Wind power generation hydraulic control shifting voltage stabilizer

Abstract

The invention belongs to the technical field of wind power generation and relates to a wind power generation hydraulic control shifting voltage stabilizer. According to the wind power generation hydraulic control shifting voltage stabilizer, automatic gearshift can be achieved, and the range of wind speed adaptation of a wind motor is remarkably improved. The wind power generation hydraulic control shifting voltage stabilizer comprises a three-level planet gear transmission mechanism, a gearshift actuating mechanism, a hydraulic control system, a speed increaser and an adjustable torque converter, a first level sun wheel is connected with a driving disc of a direct gear clutch, a first level gear ring is connected with a second level planetary frame, a second level gear ring is connected with a third level planetary frame, a first level planetary frame, a driven disc of the direct gear clutch and a second level sun wheel are respectively connected with an output shaft of the speed increaser, a centrifugal speed regulating valve is arranged on the output shaft of the speed increaser, a speed increasing gear brake is arranged on the side of the driving disc of the direct gear clutch, a third level gear ring is connected with a turbine of the torque converter, a third level sun wheel and a pump wheel of the torque converter are respectively connected with a generator input shaft, and each level of planet wheels is meshed with one corresponding sun wheel and one corresponding gear ring which are at the same level and is connected with one corresponding planetary frame at the same level through a bearing.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to an automatic gear shifting and voltage stabilizing device for a gearbox of a wind turbine, and a newly added automatic gear shifting and its hydraulically controlled shifting and voltage stabilizing device. Background technique [0002] Variable-speed wind generators are widely used in wind power generation, but the biggest disadvantage of this system is that a frequency conversion device needs to be installed between the generator and the grid. This device is expensive and loses considerable energy, which has a strong impact on the grid. In view of the above shortcomings, some new transmission concepts have been proposed, so that the energy conversion system is no longer used in the system, and the generator is directly connected to the grid. There are the following methods: 1. Provide a hydraulic transmission system composed of a hydraulic pump, a hyd...

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Problems solved by technology

[0004] Aiming at the problem that the wind speed range of the existing winddrive gearbox is not large and the working efficiency of the hydraulic torque converter cannot be guaranteed at a high level, the present invention provides a hydraulically controlled gear shifting and voltage stabilizing device for wind power generation; the device can automatically shift gears , making the wind turbine adapt to the wind speed range greatly improved

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