Wind turbine generator with fluid film bearing units

摘要

A generator for a wind turbine is disclosed. The generator comprises a rotor configured to rotate about a rotational axis, and at least one stator arranged next to the rotor. Each stator comprises at least one flux-generating module facing the rotor but spaced therefrom, thereby forming an air gap between the rotor and each flux-generating module. Each stator also comprises at least one bearing unit, each bearing unit comprising a body defining a cavity with an open end facing the rotor. The generator further comprises a source of pressurized fluid communicating with each bearing unit, and the body of each bearing unit directs the fluid towards the rotor to help maintain the air gap between the rotor and each flux-generating module. Thereby the air gap between the rotor and the flux-generating modules is controlled by means of the fluid bearing units. The invention further provides a wind turbine comprising such a generator.

主权项

1. A generator for a wind turbine, the generator comprising:
a rotor configured to rotate about a rotational axis, at least one stator arranged next to the rotor, each stator comprising at least one flux-generating module facing the rotor but spaced therefrom, thereby forming an air gap between the rotor and the at least one flux-generating module, and at least one bearing unit, the at least one bearing unit comprising a body defining a cavity with an open end facing the rotor, and a source of pressurized fluid communicating with the at least one bearing unit, wherein the body of the at least one bearing unit directs the fluid towards the rotor to help maintain the air gap between the rotor and the at least one flux-generating module, wherein the at least one bearing unit further comprises a first bearing unit and a second bearing unit respectively arranged above and below the at least one flux-generating module.