Wind Rotor

Blade quantity

3

Blade

Blade length

34 m

Rotor arrangement

Horizontal axis; Up wind

Clockwise

Material

GFRP

Wind rotor turning speed

11-22rpm

Max. Chord of airfoil

3.1 m

Rated turning speed

19.8rpm

Max twist angle

13?

Wind rotor diameter

52.5 m

Blade weight

5.9 ton

Rotor swept area

3902m2

Gravity center

10.4m

Cut-in speed

3.0 m/s

Tip speed ratio

7.5

Rated wind speed

12.5 m/s

Design grade

IEC/GL

Cut-out speed

25 m/s

Generator

Rated power

1500 kW

Safe wind speed

70 m/s

Voltage

690V

Pitch regulation mode

Individual blade pitch regulation

Stator current

1035A

Power modulation

Electric pitch regulation

Rotor current

382A

Pitch regulation speed

About 6?/s

Type

4-pole and double-feed asynchronous generator

Weight

About 32 tons

Rotation speed range

1000-2000 rpm

Gearbox

Structure

One stage planet gear and two stage helical gear

Rated Rotation speed

1780 rpm

Transmission gear ratio

190

Rated torque

8852N m

Weight

16 ton

Insulation grade

F

Rated power

1500kW

Installation method

IMB3

Allowable power

1650kW

Cooling mode

IC411

Rated torque

750KN m

Protection grade

IP55

Efficiency

0.97

Rotor winding Open Circuit Voltage

1942V

Lubricating mode

Forced lubrication with oil pump

Efficiency

95%

Cooling method

air cooling

Weight

7.2t

Yawing system

Yawing bearing

Four point contact ball bearing

Brake system

Aerodynamic brake

Electric blade Individual pitch

Yawing motor

Four sets of 3kW motor

Yawing brake

Yawing hydraulic brake

Yawing speed

About 0.60?/s

High speed shaft brake

High speed shaft active brake

Control system

Type

PLC

Mechanical brake

Manual disk brake

Power grid connection

IGBT Inverter

Nacelle

Material

GFRP

Monitoring range

More than 100

parameters

Structure

Streamline

Display function

Based on internet, from any computer within network

Bottom frame type

Two body connection installation

Wind tower

Tower total height

63 m

Lifting type

Two point open window lifting

Structure

Taper steel pipe

Temperature control

Automatic heat-exchange and exhaust control

Weight

85 tons

Small crane

200kg70m1.1kW690V/380V

Other technical parameters:

Noise level: less than 85dB

Working environmental temperature: -30+40

Extreme environmental temperature: -35+50

Design service life: 20 years

Sand and dust proof, anti-moisture, anti-salt foganti-thunderbolt