General Electric Renovables Espana, S.l.

Alio Medina Diaz

Pedro Palomares Rentero

Javier Bescos Grillo

Joel Maignan

Xavier Santacruz Rodriguez

Victor Manuel García Molina

Josep Bosch Collado

Ignasi Vega Boada

Victor Manuel Garcia Molina

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.

Pitch systems for blades of wind turbines and associated methods

The present disclosure relates to pitch assemblies and methods for determining one or more pitch references for a pitch control system of a wind turbine. The assembly comprises a wind turbine hub; a pitch bearing including a hub bearing ring configured to be attached to a hub flange and a blade bearing ring configured to be attached to a wind turbine blade; a target configured to be attached to one of the blade bearing ring and the hub; and a sensor configured to be connected to the other of the wind turbine hub and the blade bearing ring, and configured to sense the target such that a position of the target with respect to the sensor can be determined.

Pitch assembly and related methods

The present disclosure relates to wind turbines comprising a tower, a nacelle mounted on the tower, a wind turbine rotor with a plurality of blades, and a wind turbine generator operatively coupled with the wind turbine rotor. The wind turbine further comprise one or more auxiliary wind energy converters arranged with the nacelle. The present disclosure further relates to methods for providing power to an auxiliary system of a wind turbine.

Back-up power supply for wind turbines

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Barcelona, Spain

Alio Medina Diaz