Study Of Planetary Gearbox And Finite Element Analysis Of Planetary Gear For Multi-megawatt In Wind Turbines

Along with the modern multi-megawatt grade wind generator sets being in vogue, it is request higher and higher for the gearbox. It is based on guarantying gearbox's reliance for the design requirements, gearbox's weight and volume must be reduced to maximum degree. This article has discussed structural styles about multi-megawatt in wind turbines planetary gearbox,and determined the smallest weight of the power splitting differential gearbox as the use of structural optimization. At the same time, for the power splitting differential gearbox the characteristics of compact structure,according to balanced specific sliding and flash temperature for the planet gear,the parameters of planetary gear can be optimized,gears can improved wear resistance and scuffing resistance. Simultaneously studied based on the misalignment contact theory, the optimized sun gear and planet gear can determine teeth surface contact stress distribution, all methods has provided the reliable basis design for multi-megawatt grade wind turbine gearbox. At the same time, it is the first time studied flash temperature and specific sliding influence to planet gear performance for multi-megawatt grade in wind turbine gearbox.