In this thesis “THERMOPLASTIC COMPOSITE WIND TURBINE BLADES AN INTEGRATED DESIGN APPROACH”(link) by Simon JONCAS, topology optimization is deployed to design a wind turbine blade. The thesis is quite long (273 pages), topology optimization related section is chapter 7. The results somehow resemble a previous work for aircraft wings. The final design implementations of the results are quite different than them, as implementation on such big structures can be very expensive.
The thesis is quite comprehensive and recommended for persons that will start working on wind turbines.