Abstract
A feasibility study has been performed for stator concept design and manufacturing of an 8 MW 11 RPM direct drive high temperature superconducting (HTS) generator. The new developments and studies have proven that the stator design concepts can be applied to multi-mega-watts rated direct drive wind turbine generators. The novel skewed stator design almost eliminates the cogging torque and minimizes the rotor HTS requirements. Electromagnetic, mechanical, thermal and insulation developments performed for the concept design are described in the paper. A wound stator section called statorette has been manufactured to prove the feasibility of a very large diameter stator for a production wind turbine generator. A multi-stress test facility has been developed to validate the developed design concepts.
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