Optimization Analysis of Permanent-Magnet Direct-Drive Wind Turbine Elbow Shape Nacelle

Abstract

[Introduction] In view of the irregular geometric shape, complex load and heavy weight of the nacelle of a permanent magnet direct drive wind turbine, it is necessary to optimize the analysis and design. [Method] Based on the finite element analysis of the geometric parameters of the nacelle and the calculation results of the shape of the elbow, the finite element analysis was established. [Result] After optimization, the maximum von Mises stress of the nacelle is reduced from 181 MPa to 173 MPa, and the stress is reduced by 4.4%, which meets the strength requirements. The weight of the nacelle is reduced by 14.2% from 52.7 tons to 45.2 tons. [Conclusion] The research shows that the optimization effect is obvious, which provides a reference for the design and optimization method of such nacelle of wind turbine.

Keywords

• permanent magnet direct drive
• wind turbine
• nacelle
• weight
• optimization