关键词: 双馈风力发电机, 转轴, 三维建模, 静强度, 疲劳强度, 校核

Abstract: When the doubly fed induction generator(DFIG) carries out low voltage crossing, the sudden change of power grid voltage and the sudden change of converter control strategy may lead to the shortening of the mechanical life of mechanical components such as wind turbine shafts, or serious damage. Before the static strength and fatigue verification of the shaft of DFIG, it is necessary to carry out three-dimensional modeling of the motor shaft, involving the division of the model mesh, preliminary result analysis and result optimization. The modeling is an important basis for static strength analysis and fatigue verification of motor shafts.

Key words: doubly fed induction generator(DFIG), shaft, three-dimensional modeling, static strength, fatigue strength, verification