Environmental Engineering Reference
In-Depth Information
Table 5.1
Properties of selected wind energy systems
Manufacturer
Fuhrlander AG
NORDEX AG
Siemens Wind
Power GmbH
GE Energy
Type
FL 250
N60
1,3 MW/62
1.5s
Rated power
50/250
250/1300
250/1300
1.500
kW
Rated/cut-in/cut-off-wind
velocity
15,0/2,5/25,0
15,0/2,5/25,0
13-14/3-4/25
13,0/4,0/25,0
m/s
Rotor
Diameter/swept area
m
/
m
2
29,0/661
60,0/2828
62,0/3019
70,5/3.904
No. of blades
3
3
3
3
min
−
1
Rotational speed
29/38
15,3/23,8
13/19
11
...
20
Gear box
stages/ratio
2/1:26
3/1:78
3/1:78
3/1:90
Generator
Type
IM, pole change.
IM, pole change
IM, pole change
IM, doubly fed
min
−
1
speed
750/1000
1010/1515
1000/1500
1500
...
1800
Voltage
400
690
690
690
V
Grid paralleling method
Thyristors
Thyristors
Thyristors
inverter
Control/Safety
Power limitation
Stall
stall
active-stall
pitch
Main brake
Blade tip var.
Blade tip var.
Blade angle var.
Blade angle var.
2nd brake
Disk brake
Disk brake
Disk brake
Blade angle var.
Masses
Rotor
4,9
21,5
30,0
28,0
t
Nacelle except rotor
9,8
51,4
50,0
49,0
t
To w e r
Hub height
42/50
46/60/69
68/80/90
55/65/80/85
m
Reference yield
Energy yield
2342
2746
3326
MWh/a
at height of tower
60
68
65
m
a) Example 250 kW, and 1300-1500 kW class
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