Wind power
Wind power

High-tech power plants with high efficiency

Modern wind power systems deliver extremely high efficiency. For example, today's plants produce approximately 20 times more electricity than plants 20 years ago – and at lower cost. Still, wind farms are a large investment that requires high availability of the parts. This can be achieved only if all components are extremely reliable and feature fail-safe performance. To this end, Balluff has long been working closely together with leading manufacturers. We offer you industry-specific know-how and ensure the highest level of quality – for both onshore and offshore facilities.

Application examples

  • Rotor blade pitch control

    Reliable position determination for hydraulic drives

    The solution

    The wind power plant must be at a standstill and the rotor blades are moved out of the wind for maintenance. Our BHS inductive sensors determine both the piston position of the locking cylinder and the end position of the pitch system. And with absolute reliability. The high-pressure resistant sensors are also available as an analog version for soft stop.

    The features

    • Pressure rated to 500 bar, can be installed directly
    • Stainless steel housing
    • Also available in analog version for soft stop
    Energy, wind power, pitch adjustment of the blades of wind turbines
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  • Hold tolerances

    Longer service life thanks to reduction of imbalances and wind loads

    The solution

    Imbalances and wind loads shorten the service life of the bearings and the drive train of your wind turbines. Our BAW inductive distance sensors monitor the compliance of the air gap and tolerances at critical locations. Thanks to Balluff, loads are reduced and the service life is maximised.

    The features

    • Wear and maintenance-free thanks to contact-free working
    • Compact design
    • Simple installation, large distances
    Energy, wind power, minimizing wear in bearings and drive trains
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  • Monitor brakes

    Simple maintenance and longer service life thanks to automatic monitoring

    The solution

    Disk brakes are used at various locations in your wind power plants. Our BAW inductive distance sensors monitor these disk brakes continuously and with high precision. They also provide a timely warning if the brake pads need to be changed. This makes maintenance easy for you and ensures the durability of your plant.

    The features

    • Wide measuring range
    • Continuous detection
    • Compact design
    Energy, wind power, monitoring disk brakes
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  • Measure tower flex

    Reduce system strain and minimize risks

    The solution

    Strong forces have an effect on the tower during strong gusts of wind, storms or a wind power plant's start-up phase. Our BSI inclination sensors reliably measure the absolute angle of inclination of the tower. In doing so, they prevent the limit values from being exceeded and reduce strain on the plant.

    The features

    • Easy to install
    • Temperature range of –40 to +85 °C
    • Rugged metal housing
    Energy, wind power, monitoring tower inclination of wind turbines
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  • Monitor levels

    More reliability for your gearbox, hydraulic, and cooling systems

    The solution

    Optimum fill levels should always prevail in the expansion tanks of the cooling system and of the gearbox and hydraulic system. Our BCS capacitive sensors detect the maximum and minimum fill levels without direct contact – through the container wall or with the help of adapters. They are installed in the oil pan as a leak sensor and reliably report an oil loss there.

    The features

    • HALT tested capacitive sensors
    • Contact-free measurement through plastic walls
    • detect oil and water
    Energy, wind power, monitoring the fill levels of oil and coolant
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  • Detect rotor speed

    We reliably protect your wind turbines against overspeeds

    The solution

    Our BES inductive sensors measure the rotor speed in your wind power plants. Extremely reliable, even at temperatures up to –40 °C. Two inductive sensors aimed at the locking plate are sufficient for measuring the speed and detecting the direction of rotation of the rotor. Balluff thereby reliably protects your plant from overspeed.

    The features

    • High switching distance
    • Extended temperature range
    • Contactless detection
    • Insensitive to contamination
    Energy, wind power, monitoring rotor speed
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  • Monitor low speeds

    Extremely accurate measurement of speed and detection of direction of rotation and lock position

    The solution

    Our BML magnetic encoder measures the speed of your rotors with extreme accuracy, even at low speeds. The magnetic tape measurement system is simply attached to the main shaft. This allows it to not only detects the direction of rotation, but also the correct position for the rotor lock using reference points. It does all this without contact and therefore without causing wear.

    The features

    • Extremely accurate, even at very low speeds
    • Wear and maintenance-free thanks to contact-free working
    • Approach of positions possible
    Energy, wind power, speed measurement
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  • Ensure optimal control quality

    Ensure optimum control quality for feed-in

    The solution

    Generator speed is an important parameter for controlling your plant. The Balluff BML magnetic encoder reads the pole on the magnetic ring without contact, thereby monitoring the generator speed extremely reliably. Our sensors can also be used on shafts with a large diameter, e.g. due to a variety of ring diameters or as tape solutions. Through maximum durability and precision, we guarantee you optimum control quality for feed-in.

    The features

    • Simple, space-saving installation
    • Maximum service life thanks to contact-free operation
    • High precision thanks to high resolution
    Energy, wind power, monitoring generator speed
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  • Determine position

    Greater performance with Balluff position measurement systems

    The solution

    We developed our BTL magnetostrictive linear position sensors specifically for use in the hydraulic cylinders of wind power plants. You can use the pitch adjustment to accurately adapt the rotor blade angles to the wind speed. In doing so, the Balluff position measurement systems maximise the power generation and reliability of your plants.

    The features

    • Wear and maintenance-free thanks to contact-free working
    • Pressure-resistant to 600 bar
    • Vibration- and shock-resistant for reliable use in rough conditions
    Energy, wind power, checking the position of hydraulic cylinders
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  • Detect azimuth adjustment

    Reliable and cost-effective solution for higher wind power plant efficiency

    The solution

    To achieve the maximum efficiency of the wind power plant, the nacelles must be oriented in the wind. Our BES inductive sensors detect the position directly at the gear ring of the azimuth adjustment and make it possible to reliably move the nacelle to the optimum position.

    Balluff's robust sensors are ideally suited for inexpensively and redundantly supplementing standard solutions with a rotary encoder. In contrast to rotary encoders, our sensors do not need to be attached with a special mechanism.

    The features

    • Particularly sturdy, shock- and vibration-resistant
    • Wear and maintenance-free thanks to contact-free working
    • Suitable for wide temperature and humidity fluctuations
    • Stainless steel housing
    Energy, wind power, orienting nacelles in the wind
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