关键词: 双馈风力发电机, 转轴, 静强度, 疲劳强度, 校核, 结构工艺, 静应力仿真分析, 疲劳校核仿真分析

Abstract: The static strength and fatigue verification analysis of a certain model doubly fed induction generator(DFIG) shaft was carried out. Through static stress analysis, the stress level and distribution of the motor shaft were clarified, potential dangerous parts were identified, and the fatigue strength of the shaft was analyzed. Through static strength verification, the design margin and safety factor of the motor shaft under different load conditions were clarified, and it was verified whether the shaft met the requirements of low voltage crossing. Through the fatigue strength check, the fatigue safety factor of the shaft was given. The different construction technology of the shaft was compared and analyzed to find out the optimal technology structure.The influence of different materials on the fatigue strength of the shaft was compared and analyed to find the shaft material with the best cost performance. The static stress simulation analysis process and fatigue verification simulation analysis method provide a theoretical basis for the scientific and reasonable design of motors.

Key words: doubly fed induction generator(DFIG), shaft, static strength, fatigue strength, verification, construction technology, static stress simulation analysis, fatigue verification simulation analysis