Page 203 - Fluid Power Engineering

W i nd T urbine Generator (WTG) Components 175

FIGURE 9-4 Schematic of a turbine with gearbox. Double roller tapered
bearing is integrated with hub and nacelle frame, thereby eliminating the
main shaft to carry power from rotor to gearbox. 1. Bearing mounted on hub.
2. Gearbox, 3. Generator. (With permission from SKF, maker of bearings.)

FIGURE 9-5 Schematic of a direct-drive turbine. Double roller tapered bearing
is integrated with hub and nacelle frame, thereby eliminating main shaft.
1. Bearing mounted on hub. 2. Rotor of generator. 3. Stator of generator.
4. Nacelle frame. (With permission from SKF, maker of bearings.)