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Self-adaptive maximum power tracing control method for wind turbine generator set

A wind turbine, maximum power tracking technology, applied in the direction of wind engine control, wind engine, engine control, etc., to achieve the effect of ensuring dynamic performance indicators, improving operating efficiency and overall performance

Inactive Publication Date: 2019-09-06
STAR (CHONGQING) INTELLIGENT EQUIP TECH RES INST CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In view of this, the purpose of the present invention is to provide a kind of self-adaptive maximum power tracking control method for wind power generating set, to solve the wind power generating set running stability problem and maximum power tracking control under the situation of parameter uncertainty and disturbance in the system question

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  • Self-adaptive maximum power tracing control method for wind turbine generator set
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  • Self-adaptive maximum power tracing control method for wind turbine generator set

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Embodiment Construction

[0038] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0039] In this embodiment, the adaptive maximum power tracking control method for wind power generators includes the following steps:

[0040] Step 1: Establish a variable-speed wind turbine model. The variable-speed wind turbine in this embodiment is a direct-drive wind turbine. The modeling steps are as follows:

[0041] ①Aerodynamic model: According to aerodynamic theory, the power P captured by the wind turbine from the wind r Expressed as the following two formulas:

[0042]

[0043]

[0044] Among them, in the formula, v is the wind speed; λ is the tip speed ratio; ρ is the air density; R is the radius of the impeller rotation plane, C p is the power coefficient of the wind turbine. The starting torque captured by the unit can be expressed as:

[0045]

[0046] where T r is the aerodynamic torque, C T is the torque coefficient of th...

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Abstract

The invention discloses a self-adaptive maximum power tracing control method for a wind turbine generator set. The self-adaptive maximum power tracing control method comprises the steps of establishing a variable speed wind turbine generator set model, converting system errors into new errors through an error scaling function to obtain a performance index adjustable self-adaptive maximum power tracing control strategy, designing an electromagnetic torque controller and controlling the wind turbine generator set through the designed electromagnetic torque controller. According to the self-adaptive maximum power tracing control method, the problem of stable control cover a wind turbine generator set system under the conditions of parameter uncertainty and perturbation is solved, the dynamicperformance index of MPPT operation is ensured, the purpose of designing the MPPT speed of the set as required is achieved, and the operation efficiency and overall performance of the variable speed wind turbine generation system are improved.

Description

technical field [0001] The invention relates to the field of wind power generation, in particular to a maximum power tracking control technology of a variable speed wind power generating set. Background technique [0002] At present, with the vigorous development of the world economy, the demand for energy in various countries is increasing day by day. However, with the increasing depletion of traditional fossil energy, seeking renewable energy as an alternative energy has become a top priority for all countries. Among the many renewable energy sources, wind energy has been valued and favored by researchers all over the world due to its rich resources and mature technology. In recent years, with the rapid development of distributed power generation and smart micro-grid, wind energy, as one of its main micro-power sources, has a broader development space and potential. [0003] In the control system of the wind power generation system, the Maximum Power Point Tracking (MPPT...

Claims

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Application Information

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IPC IPC(8): F03D7/04
CPCF03D7/045F03D7/046F05B2270/1033Y02E10/72
Inventor 宋永端陈家伟蔡坤城宋清超何健葛康林婷赖俊峰
Owner STAR (CHONGQING) INTELLIGENT EQUIP TECH RES INST CO LTD
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