A collaborative control method for tandem double-wind turbine wind turbines

Abstract

The invention discloses a coordinated control method for a tandem type double-wind turbine wind generator set, which belongs to the technical field of wind power control. Aiming at the problem that the current tandem twin wind turbines cannot be decoupled in operation and the operating efficiency is low, a coordinated control strategy for the front and rear wind turbines of the tandem twin wind turbines with transmission decoupling is proposed. Firstly, by dividing the front and rear After the operating range of the wind rotor and the optimal output value are determined, the output of the front and rear wind rotors is controlled cooperatively by adjusting the speed and pitch angle of the front and rear wind rotors with the goal of maximizing the overall output of the wind turbine. The invention takes the highest efficiency of the whole unit and the lowest load as the control target, and the synergy between the front and rear wind wheels makes the unit more efficient, the high-efficiency area is wider, and the grid connection is more friendly, which can greatly reduce the cost per kilowatt-hour of the wind turbine and improve the efficiency of the unit. On-grid features.

Description

technical field [0001] The invention belongs to the technical field of wind power control, and in particular relates to a coordinated control method for a tandem double wind turbine wind turbine. 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, in the existing reported double wind turbines, the two wind rotors are coaxial or connected to the main shaft through bevel gears. The two wind rotors of the structure can only rotate at the same speed, and cannot r...

AI Technical Summary

Problems solved by technology

However, the existing reported double wind turbines use two wind rotors coaxial or connected to the main shaft through bevel gears.

The two wind rotors of the structure can only rotate at the same speed, and cannot realize the independent operation of the two wind rotors and the coordinated control of the front and rear wind rotors, which leads to the inability of the two wind rotors to operate in their respective high-efficiency zones, resulting in low overall efficiency of the unit

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