Pakistan Wind Power Indiginisation_Towers

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Pakistan Wind Power Indiginisation_Towers

  1. 1. Indigenisation Wind Power Rotor Blade By Akhtar Ali
  2. 2. Rotor Blades:GE 1.5 MW 30 M
  3. 3. Rotor Blades for Wind Turbine Generators with rated power 1.5 MW and above Rotor Bolt Circle Diameter Blade Length [m] [mm] [m] 1.5 MW - 1,7 LM 37.3 P2 MW 77 1800 37,25 LM 37.3 P3 77 1800 37,25 LM 40.3 P2 82 1800 40,00 LM 40.3 P3 82 1800 40,00 LM 40.3 P 82 1800 40,00 Nominal Power Output LM Blade Type LM 42.1 P GloBlade1 87 1800 42,13 LM 42.1 P2 GloBlade1 87 1800 42,13
  4. 4. Blade Materials • Wind blades are typically made of fiberglassreinforced epoxy or polyester • A wind turbine blade is usually manufactured by forming two half shells in an aerodynamically engineered pair of molds, then bonding the two halves together with adhesive. • gelcoats, adhesives, polyurethanes, structural foams, prepreg fabrics,
  5. 5. Process-I:Manual • Hand lay-up, open mold process Wind turbine blades are often fabricated by hand lay-up: cutting sheets of fiberglass cloth to fit the mold, laying the pieces into the mold, infusing resins to the fiber, and letting it cure.
  6. 6. Vacuum resin infusion • Currently, vacuum resin infusion is probably the most dominant processing method for manufacturing wind turbine blades. • During the vacuum-assisted resin transfer molding (RTM) process, fiber reinforcements are placed into a mold, formed into shape, and resins are then applied to the fibers

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