摘要
为解决叶片疲劳加载方式中激振设备存在一部分功率消损及选型困难等问题,提出了一种新的直驱式疲劳加载方式,并通过拉格朗日方法分别建立了离心式、往复式以及直驱式共振加载方式的动力学模型,在分析了各加载方式中激振设备所需参数的基础上,建立了各加载方式设备功率之间的关系,并通过推导功率比值系数,得到各加载方式设备所需最大功率与叶片共振功率之间的关系。实例分析结果表明,通过功率比值系数以及叶片必需共振功率可以快速求得三种加载方式的最大激振功率,且计算误差小于2.7%。直驱式加载方式的设备所需功率及能耗均小于其余两种加载方式,在叶片疲劳测试中,可根据实际测试场景优先选用直驱式共振加载方式。
In order to solve the problems of part of the power waste and difficulty in selection of the excitation equipment in the blade fatigue loading method,a new direct-drive fatigue loading method was proposed.The centrifugal,reciprocating and reciprocating methods were established by Lagrange method,the required parameters of the equipment in each loading method was analyzed,the relationship between the power of the equipment in each loading mode was established,and the power ratio coefficient was proposed to obtain the relationship between the maximum power required by the equipment in each loading method and the blade resonance power.The results show that the maximum excitation power of the three loading methods can be quickly obtained through the power ratio coefficient and the necessary resonance power of the blade,and the calculation error is less than 2.7%.The direct drive loading method requires less power and energy consumption than the other two loading methods.In the blade fatigue test,the testers can preferentially select the direct drive resonance loading method according to the actual test scenario.
作者
周爱国
施金磊
乌建中
ZHOU Ai-guo;SHI Jin-lei;WU Jian-zhong(School of Mechanical Engineering,Tongji University,Shanghai 200082,China)
出处
《科学技术与工程》
北大核心
2021年第1期158-164,共7页
Science Technology and Engineering
基金
国家重点研发计划(2018YFB1501200)。
关键词
风电叶片
共振
疲劳加载
加载方式
设备功率
wind turbine blades
resonance
fatigue test
loading methods
equipment power
