Assertion: turbine's speed | /r/HasProperty | synchronous generators
Facets:
Source sentences:
text: As recently as 2003, nearly all grid-connected wind turbines operated at exactly constant speed (synchronous generators) or within a few percent of constant speed (induction generators).
text: High shaft speeds in smaller "free turbine units", although larger gas turbines employed in power generation operate at synchronous speeds.
text: As of 2003, nearly all grid-connected wind turbines operate at an exactly constant speed (synchronous generators) or within a few percents of constant speed (induction generators).