WIND GENERATOR, WIND TURBINE, WIND TURBINE, WIND TURBINE GENERATOR, WIND POWER, WIND POWER GENERATOR
Specifications
NPS-20KW Generator head:1. Pitch control and auto brake 2. CE passed 3. Hydraulic tower 4. Low noise
Technology characteristic
A. Inner rotor design with good tightness. Level of protection: IP54
B. Radial tile-shaped permanent magnet rotor magnetic circuit structure: flux density is 10-15% higher than traditional Tangential magnetic circuit.
C. Generator fractional slot winding: generator design adopts fractional slot winding; lower output harmonic component of generator; lower waveform distortion; lower startup resist moment. All of these make wind turbine startup with lower wind speed.
D. Special electromagnetic load design: not only consider of generator capacity, but also improve generator's overload capacity by 1.5 times.
E. Larger cooling area: generator cooling area is over 2.5 times comparing with Stator outer circumference area. The temperature rise is always lower than 85 degree with long time running with 1.2 times to full output power.
F. Cold-rolled non-oriented silicon steel sheet: Lower generator iron loss
G. Independent design stator piece: more reasonable generator stator cell structure. Lower current density
H. Higher fixed voltage adjustable rate: Fixed voltage adjustable rate is over 45%. Lower cut-in wind speed; Easier for grid-connection inverter power design.
I. High structure strength: generator case can bear some damaged working condition such as single blade fly out. 1.5 times safety ratio
J. Permanent magnet direct-drive structure: no gear case, low failure rate.
Application field
Micro net power station. on-grid system; wind and solar hybrid system; GSM base station, frontier sentry, island and sight lighting system and so on.
NPS-20KW pitch controlled wind turbine output power curve
Strict Testing
Specifications of wind power system: 1. Pitch controlled 2. Automatic yawing 3. Lightning protection 4. On-grid system
Project Case Pictures:
NPS-20KW pitch controlled wind turbine technical parameters
|
NPS-20kW Pitch Controlled Technical Parameters |
|
Wind rotor diameter (m) |
9.2 |
|
Blade material and quantity |
Fiber glass reinforced * 3 |
|
Rated power / max power (w) |
20000/21000 |
|
Rated wind speed (m/s) |
11 |
|
Rated rotate speed (rpm) |
200 |
|
Working wind speed (m/s) |
3-20 |
|
Startup wind speed (m/s) |
2 |
|
Survived wind speed (m/s) |
60 |
|
Working voltage (v) |
DC500V |
|
Speed regulation method |
Pitch controlled + Active yawing +electromagnet brake |
|
Stop method |
Pitch controlled brake +Active yawing |
|
Generator style |
Three phase, permanent magnet |
|
Wind turbine weight (kg) |
970 |
|
Generator technology |
|
Rated voltage |
DC500V |
|
Rated/maximum output power |
20/21kw |
|
Stator external diameter |
400mm |
|
Generator shaft diameter |
85mm |
|
Generator weight |
385kg |
|
Outline dimension |
460×460×910mm |
|
Stator iron cone material |
Cold-rolled silicon steel sheet |
|
Generator shaft material |
40Cr |
|
Blade specification |
|
Blade length |
4.2m |
|
Blade weight |
45kg |
|
Material |
Reinforced fire-glass |
|
Quantity |
3 pieces |
|
Weather-proof treatment |
US imports 3M protection film |
|
Blade raw material |
US Ashland colophony |
|
Gel coat |
US Ashland gel coat |
|
Bond |
US imports Plexus |
|
Wind turbine main configuration |
|
No. |
Main components |
|
1 |
Blade |
|
2 |
Pitch controlled mechanism |
|
3 |
Generator |
|
4 |
Rotating support mechanism |
|
5 |
ASP automatic protection system |
|
6 |
Anemometer and dogvane |
|
7 |
Yawing control and cable-release mechanism |
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