Wind Turbine Global Design Technology And Design Software Development

Modern large-scale wind turbine design is a multidisciplinary issue, therefore, wind turbine global design must consider the structural layout, structural dynamics optimization, system reliability and the interaction in various factors. Wind turbine global design technology include: (1) wind turbine dynamic aerodynamic theory and aerodynamic optimum design methods, (2) the aeroelastic model and analysis methods of wind turbine load calculation, (3) wind turbine stability and reliability theory under extreme conditions, (4) wind turbine global structure layout optimum design theory and methods, (5) wind turbine structural dynamics analysis, structural fatigue testing, vibration testing mechanism and the experimental platform,construction, and so on.In this paper, the structure and operation characteristics of modern wind turbine, based on wind turbine running environment and international standards, are analysed firstly, the wind turbine load calculation and the interaction of the various loads are figured out, and the wind turbine load transfer model is established.The basic study of wind turbine global design technology is a key scientific problem which is urgent to be resolved. In this paper, there is a preliminary study to wind turbine global design technology and its system layout, the calculation methods of wind turbine global design parameters are figured out, the scheme design of wind turbine general layout and the relationship between transfer loads and the global performance are studied.Based on finite element method, in the paper, a structural dynamics model of wind turbine is established, which can analyse the dynamic performance of wind turbine components and whole wind turbine. Thereby, a complete wind turbine dynamic model has being established, which includes the wind model, aerodynamics calculation and structural dynamic analysis.Make use of the above research results, the paper develops the corresponding calculation codes and integrated the codes as a wind turbine full system load analysis and design optimum software HAWTDesign. The software has been successfully aplied to 1.5 MW wind turbine analysis. The results show that HAWTDesign software is reliable, can be applied commendly to the global design of wind machines.