CAJ | 학술논문

针对当前兆瓦级风电齿轮增速箱在风电机组中损坏率较高的问题，提出了一种新的、有效的风电齿轮可靠度计算方法。以某2．0MW风电齿轮箱中的太阳轮为研究对象，运用有限元分析软件分析其接触疲劳寿命，根据受到随机变幅接触疲劳载荷作用时循环次数对可靠度的影响，建立齿轮疲劳累积损伤计算模型，结合等效正态分布法求得其可靠度。此方法考虑了疲劳累积的影响，得到的结果相对于传统方法更符合实际变载荷工况，为风电齿轮传动系统的可靠性优化设计提供了理论依据，具有工程应用价值。
침대당전조와급풍전치륜증속상재풍전궤조중손배솔교고적문제，제출료일충신적、유효적풍전치륜가고도계산방법。이모2．0MW풍전치륜상중적태양륜위연구대상，운용유한원분석연건분석기접촉피로수명，근거수도수궤변폭접촉피로재하작용시순배차수대가고도적영향，건립치륜피로루적손상계산모형，결합등효정태분포법구득기가고도。차방법고필료피로루적적영향，득도적결과상대우전통방법경부합실제변재하공황，위풍전치륜전동계통적가고성우화설계제공료이론의거，구유공정응용개치。
Concerning the high failure problem of accelerating gearboxes in megawatt wind turbines ,a new effective calculating method for reliability is proposed .Sun gear of 2.0MW wind turbine gearbox is selected as the research object .A 3D model for sun gear and planet gear is built by UG ,then the contact fatigue life is analyzed by finite element analysis software .Based on cycle life’ s influence to reliability when effected by random variable amplitude contact fatigue loading ,an accumulate damage model is established,combining equivalent normal distribution method to calculate the sun gear ’ s reliability.The new method has taken the impact of cumulative fatigue into account ,so it will more conform to the actual work situation ,and can provide theoretical ba-sis and guidelines for industrial applications of the optimization design of wind generator transmission system .