Composite Technology Corporation (CTC) products

Today’s utility scale wind turbine market is principally addressed by wind turbine designs that have evolved over the last thirty years. The conventional megawatt scale design incorporates a set of three fiberglass blades that have variable pitch to regulate power output and operate in a variable speed mode to maximize energy capture and to minimize loads arising from gusts. The blades are attached via a hub to a rotor shaft that turns at low rotational rates that change with the variation in wind speeds. The rotor shaft connects to a heavy-duty gearbox to increase the rotational speed to a level suitable to run an electrical generator.

ACCC conductor consists of a hybrid carbon and glass fiber core which is stranded with trapezoidal shaped aluminum strands. The high strength structural core carries most of the conductor’s mechanical load, while the fully annealed aluminum strands carry all of the conductor’s electrical current. The patented composite core is manufactured using a proprietary pultrusion process, wherein carbon and glass fibers are impregnated with a “toughened” high-temperature epoxy resin, and pulled through a heated pultrusion die which quickly cures the resin.