Stepless speed-up type wind power generation system

Abstract

An embodiment of the invention discloses a stepless speed-up type wind power generation system. A wind wheel is connected with a stepless speed regulating mechanism through a spindle, the stepless speed regulating mechanism is connected with a three-level differential planet gear speed-up mechanism through a first-stage planet carrier of the three-level differential planet gear speed-up mechanism, the three-level differential planet gear speed-up mechanism is connected with a generator through a high-speed shaft, input energy of the wind wheel is wind energy, output kinetic energy of the wind wheel is input into the spindle, output kinetic energy of the spindle is input to the stepless speed regulating mechanism, the stepless speed regulating mechanism can control and change an input rotating speed continuously in a stepless mode, stabilizes an output rotating speed and outputs the speed to the follow-up three-level differential planet gear speed-up mechanism, the three-level differential planet gear speed-up mechanism transmits input power to the high-speed shaft through speed-up transmission with a certain transmission ratio, the rotating speed of the high-speed shaft is the same as the rotating speed of the generator so as to output the kinetic energy into the generator, and the generator converts the energy input by the high-speed shaft into electric energy and sends the electric energy to a power grid.

Description

technical field [0001] The invention belongs to the new energy technology field of wind power generation, and in particular relates to a stepless speed-increasing wind power generation system. Background technique [0002] At present, the energy conversion device of the existing wind power generation system is a multi-stage speed-increasing gearbox structure. However, the transmission ratio of the gearbox is a fixed value and cannot be changed with the change of wind speed. At the same time, the failure rate of the gearbox is relatively high. And maintenance is inconvenient. [0003] The wind rotor of the direct-drive wind turbine is directly connected to the generator. Although there is no fault of the gearbox, the number of pole pairs of the direct-drive motor is too large, the volume is large, the cost is high, and the weight is relatively heavy, which is not easy to operate. Hoisting. [0004] Variable speed and constant frequency technology is a newly developed wind p...

AI Technical Summary

Problems solved by technology

The variable speed and constant frequency method of the existing wind power system adopts the electrical control method, which requires expensive rectification and inverter equipment. This type of equipment not only has a relatively large energy loss, but also makes the structure of the power generation system huge and complicated. The electrical control system The reliability of high-power speed regulation is relatively poor, and the structure is very complicated

Images