|
Operating data |
|
|
Rated power (kW) |
4550 |
|
Cut-in wind speed (m/s) |
3 |
|
Cut-out wind speed (m/s) |
20 |
|
Rated wind speed (m/s) |
9.8 |
|
Type of wind zone |
IEC S |
|
Operating temperature (℃) |
-30 ~ +40 |
|
Survival temperature (℃) |
-40 ~ +50 |
|
Design life (years) |
20 |
|
Impeller |
|
|
Impeller diameter (m) |
172 |
|
Swept area (m2) |
23223 |
|
Number of blades |
3 |
|
Blade material |
GRP |
|
Pitch system |
|
|
Type |
Electric pitch |
|
Pitch bearing |
Double row four-point angular contact ball bearings |
|
Gearbox |
|
|
Gearbox type |
Two-stage planet, one-stage parallel axis |
|
Gearbox lubrication method |
Forced + splash lubrication |
|
Gearbox oil filtration |
Online filtration (optional offline fine filtration) |
|
Generator |
|
|
Type |
Doubly-fed asynchronous generator |
|
Rated voltage (V) |
1140 |
|
Braking system |
|
|
Pneumatic braking system |
Pitch system |
|
Mechanical braking system |
Hydraulic mechanical brake |
|
Yaw system |
|
|
Type |
Active Yaw |
|
Yaw drive |
Electric yaw |
|
Yaw bearing |
Yaw bearing + hydraulic brake |
|
Frequency converter |
|
|
Rated voltage (V) |
1140 |
|
Network side frequency (Hz) |
50 |
|
Transmission chain |
|
|
Main bearing |
Spherical roller bearing |
|
Control System |
|
|
Control unit |
PLC |
|
Process control system |
Distributed control |
|
Bus Control Type |
Powerlink |
|
Remote Control |
SCADA |
|
Tower |
|
|
Type |
Steel cone tower/concrete tower |
|
Hub center height (m) |
100-160 (customized by project) |
|
Cylinder |
Structural steel; precast concrete |
