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PROF. CARLO LUIGI BOTTASSO, Chair of Wind Energy, Founding Institute Director, Wind Energy Institute, Technical University of Munich
Wind Turbine Main Shaft Brake: Frictional forces
While the rotation of the rotor of the wind turbine can be slowed by changing the pitch angle of the blades during aerodynamic braking, the rotor needs a mechanical main shaft brake to keep it stopped completely. Frictional force is an essential physics concept that will help explain the working mechanism of the main shaft…
Issues for high wind energy penetration electric power grids
James McCalley, Harpole Professor of Electrical & Computer Engineering,Iowa State University, Ames, Iowa