Overview

Permanent direct drive variable pitch in the world
Designed by gear-less, PM direct drive and initiative variable pitch, which make sure initiative variable pitch with strong wind, stability of output rate, of gaining more power in case of low-speed wind, that technology has acquired patents from nationality.
Annual energy power 240,000kWh(7m/s)
On the average annual wind speed as 7m/s, annual energy power is over 240,000kWh.
Intellectual mult-level protection
Intellectual variable pitch, mechanical brake, electromagnetic brake,initiative yaw system To ensure that wind turbine generator adjust automatically under unusual condition and reliability of the whole system.
Full power inverter isolation
Full power inverter isolation can ensure wind turbine generator in safety operation, lessen interference for grid.
Application field
Mini-type wind power plant, smart power grid, micro-grid system, on-grid distributed generation in client-side

    Specifications  
 
Model FD21-50

Design class

IECII

Orientation

Upwind

Design life

20 years

Rotor diameter

21.5 m(70.5ft)

Hub height

43m(140ft)/37m(121ft)/31m (102ft)/25m (82ft)

Tower type

Monopole

Certifications

SWCC,CEI 021,UL1741, IEEE1547, CSA C22.2 107.1-01, G59/2 , CE

Performance

Rated power

50kW

Power regulation

Variable pitch control

Rated rotation speed

50RPM

Cut-in wind Speed

3m/s

Rated wind speed

9m/s

Cut-out wind Speed

25 m/s

Survival wind Speed

59.5m/s
Weight

Blades

1140 kg

Nacelle& Generator

8,000 kg
Tower 18,500/15,000/13,000/8,600kg

Brake system

Air Brake

Blades pitch

Mechanical brake

Main shaft brake

Electrical brake

Dump load

Yaw system

Control

Driven by electric motor and actively trace wind direction and automatic untwist cable

Control /Inverter System

Control type

Industry Siemens PLC

Inverter type

Full power Inverter with isolation transformer

Grid interface AC480V/AC600V60Hz,AC400V50Hz

Monitoring System

cube2.0

Generator

Generator type

3 Phase, Permanent Magnet Generator

Gearbox

No gearbox – Direct Drive

Rated Voltage 400VAC

Isolation class

F

Blades

Material FRP

Blade length

10.2

Quantity

3

Tower

Tower Type

Monopole with internal ladder

Surface treatment

Anti-rust painting

Height

42(137ft)/36m (118ft)/ 30m (98ft)/ 24m (79ft)

Noise

Noise level

Less than 60dBA

Environmental specification

Operational temperature

-20 ℃ to 50 ℃

Generator

IP54

Lightening protection

Receptors installed in the blades, nacelle lighting rod and electrical surge protection

 

Wind Turbine
(m/s)
4
5
6
7
8
9
10
11
12
13
14
Power(kW)
3.8
8.3
16.5
24.9
35.5
47.2
54.7
60.4
61.8
65.2
64.3
Wind Speed(m/s)
AEP(kWh)
5
129100
6
187500
7
241600
8
288600
9
327500
10
357800
11
379800
 
    Certification  
    Project  
 
Copyright Enwind international corp.