Unloading device for vertical-axis wind turbine

Abstract

The invention discloses an unloading device for a vertical-axis wind turbine. The unloading device comprises a disk generator, wherein the disk generator is arranged on a wind turbine. According to the unloading device for the vertical-axis wind turbine, high torque generated by the high-current wind turbine is applied to a blade shaft to fulfill the aim of strong wind deceleration of the wind turbine, and an unloading resistor cabinet is replaced; due to the adoption of a disk structure, the device is small in floor area, convenient to mount, low in machining cost and stable in performance; the addition of a load to the wind turbine is not required, so that influence on the performance and service life of the wind turbine is avoided; redundant energy generated by wind energy can be converted into electric energy for utilization, so that the device is diversified, and the utilization rate of the wind energy is increased.

Description

technical field [0001] The invention relates to an unloading device of a wind power generator, in particular to an unloading device of a vertical wind power generator. Background technique [0002] With the popularization of new energy sources, wind turbines are no longer a new term and have been accepted by the masses. The production technology of wind turbines has also developed rapidly in recent years. The power generation efficiency of wind turbines and the utilization rate of wind energy have become the key indicators for the wind power industry to reduce product costs and improve product performance. [0003] The general working wind speed range of wind turbines is between 3-30m / s wind speed, and 30m / s is the braking state. 3-15m / s is the start-up rated wind speed of the fan. Within this wind speed range, the fan will perform normal power generation work; 13-30m / s is the limited speed of the fan. Within this wind speed range, the fan works at unloading and speed reduc...

AI Technical Summary

Problems solved by technology

[0005] (1) Unloading and speed reduction serve the purpose of speed reduction, but increasing the output load of the wind turbine will increase the winding current, which is far greater than the rated generating current, the temperature of the generator will rise rapidly, and the life of the generator will be greatly affected. big impact

[0006] (2) In the mode of unloading and speed reduction, the electricity generated by the wind turbine that exceeds the rated power will be shunted to the unloading resistor, and unloaded by converting electrical energy into heat energy, resulting in waste of resources

[0007] (3) There are many unloading resistors to form an unloading cabinet. The volume is proportional to the power of the generator. Generally, when working indoors or in an environment with thunderstorm protection measures, the existence of the unloading cabinet will undoubtedly increase the duty cycle.

Images