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Wind Technik Nord GmbH

Wind Technik Nord GmbH
Enger Straße 13 ,
Enge-Sande ,
25917
Germany
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  5. WTN - Model 500 kW - Wind Turbine
WTN - Model 500 kW - Wind Turbine

- Model 500 kW - Wind Turbine

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The wind turbine WTN 500 is a pitch-controlled turbine with complete variable speed for operation parallel to the public grid. The rated output of the plant is 500 kilowatt; the rotor diameter is 48 meters.

Details

The rotor has three blades and is arranged in upwind position of the tower. Yawing into the wind is achieved by two electrically driven yaw systems. You can choose between a 40m or 50m tubular and a 65m lattice tower.The mechanical concept of the nacelle is based on a three-point-fixing of the main bearing together with the main gear unit and a two-generator system.

The WTN 500 operates with variable speed. The rated power of both asynchronous generators comes to 280 kilowatts each. Two frequency converters are installed to feed the electrical power to the grid.

Technical Data

GENERAL

  • Nominal Output:500 kW
  • Rotor shaft arrangement:horizontal
  • Effect limitation:pitch
  • Mode of operation:grid connected
  • Hub height :50 m (tubular) / 65 m (lattice)
  • Survival windspeed :59,5 m/s (50 m) - 52,5 m/s (65 m)
  • Calculated lifetime:25 years

POWER DATA

  • Cut in windspeed:3 m/s
  • Rated windspeed:12 m/s
  • P ower at 10 m/s:437 kW
  • Cut out windspeed:25 m/s
  • Max. shaft power:660 kW
  • Specific output:276 W/m²

ROTOR

  • Diameter:48 m
  • Swept area:1.810 m²
  • Number of blades:3
  • Kind of hub:rigid
  • Arrangement of rotor:upwind
  • rotor speed range:10 - 30 rpm
  • Lambda:5,5
  • Pitch angle:2 - 88°
  • Conus angle:0 °
  • Nacelle angle:4 °

BLADE

  • T ype:WTN 23,1 - Profile: FX77/79xxx
  • Material:GfK / EP
  • Lenght of blade:23,1 m
  • Weight:2.100 kg

GEAR

  • Type:helical spur gear
  • Ratio:1 : 50,3
  • Nominal torque:190 kNm

YAW-SYSTEM

  • Kind (active/passive):active
  • Actuation:electrical
  • Yaw speed:0,5 ° / s
  • Yaw-brake system:4 brake pad pairs (Hydraulical)

GENERATOR

  • Quantity:2 units
  • T ype:asynchronous, squirreled-cage
  • Rated output:280 kW
  • Rated speed:1.500 rpm
  • Voltage:690 V
  • Frequency:50 Hz
  • Nominal slip:0,9 %
  • Protection:IP 54
  • Grid connection:full size inverter

TOWER

  • Kind & lenght:tubular 48,5m / lattice 63,5m
  • Safety ladder:yes / yes

CONTROL SYSTEM

  • Power regulation:pitch, electrical activation
  • Operating system:Phoenix contact
  • Remote control system:Web based
  • Automatically start:after loss of grid and after cut out wind

BRAKES

  • Aerodynamic brake:pitch system (3x)
  • Activation:electrical
  • Mechanical brakes:yes
  • Arrangement:behind gearbox
  • Brake type:2 disc brakes
  • Activation:mechanical

MASSES

  • Rotor assembly:11.800 kg
  • Nacelle assembly:24.500 kg
  • Tower:54.000 kg / 61.500 kg
  • Total:90.500 kg / 98.000 kg

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