4.2M148 EBC
Higher power generation, greater efficiency
The Senvion 4.2M148 is a low wind turbine and features a well-proven modular and evolutionary technology concept. With its updated gearbox design, significantly longer blades and an advanced pitch bearing the turbine can generate high yields while keeping LCoE to a minimum. A range of hub heights are available to suit project specific requirements. With Smart Power Mode the nominal power of the 4.2M148 can be maximized to 4,500 kW.
- Nominal power: 4,200 kW
- Rotor diameter: 148 m
- Hub height: project specific
- Wind class: Low Wind
- Operating temperature range: -20 – +45 °C
- Rotor surface: 17,203 m²
Technical data 4.2M148 EBC
Design data
| Nominal power | 4,200 kW / 4,500 kW * |
| Cut-in wind speed | 3 m/s |
| Nominal wind speed | 10.7 m/s |
| Cut-out wind speed | 22 m/s |
| Operating temperature range | -20 – +45 °C * |
- * with Smart Power Mode
- * de-rating above 35°C
Certification
| Hub height | Wind class | DIBt Wind zone |
|---|---|---|
| Project specific | IEC S (based on IEC IIIB) | - |
Rotor
| Diameter | 148 m |
| Rotor area | 17,203 m² |
| Rotor speed | 6 – 12.7 1/min |
| Power control | Electrical pitch |
Rotor blade
| Blade length | 72.5 m |
| Type | Glass fiber-reinforced plastic (GFRP) |
Electrical system
| Nominal frequency | 50 Hz/60 Hz |
| Generator | Squirrel Cage Induction Generator |
| Generator protection class | IP 54 |
| Nominal speed | 1,650 1/min |
| Converter type | Full converter with DC intermediate circuit |
Sound power level
| Maximum sound power level | 105 db (A) |
Power curve
Senvion Technology
The 4.XM series features a well-proven modular and evolutionary technology concept based on the Senvion 3.XM series. The smart and robust design results in a highly efficient and reliable turbine concept: from the aerodynamically optimized rotor blade, compact and efficient drivetrain, advanced control technology right through to the transformer. This flawless interplay delivers high energy yields while keeping sound emissions low.
Smart Power Mode
With our tried-and-tested and modular technology, Smart Power Mode enables the optimization of the wind turbine without component changes. By evaluating the project conditions and adjusting operational parameters, the nominal power can be increased by 300 kW. This maximizes the output from 4.2 MW to 4.5 MW. A combination of both Smart Power Mode and standard operation mode can be implemented to allow the best possible output from each wind farm.
| Smart Power Mode | |
|---|---|
| Nominal Power | 4,500 kW |
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Eco Blade Control
The Eco Blade Control (EBC) generation of turbines boasts high yields at low-wind locations, an outstanding operational lifespan of 25 years, and a low sound power level. Light weight construction of the blade due to our Rodpack Technology and an advanced load management technology completes the benefits of this turbines.
- 1
Generator/frequency converter
- Variable speed range for optimum yields
- Fully encapsulated generator with air-air heat exchanger
- Optimum temperature inside generator, even at high ambient temperatures
- Water-cooled converter power electronics for optimised cooling
- The converter and controllers are located in the tower base, leaving even more space in the nacelle and making operation that much easier
- 2
Gear system
- Planetary/spur gear
- Satisfies stringent demands in terms of service life and operating smoothness in line with Senvion gear specifications
- Elastomeric torque arm bearing for structure-borne sound insulation
- Low temperature thanks to efficient oil cooling system
- Three-stage oil filter system for excellent oil quality
- 3
Rotor blade
- Individual blade profiles for optimal aerodynamics of the rotor
- Robust aerodynamic design guarantees best possible performance, even in difficult wind conditions or when dirty
- Proven quality, tested statically and dynamically in accordance with IEC specifications
- Fully integrated lightning protection in accordance with IEC protection class I
- 4
Pitch system
- Virtually maintenance free electrical system
- High-quality, large blade bearing with permanent track lubrication and external gearing
- Integrated deflector in the spinner as protection from the elements
- Maximum reliability through redundant blade angle detection with two independent measuring systems
- Fail-safe design with independent drive and control systems for each rotor blade
- 5
Rotor bearing and rotor shaft
- High quality spherical roller bearing with bearing with perfectly fitted bearing housing and permanent lubrication for maximum service life
- Rotor shaft aligned with transfer of torque
- 6
Azimuth
- Four-point contact bearing with external gearing, powered by top quality high-performance gear motors
- Holding brakes with hydraulic pressure accumulator for fail-safe function relieve drive systems when inoperative and stabilise nacelle
- Minimum stress on the drive trains thanks to low friction of four-point bearing and brake release during wind tracking
- 7
Holding brake
- Generously dimensioned disc brakes hold rotor safely
- Soft brake function for minimum wear of gearbox
- 8
Tower
- Natural frequency of tower higher than rotational speed of rotor (rigid design) ensures minimum stress on tower and nacelle
- No speed restrictions, as no frequency interference
- Maximum component safety thanks to L-shaped flange and stress-optimised door opening
Please contact the relevant company within the Senvion Group to check the availability of a given product in your country.
Contact
Senvion Scandinavia AB
Sigurdsgatan 18
721 30 Västerås · Sweden
Sigurdsgatan 18
721 30 Västerås · Sweden