Post on 19-Jan-2015
description
Indigenisation Wind Power
Rotor BladeBy
Akhtar Ali
Rotor Blades:GE 1.5 MW 30 M
Rotor Blades for Wind Turbine Generators with rated power 1.5 MW and above
Nominal Power Output
LM Blade Type Rotor Bolt Circle Diameter
Blade Length
[m] [mm] [m]
1.5 MW - 1,7 MW
LM 37.3 P2 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
LM 42.1 P GloBlade1 87 1800 42,13
LM 42.1 P2 GloBlade1 87 1800 42,13
Blade Materials
• Wind blades are typically made of fiberglass-reinforced 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,
Process-I:Manual
• Hand lay-up, open mold processWind 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.
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