CAJ | 학술논문

基于叶素动量理论，以各叶素的风能利用系数最大为优化目标，利用MATLAB优化工具箱对200 kW水平轴风力机叶片进行编程并求解。并借助MATLAB中的polyfit函数分别采用三阶和五阶多项式对叶片弦长和安装角进行拟合，得出整个叶片的气动外形。进行了气动性能及载荷计算，得出各叶素剖面上的空气动力载荷。取叶片上一微段，利用ANSYS的参数化建模及优化功能对叶片蒙皮、主梁和腹板的厚度进行优化设计，使叶片在满足强度要求的条件下质量最轻。结果表明：优化后质量较原来有所减少，降低了成本，为进一步研究提供了参考。
기우협소동량이론，이각협소적풍능이용계수최대위우화목표，이용MATLAB우화공구상대200 kW수평축풍력궤협편진행편정병구해。병차조MATLAB중적polyfit함수분별채용삼계화오계다항식대협편현장화안장각진행의합，득출정개협편적기동외형。진행료기동성능급재하계산，득출각협소부면상적공기동력재하。취협편상일미단，이용ANSYS적삼수화건모급우화공능대협편몽피、주량화복판적후도진행우화설계，사협편재만족강도요구적조건하질량최경。결과표명：우화후질량교원래유소감소，강저료성본，위진일보연구제공료삼고。
Based on the Blade Element Momentum Method and used the maximum of wind energy utilization coefficient as opti-mization objective,a 200 kW horizontal axis wind turbine blade was programmed and solved by using the MATLAB optimization tool-box. By used three and five order polynomial in virtue of polyfit function in MATLAB to fitting the chord length and installation angle respectively,the whole aerodynamic shape of the blade was gotten. Then the aerodynamic performance and load were calculated,and the aerodynamic load of each blade profile was obtained. Finally,a micro section of the blade was gotten,and optimized and designed the thickness of its skin,spar cap and web by using parametric modeling and optimization function of ANSYS,which made it to meet the lightest weight under the conditions of the strength requirements. The results show that the weight after optimization is less than the original. It reduces the cost and provides a reference for further study.