Semi-direct-drive tandem double-wind-wheel wind turbine generator set

Abstract

The invention discloses a semi-direct-drive tandem double-wind-wheel wind turbine generator set which comprises a double-rotor generator, the double-rotor generator is sequentially provided with an outer rotor, an outer stator, a magnetic isolation layer, an inner stator and an inner rotor from outside to inside, and the outer rotor is arranged on the outer stator in a sleeving mode to form a front wind wheel generator. The inner stator is arranged on the inner rotor in a sleeving mode to form a rear wind wheel generator, and the front wind wheel generator is arranged on the rear wind wheel generator in a sleeving mode. Complete decoupling is achieved in structure, electromagnetism and control, so that cooperative control over the rotating speed of the two wind wheels is achieved, the optimal overall output of the set serves as the target, the wind energy utilization rate is increased, the wind wheel diameter is reduced, the kilowatt-hour cost of the wind turbine generator set is reduced, and the overall efficiency of the set reaches the highest.

Description

technical field [0001] The invention belongs to the technical field of wind power generating sets, in particular to a semi-direct drive serial double wind turbine wind generating set. Background technique [0002] With the rapid development of wind power installed capacity, the current mainstream wind turbines adopt the form of single wind turbine horizontal axis, and are developing towards large-scale development. However, with the large-scale development of wind turbines, their core key technologies are subject to many restrictions, and there is an urgent need to develop new forms. High-efficiency wind energy conversion device. [0003] The tandem double-wind rotor structure is valued for its high efficiency and mature key core equipment. However, the currently reported double wind turbines use two wind rotors coaxial or connected to the main shaft through a bevel gear. The realization of decoupling leads to the inability of the two wind rotors to operate in their respec...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the tandem double-wind turbines in the prior art cannot be decoupled in operation and the operating efficiency is low, the present invention provides a semi-direct drive tandem double-wind turbine wind turbine with decoupling of transmission. Complete decoupling is achieved in terms of structure, electromagnetic, and control, so as to realize the coordinated control of the speed of the two wind rotors. The goal is to optimize the overall output of the unit, improve the utilization rate of wind energy, reduce the diameter of the wind rotor, and reduce the cost of electricity per unit of wind turbines. The overall efficiency reaches the highest

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