Resource Documents by Ragheb, Adam
Ragheb, Adam; and Ragheb, Magdi
Wind turbine gearbox technologies ~
INTRODUCTION Operational experience reveals that the gearboxes of modern electrical utility wind turbines at the MW level of rated power are their weakest-link-in-the-chain component. Small wind turbines at the kW level ofrated power do not need the use ofgearboxes since their rotors rotate at a speed that is significantly larger than utility level turbines and can be directly coupled to their electrical generators. The typical design lifetime of a utility wind turbine is 20 years, but the gearboxes, which convert . . .
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