WESPA - Model 750KW - Wind Turbine
The production of the 200/225 kW turbine is overseen by our industrial partner and the design is guaranteed through the technology transfer and agreement by a solid danish firm, who features over 400 installations worldwide and oversees the production of turbines from 200 kW to 750 kW by licensees in Boston, India and Brazil.
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Product Details
UST a few strengths worth mentioning for the 200/225 kW turbine are: the absence of an inverter, the long-term reliability against weather conditions, the adaptability to a variety of sites, and the low-maintenance for both mechanical and electrical parts. We will provide our customers with optional technical upgrades in the future, such as elongated blades which optimize the turbine production curve; and, the introduction of variable pitch control which increases output in class II sites that have average-to-low wind speeds.
IEC Class II
A robust and proven turbine with over 10 years of operational experience
WESPA 750KW, Background A Robust and Proven Turbine
The WESPA 750KW turbine
The 750kW turbine has over 100 installations and has been in operation for over 10 years; demonstrating continued demand as a safe investment across a wide range of projects and wind conditions based on its track record of proven reliability, performance and low operating costs.
The WESPA 750kW is Active Stall Regulated (ASR) Wind Turbine with a rotor diameter of 47m. The turbine is characterized by simplicity in terms of its design and usage of proven technology, resulting in low maintenance costs. Given the on‐going trend for higher capacity machines, the WESPA 750kW is perfectly positioned for wind farms at locations where demand for electricity is moderate or where bigger turbines are simply not an option due to issues such as planning or access restrictions.
Full service and maintenance contract :
The WESPA 750kW wind turbine is offered with an additional full service and maintenance contract covering components, labour and machine availability for up to 15years, minimizing risks to the client.
Certification and power curve measurement:
WESPA 750KW turbine is certified as per IEC 61400‐1 Turbine Class.
Power Curve WESPA 750kW Specifications:
The power curve is for our 750 kW turbine, with a rotor diameter of 47, double generator and featuring Active Stall Regulation. A system that among others compensate for the natural variations of the stall level due to variations in air density and pollution of the blades.
The power curve is valid for : 1.225 kg/m3 air density, clean blades and undisturbed horizontal indflow.
The annual energy production is calculated for dif...
- The annual energy production is calculated for different annual mean wind speed in hub height.
- A Rayleigh wind speed distribution and 100 % availability is assumed
The power curve is for our 750 kW turbine, with a ...
The power curve is for our 750 kW turbine, with a rotor diameter of 47, double generator and featuring Active Stall Regulation. A
system that among others compensate for the natural variations of the stall level due to variations in air density and pollution of the
blades.
The power curve is valid for: 1.225 kg/m3 air density, clean blades and undisturbed horizontal inflow.
Technical Specifications
General
- Model: 750kW
- Rated power (nominal electric power): 125/600 kW or 180/750 kW.
- Rotor diameter: 47m
- Turbine concept: Gearbox, with Active Stall power Regulation (ASR)
Rotor
- Type: 3 bladed, upwind rotor
- Diameter: 47m
- Swept area: 1735m2
- Rotor speed: 25.5rpm at full load
- Power regulation: Active Stall Power Regulation
- Blade length / type: 21m
- Blade material: Fibreglass / epoxy
- Tilt angle: 4°
- Coning angle: 3.0° forward
- Blades make: LM 21.0 P
- Tip speed: 62 – 63m/s at full load
- Lightening Protection: Blade Integrated, Direct to Structure
Generator
- Type: Asynchronous double wound, 6/4poles induction generator
- Configuration: Closed, 4‐pole, double wound, induction, IP54
- Rated Capacity: 750kw
- Speed: 1000/1500 (50 Hz) or 1200/1800 (60 Hz) rpm synchronous
- Loss in generator: 3 %
- Generator cut‐in: Thyristor controlled gradual cut‐in
Gear Box
- Type: Planetary/Helical
- Ratio: 1 : 59,385
- Stages: 3
Yaw System
- Yaw motor: 4 pcs. With electrical brakes built in
- Yaw brakes: 4 pcs. Hydraulic brakes of disk brake type
- Yaw bearing: 4‐point ball bearing
Pitch System
- Pitch angle: ASR
- Pitch bearings: 4‐point ball bearings
- Nominal pitch speed: 7.5 °/sec
Grid connection
- Grid connection: Direct Grid Tie at 50Hz, 400V
Hub / Tower
- Type: Conical steel Tubular Tower/Hub
- Hub height: 50/ 55/ 65m hub height
- Access to hub: Internal ladder support system with Platforms for safe climbing
Special devices
- Air brake, normal: Pitch to ‐20°, actuated by the ASR regulation
- Air brake, emergency: Pitch to ‐85° fail safe, activated by accumulators in hub
- Mechanical brake: A fail‐safe type disk brake
- Brake torque: 1, 8 times of nominal torque
- RPM max. Value: 1600 (50 Hz) or 1920 (60 Hz) observed on the high‐speed shaft
- Control System: CC–Electronic / Mita Teknik
Operational data
- Cut in wind speed: 3‐4 m/s, based on 10min average
- Cut out wind speed: 25 m/s, based on 10min average
Mass Data
- Mass of blade: (3) 6.600 kg
- Mass of hub: 8.000 kg
- Mass of nacelle: 24.000 kg
- Mass total, excl tower: 38.600 kg
- Maximum noise level: 100dBA
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