NEWS AND ARTICLES

WIND POWER

THE DELOM ADVANTAGE

Due to its many years of experience with electromechanical and rotating equipment, and given its mission, the company decided to establish the Delom Services Wind Division. As wind generator specialists, Wind Division teams offer wind generator exchange plans, as well as a full range of services, in-shop or up-tower, to maintain, repair, and improve equipment, and to provide spare parts.

Wind Division teams carry out repairs and overhaul for all types of wind generator technology, whether for preventive or predictive maintenance, an end-of-warranty inspection, reverse engineering, or a full rewinding of the rotor and/or stator. We also provide our clients with reports outlining the root cause of the failure, as well as complete repair reports to provide a 360o vision of their units. Our goal is to reduce to a minimum the wind turbines’ downtime, while optimizing the units for the proper functioning of the wind generators.

Over the years, various types of generators have had failures that seemed redundant due to designs that were not adapted to the extreme weather conditions in northern areas. Delom Services Wind Division therefore established retrofit procedures that can be carried out up-tower or in our workshop that are correcting the shortcomings of those wind generators designs.

The Delom Services Wind Division has developed several innovative repair techniques enabling us to carry out a very large number of specialized electrical and mechanical works up-tower. Our up-tower service teams are multidisciplinary, minimizing the need to remove the generator from the turbine. Delom Services Wind Division also carries an inventory of replacement parts for wind generators, such as brush holders, brushes, bearings, etc.

DELOM AND THE INDUSTRY

The wind power industry is on the rise all over the world. This clean renewable energy is abundantly available in Canada and North America. The technologies related to wind power generators, however, are relatively new compared to other energy sources and Nordic climates poses challenges that cause stress and wear on the structures as well as on the generators and mechanical components.

Removing a generator from the tower to repair it bares significant direct costs as it calls for cranes and specialized operators.  The indirect costs, however, are also prohibitive due to a stoppage of production while the unit is being repaired. This is why Delom Services works side by side with its client to develop efficient and durable solutions to reduce and prevent failures and to improve the generators electrical and mechanical stability.


TYPES OF WIND POWER GENERATORS
  • Hitachi wind power generators 1,5 MW/1,6 MW, up to 3 MW and more
  • GE wind power generators 1,5 MW/1,6 MW, up to 3 MW and more
  • ABB wind power generators 1,8 MW/660 kW/1,5 MW, up to 3 MW and more
  • Weier wind power generators 1,8 MW/2,0 MW, up to 3 MW and more
  • Winergy wind power generators 1,5 MW/2,3 MW, 
  • Loher 1,5 MW
  • Elin 750 kW/1,5 MW, up to 3 MW and more
  • Leroy Somer wind power generators 660 kW/1,5 MW/1,8 MW, up to 3 MW and more
  • VEM wind power generators 1,5 MW, up to 3 MW and more
  • Siemens wind power generators 225 kW/2,3 MW, up to 3 MW and more
  • Toshiba wind power generators 1,5 MW, up to 3 MW and more
  • Enercon wind power generators up to 3 MW and more
  • Indar wind power generators up to 3 MW and more
  • Canterey wind power generators up to 3 MW and more
  • Haiphong wind power generators up to 3 MW and more
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TYPES OF WIND TURBINES
  • GE wind turbine 1,5 MW/1,6 MW/1,7 MW/up to over 3 MW
  • Vestas wind turbine V27/V47/V80/V90/V100/V110/V105/V112/V117/V126/V136
  • Siemens wind turbine SWT-2,3/SWT-3,3/SWT-4,0/ SWT-7,0
  • NEG Micon wind turbine 750 kW/1,5 MW
  • Senvion wind turbine 2,0 MW, 3,0 MW wind turbine
  • Enercon wind turbine
  • Mistsubishi wind turbine 2,4/600 kW/1,0 MW 
  • Goldwind wind turbine
  • Acciona wind turbine 1,5 MW, 3,0 MW
  • Clipper wind turbine2,5 MW
  • Zond wind turbine Z40, Z48, Z50
  • Suzlon wind turbine S88 2,1 MW/S64 1,25 MW
  • Vensys wind turbine 62/1200, 70/1500, 77/1500, up to model 136/3000
  • Nordex wind turbine 750 kW/1,0 MW/1,3 MW/2,5 MW
  • Samsung wind turbineS2,5 and S7,0
  • Gamesa wind turbine 2,0 MW/ 2,5 MW/ 3,3 MW /5,0 MW G80 /G87 /G90 /G97 /G114 /G106 /G126/G128/G132

WIND POWER GENERATORS UP-TOWER RETROFITS
  • Wye ring retrofit for Hitachi wind power generator
  • Wye ring retrofit for GE wind power generator
  • Wye ring retrofit for ABB wind power generator
  • Rotor cables retrofit for ABB, GE and Hitachi wind power generators
  • Brush/brush holder retrofit and full analysis


IN-SHOP SERVICES
  • Stator and rotor rewinding
  • Coil manufacturing all types and voltages
  • B-Stage winding
  • VPI impregnation up to 16 ft. in diameter
  • Retrofit of connecting cables, wye ring, brush, brush holder and collector rings
  • Test in rotation
  • Dynamic balancing
  • Laser alignment
  • Mechanical components overhaul and verification
  • Machining
    • Bearing seat casing
    • Main shaft seat chroming
    • Full welding service
    • Bearing shaft seat correction
    • HVOF
    • Thermal spray
  • Engineering service for root cause of failure analysis
  • Detailed repair report
UP-TOWER SERVICES
  • Electrical tests on wind power rotors and stators
    • Insulation resistance to mass (MEGGER)
    • Hi-Pot test
    • Surge test
    • Resistance and Impedance test
    • Polarization index
    • Dielectric discharge
    • Drop test
  • Vibration analysis on wind power generators, gearboxes and auxiliary electric motors
  • Generator alignment
  • Generator balancing
  • Brush/brush holder and ring system maintenance and application analysis
  • Complete electrical diagnosis
  • Visual and fiberscope inspection
  • Bearing replacement and failure analysis
  • Ultrasonic bearing analysis
  • Causes of failure report
  • Repair report


OTHER WIND POWER COMPONENTS SPECIALIZED SERVICES

  • Pitch electric motor winding and refurbishing
  • Fan electric motor winding and refurbishing
  • Yaw speed reducer refurbishing
  • Heat exchanger refurbishing
  • Winding and transformer refurbishing
  • Winding and inductance refurbishing
  • Resister bank refurbishing
  • HVOF main shafts refurbishing
  • Gear casing inspection
SPARE PARTS DISTRIBUTION
  • Generators in inventory for exchange plans
  • Wind generator power brushes and ground brushes
  • Brush holders for wind generators
  • Collector rings for wind generators
  • Pitch motor brushes
  • All bearing types
  • All parts related to wind generators


TRAINING PROGRAM

Two-day training program includes:

  • The wind power generator and its components
  • Fiberscope-assisted visual inspection
  • All electrical tests and analysis
  • Practice tests on real generators
  • Generator electrical diagnostic
  • Methods of mechanical inspection
  • Bearing condition inspection
  • Lubrication and its impact on vibration
  • Introduction to vibration analysis
  • Generator mechanical diagnostic
  • Case study and skill certificate

specialized workshops