关键词: 齿轮传动, 动载系数, 风力发电机, 可靠性, 优化设计

Abstract: The differential equations which govern the behavior of the gear transmission system of a 1.5 MW wind turbine are established, the external excitation caused by wind speed changes is discussed, and the internal excitation due to time-varying mesh stiffness and comprehensive error is also analyzed. Based on the presented models, the expression of the application factor and dynamic load factor are obtained. Optimization design model with minimal volume is described, in which the equal-strength principle and reliability are considered. The results demonstrate that the method presented is an effective way to enhance system reliability and reduce the weight and the volume.

Key words: Dynamic load factor, Gear transmission, Optimization design, Reliability, Wind turbine