Optimization Design of Wind Turbine Rotors Based on Energy Cost

摘要：

In the development of new large megawatt size wind turbines, aerodynamic and structural optimizations have become interesting and important subjects for optimizing the energy yield of wind turbines. This paper presents a new design tool for optimizing wind turbine blades based on the BEM (Blade-Element Momentum) theory and aerodynamics. The objective of the optimization model is the minimum cost of energy which is calculated from the Annual Energy Production (AEP) and the cost of the rotor. The design variables used in the current study are the blade shape parameters, including chord, twist and relative thickness. To illustrate the optimization technique, one wind turbine rotors NREL 5MW virtual rotor are applied. The results show that the optimization model can reduce the cost of energy of the original rotor. The results demonstrate that optimization tools in the case represent a valuable tool for the design of wind turbines to achieve the most efficient design. Although we only considered optimization of blades, the cost of the tower is also reduced because the axial force and the deflection of the blades are decreased after the optimization.

关键词： Wind Turbine Rotor Aerodynamics Energy Cost Optimization Design

作者: Jin Chen Xudong Wang

作者单位: State Key Laboratory of Mechanical Transmission, ChongQing University, 400030, P.R. China

会议类型: 国际会议

会议名称: The First World Congress on Global Optimization in Engineering & Science(第一届工程与科学全局优化国际会议 WCGO2009)

会议地点: 长沙

会议语种:英文

页码: 307-314

在线出版日期: 2009-06-01（万方平台首次上网日期，不代表论文的发表时间）