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AssigneeGeneral Electric Renovables Espana, S.L.
InventorsAlio Medina Diaz, Josep Bosch Collado, Javier Bescos Grillo, Pedro Palomares Rentero, Ignasi Vega Boada
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The present disclosure is related to pitch systems for blades of wind turbines. The pitch system comprises a pitch bearing having a first bearing ring connected to a hub of the wind turbine, and a second bearing ring connected to a blade. The pitch system also includes an annular gear and a pitch drive having a motor, a gearbox, a main brake, and a pinion. In addition, the pitch system includes an auxiliary brake system comprising an auxiliary brake and an auxiliary pinion to engage with the annular gear, where the auxiliary brake is configured to switch between an active state, wherein braking forces are applied to the annular gear to maintain the blade in an instantaneous position, and an inactive state. The present disclosure further relates to wind turbines comprising such pitch systems and methods for applying an emergency pitch braking torque to a pitch system.
A pitch system for a blade of a wind turbine, comprising:
A method for applying an emergency braking torque to a pitch system of a blade of a wind turbine, the pitch system including a pitch drive, the pitch drive including a motor, a gearbox, a main brake, and a pinion engaged with an annular gear of the pitch system, the method comprising:
Dependencies are inferred from the claim text.