CAJ | 학술논문

在风力机优化设计过程中,考虑法向力和切向力的叶尖损失,基于一维的动量叶素理论及传统的风力机空气动力学原理,推导并给出新的风力机轴向和周向因子的计算模型.探讨风力机成本和输出能量之间的关系,得到风力机成本及其年输出能量的计算模型,进而建立风力机单位输出能量成本的数学模型,以其为优化设计目标,以叶片的形状参数弦长、扭角和相对厚度为优化设计变量,提出叶片的优化设计数学模型.最后,应用该优化模型对某2 MW风力机叶片进行优化设计,并对优化结果进行比较分析,验证了优化叶片的工作性能,很好地实现了风轮单位能量成本的降低.研究成果为大功率风力机叶片的设计开发提供了理论依据,奠定了风力机叶片的研究和工业应用前景.
재풍력궤우화설계과정중,고필법향력화절향력적협첨손실,기우일유적동량협소이론급전통적풍력궤공기동역학원리,추도병급출신적풍력궤축향화주향인자적계산모형.탐토풍력궤성본화수출능량지간적관계,득도풍력궤성본급기년수출능량적계산모형,진이건립풍력궤단위수출능량성본적수학모형,이기위우화설계목표,이협편적형상삼수현장、뉴각화상대후도위우화설계변량,제출협편적우화설계수학모형.최후,응용해우화모형대모2 MW풍력궤협편진행우화설계,병대우화결과진행비교분석,험증료우화협편적공작성능,흔호지실현료풍륜단위능량성본적강저.연구성과위대공솔풍력궤협편적설계개발제공료이론의거,전정료풍력궤협편적연구화공업응용전경.
For the optimization design of wind turbines, the new normal and tangential induced factors of wind turbines are given considering the tip loss of the normal and tangential forces based on the blade element momentum theory and traditional aerodynamic model. The cost model of the wind turbines and the optimization design model are developed. In the optimization model, the objective is the minimum cost of energy and the design variables are the chord length, twist angle and the relative thickness. Finally, the optimization is carried out for a 2 MW blade by using this optimization design model. The performance of blades is validated through the comparison and analysis of the results. The reduced cost shows that the optimization model is good enough for the design of wind turbines. The results give a proof for the design and research on the blades of large scale wind turbines and also establish the foundation for further research and industrial application of wind turbines.