Trends in turbine hydraulics

摘要

The wind-energy industry makes good use of hydraulics, in particular how well it combines power density and durability for the muscle needed to pitch turbine blades that easily weigh two to three tons. In recent years, however, most utility-scale wind turbines for land installations have turned to electromechanical systems for this function. Electromechanical systems typically allow better packaging efficiencies, plug-and-play electronic control, and a lesser likelihood of fluid leaks. Over the last few years, several design trends are reshaping how turbine designers apply hydraulics.