An intelligent optimization design method for a low-wind-speed wind turbine generator wind wheel

A wind turbine, optimized design technology, applied in the direction of calculation, electrical digital data processing, special data processing applications, etc., can solve problems such as structure and cost without consideration, reduce blade root load, reduce power cost, and efficiently design blades Effect

Active Publication Date: 2019-03-01
GUODIAN UNITED POWER TECH
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Problems solved by technology

This method only considers the aerodynamic design, and does not conside...

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  • An intelligent optimization design method for a low-wind-speed wind turbine generator wind wheel
  • An intelligent optimization design method for a low-wind-speed wind turbine generator wind wheel
  • An intelligent optimization design method for a low-wind-speed wind turbine generator wind wheel

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Embodiment Construction

[0039] Refer to attached figure 1 As shown, this embodiment takes the megawatt class long blades for low wind speed as an example to describe the intelligent optimization design method of the wind wheel, and the specific method is as follows.

[0040] The intelligent optimization design method for the wind rotor of the low-wind-speed wind turbine in this embodiment includes the following steps:

[0041] (1) Select optimization variables from the aerodynamic shape design parameters of wind turbine rotors. The selected aerodynamic shape optimization variables include wind rotor diameter L, chord length, twist angle, thickness distribution, and pre-bending line. All aerodynamic shape optimization variables are selected multiple control points as optimization variables;

[0042] Among them, the chord length and twist angle distribution are defined by high-order Bezier curves, which can ensure the smooth transition of the blade shape. The thickness distribution adopts a decreasin...

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Abstract

The invention discloses an intelligent optimization design method for a low-wind-speed wind turbine generator wind wheel, which comprises the following steps: selecting blade aerodynamic configurationparameters as optimization variables, calculating a blade power coefficient and a thrust coefficient according to variable values, and constraining Cpmax and Ctr; selecting the structural layer design parameters as optimization variables, calculating the mass center, the rigidity distribution and the inertia structural performance of each section of the blade, and forming a blade model by combining the aerodynamic configuration data; Adding the blade model into the complete machine model, and calculating the annual generating capacity of the complete machine; calculating and counting the dynamic load to obtain the maximum limit load of the blade root, the fatigue load and the blade clearance, and constraining the blade clearance; and finally, selecting a reasonable range of each optimization variable, and searching a blade design optimal solution by taking the maximum annual generating capacity and the minimum blade root load as optimization objectives. The optimized blade can ensurethe structural strength, the annual generating capacity is increased, the blade root load is reduced, the blade efficiency is improved, the cost is reduced, and the competitiveness is higher.

Description

technical field [0001] The invention relates to the technical field of design of wind turbine rotors of wind turbines, in particular to an intelligent optimization design method for wind turbines of low wind speed wind turbines. Background technique [0002] With the rapid development of the low-wind-speed wind power market in the southeast of the Middle East, and the fiercer competition for the cost of wind turbines through online bidding, the requirements for the performance, safety, stability and economy of low-wind-speed wind turbines continue to increase, among which the optimal design of wind rotor blades is particularly important . [0003] An existing patent application (CN106894947) discloses a method for optimally designing blades of a low-wind variable-speed variable-pitch wind turbine. The invention application aims at the maximum annual power generation and the lowest material cost under low wind speed conditions, and calculates the optimal solution of the chor...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/17Y02E10/72
Inventor 褚景春袁凌李媛潘磊王小虎宁红超
Owner GUODIAN UNITED POWER TECH
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