CAJ | 학술논문

选取指数律函数描述平均风速，运用基于自回归模型的线性滤波法建立的风速模型模拟自然界随机风速。根据动量矩定理和简单的弹簧质量阻尼模型建立风力发电机组传动系统刚性传动模型及柔性传动模型来描述系统动态特性。以5 MW 变速变桨距风力发电机组参数为依据，计算随机风速下两种不同传动模型对风轮叶片以及发电机转子的动态响应的影响，并对结果进行对比分析。基于柔性传动模型，研究不同主轴刚度对传动系统动态响应的影响，得出最佳主轴刚度，并利用雨流计数法描述不同主轴刚度下风力发电机组传动系统的动态响应。研究结果可为风力发电机组传动系统动态特性的研究提供载荷数据。
선취지수률함수묘술평균풍속，운용기우자회귀모형적선성려파법건립적풍속모형모의자연계수궤풍속。근거동량구정리화간단적탄황질량조니모형건립풍력발전궤조전동계통강성전동모형급유성전동모형래묘술계통동태특성。이5 MW 변속변장거풍력발전궤조삼수위의거，계산수궤풍속하량충불동전동모형대풍륜협편이급발전궤전자적동태향응적영향，병대결과진행대비분석。기우유성전동모형，연구불동주축강도대전동계통동태향응적영향，득출최가주축강도，병이용우류계수법묘술불동주축강도하풍력발전궤조전동계통적동태향응。연구결과가위풍력발전궤조전동계통동태특성적연구제공재하수거。
Exponential function was used to describe the average wind speed,and the auto-regres-sive method was used to simulate nature random wind speed.Based on the moment of momentum the-orem and simple spring-mass-damping model,the rigid drive model and flexible drive model of a wind turbine transmission system were established to describe the dynamic characteristics of the system. According to the parameters of 5 MW variable speed and variable pitch wind turbine,the influences of the two different drive trains on the dynamic response of rotor blade and generator rotor under the random wind speed were calculated and analyzed and the results of dynamic response were compared. Based on flexible transmission system model,the influences of different main shaft stiffnesses on the dynamic response of transmission system were discussed to obtain the optimum main shaft stiffness, and rainflow counting method was utilized to describe the dynamic response of transmission system under different main shaft stiffnesses.The results provide load data for the research of dynamic char-acteristics of transmission system of wind turbine.