Maximum power tracking control method of variable speed and variable pitch wind generating set based on feedforward decoupling control

A wind turbine, maximum power tracking technology, applied in the control of wind turbines, wind turbines, wind power generation, etc., can solve the problem of not being able to efficiently achieve optimal maximum power tracking control, aerodynamic torque fluctuations, and not considering the transmission characteristics of the transmission system Impact and other issues

Active Publication Date: 2013-10-23
北京能高普康测控技术有限公司
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AI Technical Summary

Problems solved by technology

[0007] For the traditional maximum power tracking control, the transmission system is relatively ideally considered in the control strategy, and the influence of each link of the transmission system and the transmission characteristics is not considered. At the same time, due to the fluctuation and randomness of the wind speed, the aerodynamic torque generated by the wind rotor after receiving the wind Fluctuation has strong uncertainty, so there is a certain deviation from the optimal control torque trajectory in the actual control process, and the optimal maximum power tracking control cannot be efficiently realized

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  • Maximum power tracking control method of variable speed and variable pitch wind generating set based on feedforward decoupling control
  • Maximum power tracking control method of variable speed and variable pitch wind generating set based on feedforward decoupling control
  • Maximum power tracking control method of variable speed and variable pitch wind generating set based on feedforward decoupling control

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Embodiment Construction

[0084] Calculate the total moment of inertia of the low-speed shaft of the transmission system according to the distribution of the mass distance between the blades and the hub of the variable-speed and variable-pitch wind turbine from the center of rotation ; Calculate the total moment of inertia of the high-speed shaft of the transmission system according to the distribution data of the rotor mass distance from the rotation center of the variable-speed variable-pitch wind turbine generator , generally speaking, the relative moment of inertia of the transmission shaft or gearbox is very small and can be approximately ignored.

[0085] Obtain the blade airfoil data of variable speed and variable pitch wind turbines, and calculate the optimal resistance torque parameters of the wind rotor below the rated wind speed according to the momentum-blade element theorem, finite element calculation method or relevant commercial calculation software .

[0086] The relevant data of th...

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Abstract

The invention discloses a maximum power tracking control method of a variable speed and variable pitch wind generating set based on feedforward decoupling control. According to the method, by estimating an aerodynamic moment of a wind wheel, an aerodynamic moment feedforward decoupling controller is designed based on an electromagnetic moment response model and a driving system model of the wind generating set according to an estimated aerodynamic moment result, so that a dynamic tracking influence on an optimal resistance moment due to the randomness and the uncertainty of an external aerodynamic moment is eliminated effectively; a resistance moment at a connecting part between a wheel hub and a low speed shaft of a spindle can be completely subjected to closed-loop control of an electromagnetic moment; accurate dynamic tracking of the optimal resistance moment is achieved efficiently; and the maximum power trackability of the wind wheel is improved effectively.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and relates to a maximum power tracking control method for a variable-speed variable-pitch wind power generating set below a rated wind speed. Background technique [0002] Wind energy is currently the most economically valuable renewable energy source. According to the "China Wind Power Development Roadmap 2050" issued by the Energy Research Institute of the National Development and Reform Commission, China's wind power development goals for the next 40 years: by 2020, 2030 and 2050, wind power installed capacity The capacity will reach 200 million, 400 million and 1 billion kilowatts respectively, and by 2050, wind power will meet 17% of domestic electricity demand. [0003] At present, wind turbines have become the main equipment for wind energy utilization, and variable-speed variable-pitch wind turbines are the mainstream type of wind turbines. [0004] Variable-speed variable...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D7/00
CPCY02E10/723Y02E10/72
Inventor 贾利民刘展雷涛
Owner 北京能高普康测控技术有限公司
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