4 FAQs about Alignment of wind turbine gearbox and generator

Why should a wind turbine shaft be aligned?

Properly aligned shafts are able to spin freely and not induce other unwanted forces to the system. These unwanted forces will damage and/or destroy bearings, seals, and couplings, and eventually the gearbox or generator. Precision alignment is recommended by most wind turbine manufacturers for optimal operation and reliability.

How to align a wind turbine?

Removing the coupling and using the specially designed brackets is the safest way to perform an alignment of a wind turbine. These systems are intended for use during installation but also for continuous maintenance work in the field. They are therefore well suited to the requirements of service companies.

How does a gearbox work in a wind turbine?

A gearbox is used in wind turbines to increase the rotation speed given to the generator shaft. It involves two or more gears that increase the speed from the rotational input, allowing the wind turbine to produce a higher electrical output power.

How fast should a wind turbine be aligned?

Check with the turbine manufacturer for specific safety requirements, but generally the brake should be engaged, dead bolts locked, blades pitched at 9:00, and the nacelle up against the wind. Alignment should not be tried in wind speeds ~over 8 m/s. Does tower movement affect alignment measurements? All movement can affect the laser measurements.

View/Download Alignment of wind turbine gearbox and generator [PDF]

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