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Wind energy

Optimized for certification, installation and efficient operation on everything from the rotor blades, gearbox and generator to the pitch and azimuth system:

Discover encoders and sensors from HEIDENHAIN and its brands AMO, LEINE LINDE and LTN, designed for the rigourous requirements of wind turbines.

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Wind power is one of the main pillars in the transition from fossil fuels to renewable energy. Acheiving renewable energy goals requires more than a mere increase in the number of wind turbines. Their service life and performance must be optimized as well. Encoders, sensors and slip rings support this optimization throughout the manufacturing, operating and maintenance processes by delivering high-accuracy position, speed and load data for a wide range of wind-turbine components.

Solutions for wind turbines 

Wind turbines may look similar on the outside, but the way they generate power behind the walls of their nacelle varies.

Wind turbines equipped with a gearbox can leverage the many benefits of a high-speed generator. These generators are compact and rotate much faster than the rotor. The results are greater efficiency and an electrical frequency that matches the power grid.

Wind turbines without a gearbox are more compact and contain fewer moving parts. But these benefits are offset by an expensive ring generator requiring ever greater weight for higher performance. Even for these generators, we provide relialbe and easy-to-install modular encoders with very large diameters.     

To discover sensors, encoders and slip rings designed for geared and gearless wind turbines, explore the products from HEIDENHAIN, AMO, LEINE LINDE and LTN below.

Generator speed and position Rotor speed and position Transmitting data, power and signals Nacelle and rotor-blade adjustment systems Measuring nacelle and rotor-blade position Load measurement

Encoders for measuring the rotational speed and position of generators

LEINE LINDE 800

  • Robust design and a long service life
  • Common mechanical and electrical interfaces
  • Cost-effective

AMO WMR/WMK

  • Bearingless measurement
  • Immunity to magnetic and electrical fields
  • Light and cost-effective design

LEINE LINDE 2000

  • Bearingless measurement
  • Segmented ring for installation inside the drive train
  • Low profile for tight spaces

LEINE LINDE M500

  • Bearingless measurement
  • Immunity to magnetic and electrical fields
  • Wide axial displacement tolerance

LEINE LINDE 800

  • Robust design and a long service life
  • Common mechanical and electrical interfaces
  • Cost-effective

AMO WMR/WMK

  • Bearingless measurement
  • Immunity to magnetic and electrical fields
  • Light and cost-effective design

LEINE LINDE 2000

  • Bearingless measurement
  • Segmented ring for installation inside the drive train
  • Low profile for tight spaces

LEINE LINDE M500

  • Bearingless measurement
  • Immunity to magnetic and electrical fields
  • Wide axial displacement tolerance

Encoders for measuring rotor speed and position

LEINE LINDE 500

  • Compact and versatile 
  • High adaptability
  • Cost-effective

LEINE LINDE 600

  • Combination of incremental and absolute signal output
  • Wide range of fieldbus interfaces
  • Highly modular design and wide range of mechanical interfaces

AMO WMR/WMK

  • Bearingless measurement
  • Ring scales with tension lock for large axes
  • Stainless steel graduation carriers (two meters or longer)

LEINE LINDE 2000

  • Bearingless measurement
  • Segmented ring design and flange mount, ideal for large axis diameters
  • Wide axial/radial scanning gap

HEIDENHAIN ROC 413

  • Compact optical encoder 
  • Integrated SSI+HTL signal output, specifically designed for slip-ring mounting
  • Field-proven for decades

LEINE LINDE 500

  • Compact and versatile 
  • High adaptability
  • Cost-effective

LEINE LINDE 600

  • Combination of incremental and absolute signal output
  • Wide range of fieldbus interfaces
  • Highly modular design and wide range of mechanical interfaces

AMO WMR/WMK

  • Bearingless measurement
  • Ring scales with tension lock for large axes
  • Stainless steel graduation carriers (two meters or longer)

LEINE LINDE 2000

  • Bearingless measurement
  • Segmented ring design and flange mount, ideal for large axis diameters
  • Wide axial/radial scanning gap

