Exciter device and method for fatigue testing of a blade of a wind turbine
AssigneeSiemens Gamesa Renewable Energy A/S
InventorSoeren Christiansen
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Abstract
Provided is an exciter device for fatigue testing of a blade of a wind turbine, including a actuator for generating a periodic excitation force and a coupling device for coupling the actuator to a blade to be tested. The exciter device includes a pretensioning device applying a pretension such that the excitation force only acts in a pulling or pushing direction over the whole period.
Claims15
Exciter device (1, 1a, 1b, 1c, 1d, 1e, 1f) for fatigue testing of a blade (2) of a wind turbine, comprising an actuator, in particular a motor (3), for generating a periodic excitation force and a coupling device (6) for coupling the actuator to a blade (2) to be tested, characterised in that the exciter device (1, 1a, 1b, 1c, 1d, 1e, 1f) comprises a pretensioning device (13) applying a pretension such that the excitation force only acts in a pulling or pushing direction over the whole period.
Exciter device (1, 1a, 1b, 1c, 1d, 1e, 1f) according to one of the preceding claims, characterised in that it comprises a load cell (7), in particular connected to the control device (4).
Method for fatigue testing of a blade (2) of a wind turbine, wherein a periodic excitation force is generated by an actuator, in particular a motor (3), and applied to the blade (2) by a coupling device (6) for coupling the actuator to the blade (2), characterised in that a pretension is applied to the blade (2) such that the excitation force only acts in a pulling or pushing direction over the whole period.
Dependencies are inferred from the claim text.