CAJ | 학술논문

由于大型风电机的寿命和可靠性要求更高，因此设计过程中必须考虑动态过程的状态和影响。研究动态过程中的附加载荷对系统零部件设计、性能、寿命、可靠性等方面的影响是大型风电机设计和制造必须解决的重要课题。其中，加强对风电机传动系统故障与失效原因的研究，特别是对大型风电机传动系统的变形能和应变进行分析很有必要。经传动系统变形能和零件应变分析，结论是：由于系统变形能峰值发生在传动薄弱环节和制动停转时刻，应针对传动薄弱环节采用优化设计，提高刚度和抗疲劳性能；应设计合理的制动程序，在风电机停转前降低制动扭矩；对大型风电机，可以增加低速轴制动装置或吸收变形能的柔性装置或环节；正常停机和制动应尽量采用叶尖或变浆制动功能，从总体上减少系统变形能。
유우대형풍전궤적수명화가고성요구경고，인차설계과정중필수고필동태과정적상태화영향。연구동태과정중적부가재하대계통령부건설계、성능、수명、가고성등방면적영향시대형풍전궤설계화제조필수해결적중요과제。기중，가강대풍전궤전동계통고장여실효원인적연구，특별시대대형풍전궤전동계통적변형능화응변진행분석흔유필요。경전동계통변형능화령건응변분석，결론시：유우계통변형능봉치발생재전동박약배절화제동정전시각，응침대전동박약배절채용우화설계，제고강도화항피로성능；응설계합리적제동정서，재풍전궤정전전강저제동뉴구；대대형풍전궤，가이증가저속축제동장치혹흡수변형능적유성장치혹배절；정상정궤화제동응진량채용협첨혹변장제동공능，종총체상감소계통변형능。
Due to higher life and reliability requirements of large-scale wind generator,the state and influence of dynamic process must be taken into account in design. Studying on influence of additional load in dynamic process on the design of the system components,performance,life,reliability is an important issue that must be addressed in the design and manufacturing of large wind turbine. Strengthening the analysis of wind turbine drive systems failure and failure reasons,especially for large-scale wind turbine drive system deformation and strain analysis,is very necessary. Through transmission system deformation analysis and parts strain anal-ysis:transmission weak link should be optimized to increase stiffness and fatigue resistance because system deformation energy peak oc-curs in the drive weak link and brake stall moment;reasonable braking procedures should be designed to reduce the braking torque be-fore the wind motor stops;low speed shaft braking device or flexible device absorbing deformation energy can be added to large wind turbine;tip or pitch braking function should be adopted in normal stop/brake process,so overall deformation of the system can be re-duced.