Basic
Design Datao:
|
|
Model
|
WD70/
1500kW
|
WD77/
1500kW
|
Rated
power
|
1500kW
|
1500kW
|
Power
factor
|
-0.95~+0.95
|
-0.95~+0.95
|
Cut-in
wind speed
|
3.5m/s
|
3.5m/s
|
Rated
wind speed
|
14m/s
|
13m/s
|
Cut-out
wind speed
|
25m/s
|
20m/s
|
Maximal
wind speed of survival
|
59.5m/s
|
52.5m/s
|
Operating
temperature range
|
-20℃--45℃(normaltemperature)
-30℃--45℃(lowtemperature)
|
-20℃--45℃(normaltemperature)
-30℃--45℃(low
temperature)
|
|
|
|
Rotor
|
|
|
Diameter
|
70m
|
77m
|
Swept
area
|
3847m2
|
4654
m2
|
Number
of blades
|
3
|
3
|
Blade
material
|
(GRP)
|
Rotor
speed
|
10.8rpm-19.1rpm
|
9.9rpm-17.2rpm
|
|
|
|
Gearbox
|
Type
|
(1
planetary,2 parallel)
|
Transmission
ratio
|
94
|
104
|
|
|
|
Generator
|
Type
|
doubly-fed
asynchronous generator
|
Rated
power
|
1500kW
|
1500kW
|
Rated
voltage
|
690V
|
|
Grid
frequency
|
50Hz
|
50Hz
|
Rated
speed
|
1,800rpm
|
1,800rpm
|
|
Conversion
system
|
Capacity
|
480/770
KVA
|
480/770
KVA
|
Output
frequency
|
50Hz
|
50Hz
|
|
Brake
|
Main
brake system
|
Individual
blade pitch brake
|
Mechanical
brake
|
HSS
mechanical disk brake
|
Safety
protection
|
fail
safe
|
|
|
|
Yawing
system
|
Type
|
Motor
drive
|
Control
|
Active
Yawing
|
Yaw
brake
|
Hydraulic
caliper brake
|
|
|
|
Tower
|
Type
|
Conical
tubular steel tower
|
Hub
height
|
65m
|
65m
|
|
|
|
Control
system
|
Main
controller
|
MITA
|
MITA
|
Monitor
|
Modem/Internet
|
|
|
|
Lightning
system
|
Blade
tip lightning receptors
|
Reliable
surge-protect device
|
Over-voltage
protection for electric components
|