HEIDENHAIN ROC 413

  • Compact optical encoder 
  • Integrated SSI+HTL signal output, specifically designed for slip-ring mounting
  • Field-proven for decades

Slip rings for transmitting data, power and signals

LTN SC105

  • Compact modular slip ring for data, power and signal transmission
  • Perfect fit for hydraulic pitch systems
  • Maintenance-free technology

LTN SC168

  • Hybrid modular slip ring for data, power and signal transmission
  • Perfect fit for the latest electrical pitch systems
  • The latest touchless data transmission (optional)

LTN SC330

  • High-power modular slip ring 
  • Specifically designed for blade heating systems
  • Permissible current loads of up to 250 amps

LTN K32ST

  • Touchless data transmission
  • Maintenance-free design
  • Robust, annodized aluminum enclosure

LTN SC105

  • Compact modular slip ring for data, power and signal transmission
  • Perfect fit for hydraulic pitch systems
  • Maintenance-free technology

LTN SC168

  • Hybrid modular slip ring for data, power and signal transmission
  • Perfect fit for the latest electrical pitch systems
  • The latest touchless data transmission (optional)

LTN SC330

  • High-power modular slip ring 
  • Specifically designed for blade heating systems
  • Permissible current loads of up to 250 amps

LTN K32ST

  • Touchless data transmission
  • Maintenance-free design
  • Robust, annodized aluminum enclosure

Encoders for blade azimuth and pitch system motors 

LTN RE58

  • Enclosed resolver
  • High immunity to harsh environments and EMC
  • High adaptability

LEINE LINDE M500

  • Modular incremental inductive rotary encoder
  • With and without a bearing
  • IP6x rating for installation outside motor

HEIDENHAIN EQI 1331

  • Absolute inductive rotary encoder with diagnostic functionality
  • Bearingless measurementt
  • IP2x rating for installation inside motor

Encoders for measuring the nacelle and rotor-blade positions

HEIDENHAIN ROQ 425

  • Optical rotary encoder with integral bearing
  • Multiturn functionality for long downtime periods
  • High reliability and proven technology

LEINE LNDE 600 YAWMO®

  • Complete solution with absolute position encoder, mouting bracket and pinion wheel
  • Pre-loaded wheel for backlash-free operation (optional)
  • Standardized design, but still customizable to individual needs

LEINE LINDE 900 YAWMO®

  • Functional safety with safety relay
  • 25-year service life
  • Complete solution with absolute position encoder, pinion wheel and mounting bracket

LEINE LINDE 600

  • Compact absolute encoder with inductive scanning
  • Modular encoder platform with various mechanical and electrical interfaces
  • Large bearing for direct pinion wheel mounting

HEIDENHAIN ROQ 425

  • Optical rotary encoder with integral bearing
  • Multiturn functionality for long downtime periods
  • High reliability and proven technology

LEINE LNDE 600 YAWMO®

  • Complete solution with absolute position encoder, mouting bracket and pinion wheel
  • Pre-loaded wheel for backlash-free operation (optional)
  • Standardized design, but still customizable to individual needs

LEINE LINDE 900 YAWMO®

  • Functional safety with safety relay
  • 25-year service life
  • Complete solution with absolute position encoder, pinion wheel and mounting bracket

LEINE LINDE 600

  • Compact absolute encoder with inductive scanning
  • Modular encoder platform with various mechanical and electrical interfaces
  • Large bearing for direct pinion wheel mounting

Sensors for measuring loads on the tower, bed plate and rotor blades

Optimal performance for wind turbines

In order to maximize the efficiency and service life of a wind turbine, the control system needs reliable, real-time data about vibrations and structural loads acting on the tower, bed plate and rotor blades. Collecting this information as it unfolds in real time makes it possible to integrate active load control strategies and monitoring functions into the control system.

The benefits are significant:

  • Longer service life
  • Less maintenance
  • Higher energy yields
  • Lower structural component costs

The components of this system are characterized by the following:

  • Unique combination of resolution and measuring range
  • Good signal-to-noise ratio
  • Simple installation and start-up
  • Stable measurements over long time periods
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