Patent ID: 9641050
Date: 2017-05-02
CPC Classifications: F03D,F05B,G06F,H02K,Y02E

Claim:
1. A wind turbine generator, comprising: a rotor, a stator and an air gap between a gap-delimiting region of the stator and a gap-delimiting region of the rotor; wherein, in the absence of operational loads, the air gap has a varying width between the gap-delimiting regions of the stator and the rotor; wherein one or both of the rotor and the stator are deformable under operational loads; wherein one or both of the gap-delimiting region of the stator and the gap-delimiting region of the rotor having, in the absence of the operational loads, one or more non-circular cross-sections with respect to a rotational axis of the rotor that results in the air gap having substantially the same width upon deformation of the rotor or the stator under the operational loads; wherein the non-circular cross-section is due to at least one local protrusion of the following types of arrangements: