Planetary Load Sharing in Three-Point Mounted Wind Turbine Gearboxes [electronic resource] : A Design and Test Comparison

• Ngôn ngữ: eng
• Ký hiệu phân loại: 621.821 Journals
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2017
• Mô tả vật lý: Size: 20 p. : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 258292
• Chủ đề: 1. 17 wind energy; 2. Gearbox; 3. Load-sharing; 4. Planetary bearing; 5. Wind turbine

Tóm tắt

This work compares the planetary load-sharing characteristics of wind turbine gearboxes supported by cylindrical roller bearings (CRBs) and preloaded tapered roller bearings (TRBs) when subjected to rotor moments. Planetary bearing loads were measured in field-representative dynamometer tests and compared to loads predicted by finite-element models. Preloaded TRBs significantly improved load sharing. In pure torque conditions, the upwind planet bearing load in the gearbox with preloaded TRBs was only 14% more than the assumed load compared to 47% more for the gearbox with CRBs. Consequently, the predicted fatigue life of the complete set of planetary bearings for the gearbox with preloaded TRBs is 3.5 times greater than that of the gearbox with CRBs.