Assertion: wind turbine | /r/HasProperty | preferred
Facets:
value: sometimes
type: TEMPORAL
value: over gearbox generators
type: OTHER
Source sentences:
text: While permanent magnet direct-drive generators can be more costly due to the rare earth materials required, these gearless turbines are sometimes preferred over gearbox generators because they "eliminate the gear-speed increaser, which is susceptible to significant accumulated fatigue torque loading, related reliability issues, and maintenance costs.