Wind driven generator and method for controlling gear box lubricating and cooling system thereof

The invention discloses a wind driven generator. A gear box lubricating and cooling system comprises a common radiator and an auxiliary radiator which are arranged on a fan gear box lubricating oil way. An axial flow fan is arranged on the outer wall of a tower and/or a wind driven generator room, and introduces low-temperature air outside into the tower and/or the wind driven generator room. According to the wind driven generator, because the auxiliary radiator is added into the gear box lubricating and cooling system, the heat exchange area of a radiator assembly is increased, and the heat exchange capability of the radiator assembly is improved; because the low-temperature high-flow air outside is introduced into the wind driven generator room in a forced mode through the axial flow fan, the environment temperature inside the wind driven generator room is controlled, the heat exchange capability of the air-cooling radiators of the lubricating and cooling system is improved, and it is guaranteed that the whole fan can generate power normally with full power.