Generator speed

Speed monitoring at the end of the generator shaft

Backed by more than 20 years of know-how in wind energy, the Baumer HeavyDuty encoders are attuned to the demanding requirements of this industry. The well-conceived design unmatched in terms of robustness and reliability ensures maximum service life in continuous operation. Numerous design benefits ease installation at all sites and conditions. Lightning protection and the EMS functionality prevent and reduce expensive downtimes. Integrated centrifugal switches protect the system against damage in case of turbine overspeed.

Speed monitoring at the generator shaft

Baumer was the world’s first manufacturer of bearingless encoders specifically conceived for the large shafts of wind turbines. Available for shafts with a maximum 740 mm diameter, they are best-in-class and provide unique features that set new standards. Bearingless encoders are predestined for speed feedback straight at the drive shaft of the turbine. Large axial and radial tolerances ease installation and ensure reliable operation. Bearingless encoders provide maximum yield by their extremely long service life without mechanical wear.

Speed monitoring at the end of the generator shaft

20 years of experience in wind energy have attuned the Baumer HeavyDuty encoders to the demanding requirements of this industry. Lightning protection and the EMS monitoring functionality prevent and reduce expensive downtime. Integrated centrifugal switches protect the system against damage in case of turbine overspeed. Premium materials, perfected coatings and sealing systems together with an unrivalled rugged and well-conceived design ensure maximum service life in permanent offshore deployment.

  • Applications
    • Incremental HeavyDuty encoder for most demanding requirements (series HOG 86)

      • Extreme longevity
      • Insensitive against environmental impacts
      • Proven sensing technique
      • Excellent signal quality up to 500 m cable length (TTL)
      • Quick commissioning and reduced downtime thanks to monitoring functionalities
      • More than 50 years of HeavDuty expertise in one product

      HeavyDuty encoder with fiber optic interface (series HOG 86 L / ML)

      • Reliable optical signal transmission with maximum availability
      • Insensitive against electromagnetic interference
      • Transmission distance up to 2200 m, two fiber optic cables opt.
      • Signal error tracking
      • Integrated function monitoring system EMS and redundant configurations

      The universal HeavyDuty encoder (series HOG 10.2)

      • Incorporating 20 years of expertise in wind energy
      • Ultra-resilient housing
      • Flexible mounting capabilities thanks to rotatable terminal box
      • Enhanced longevity by hybrid bearings for protection against shaft currents
      • Optionally with integrated function monitoring system EMS (Enhanced Monitoring System)

      High resolution and no integral bearings to fit large shaft diameters (series HDmag)

      • Long-lasting and wear-free by non-contact sensing technique
      • Incremental and absolute configurations
      • Enhanced operational safety thanks to wide air gap
      • Narrow, space-saving dimensions
      • Easy to mount with flexible installation options
      • High resolution for low speed
    • Redundant HeavyDuty encoder (series HOG 86 M)

      • Twofold acquisition of speed and position
      • Two sensing units separated by galvanic insulation
      • Independent signal outputs
      • Flexible mounting options by two rotatable terminal boxes
      • Optionally with two integrated function monitoring systems EMS
      • Separated signal evaluation and enhanced error tracking

      The industry-proven HeavyDuty encoder (series HOG 9.2)

      • Optionally with integrated function monitoring system EMS (Enhanced Monitoring System)
      • Tried and tested mechanics
      • Signal output driver for cable length up to 500 m (TTL)
      • Insulation protection against inductive shaft currents

      Precise optical encoders (series ITD 41 A4)

      • Accurate generator feedback with a maximum resolution of 10’000 ppr
      • Corrosion-proof stainless steel design
      • Tried and trusted more than 10’000 times worldwide
      • Interference-immune by virtue of electrically insulated shaft and torque support

      Offshore encoders proven in the field for more 10 years (series HOG 131)

      • Housing with specialized surface protection
      • Special shaft seals
      • Integrated lightning protection
      • Flexible mounting options thanks to large terminal box rotatable through 180°
      • Extended service life by hybrid bearings for protection against shaft currents