wind Curves Sperimentale Weibull
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
Features of VAWT
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.
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;
0
500
866 1057 1132 1101 989 829 651 482338
224140
84
13 54 120211
311398 454 469
442384
310
232
En
erg
y [k
Wh
]
Time[h]
Energy Stored during year Weibull
[h/year] 8760 Weibull
S [m/sec][%probabilty]
WeibullPower[kW] Time [h]
Energy
[kWh]
2 91,23 0 569,6 cut-in
3 81,34 0,03 866,4 13,1
4 69,27 0,07 1057,5 54,1
5 56,34 0,14 1132,3 120,3
6 43,77 0,24 1101,1 211,0
7 32,48 0,39 989,1 310,7
8 23,02 0,58 828,7 398,2
9 15,58 0,82 651,4 454,4
10 10,08 1,12 482,5 468,8
11 6,22 1,50 337,6 442,2
12 3,67 1,94 223,6 384,4
13 2,07 2,47 140,4 309,7
14 1,11 3,08 83,7 232,4
15 0,57 3 47,4 cut-off
Sum [h/year] [kWh/year]
7894 3399
Features of VAWT
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.
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.
0
500
1000
1500
2000
2500
3000
3500
4000
866 1057 1132 1101 989 829 651 482 338 224 140 84
En
erg
y [k
Wh
]
Time [h]
Energy stored during the year Weibull
Design specification
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.
Space dimension – Innovative DesignThe 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.CompactnessThe structure is designed to be easily mounted and assembled in a packaging .
Design specification
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.
The VAWT is realized by mean:
3 blades with an aerodynamic profiles
3 connecting elements
Material specification
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.
Strength and lightnessThe 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.
Aerodinamic specification
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.
PerformanceAerodynamic 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.
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.
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 fromthe 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.
EPFBIC città della Scienza
Via Coroglio, 57
80124 Naples - Italy
P.IVA 05867181215
mobile: +39329.12.93.829
e-mail: [email protected]
website: www.epf-group.it
Research & Innovation Manager
lng. Armando Carcaterra