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Wind turbine aerodynamic-designing method considering static and dynamic influence of designed tip speed ratio on wind wheel

A technology of blade tip speed ratio and aerodynamic design, applied to the aerodynamic design of wind turbines affected by dynamic performance, considering the design of blade tip speed ratio to the static field of wind turbines, it can solve the problems affecting the dynamic process of MPPT, low wind energy capture efficiency, etc., to achieve Effect of improving wind energy capture efficiency

Active Publication Date: 2017-05-31
NANJING UNIV OF SCI & TECH
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AI Technical Summary

Benefits of technology

This new technology allows for better control over the rotor blades' speeds during operation compared to previous designs without affecting their overall power output or causing damage from high velocity airflows. It also considers factors like the distance between different parts of the rotors and how they are shaped when connected together optimizing its performance. Overall, this innovation enhances the ability of the electricity generating equipment to efficiently harness both strong and weakened weather conditions while maintaining good safety measures against potential hazards such as tornado strikers.

Problems solved by technology

This patents describes different technical problem addressed during research into how varying speeds are used in larger wind generators due to their high impact on both the dynamic behavior and the overall performance of these machines. While previous solutions like pitch regulation or blade velocity feedback were proposed but they did little consideration about changes made over time. There has been some work done exploring various techniques aimed towards understanding the effectiveness of changing specific parameters when optimizing the power output of certain components within the machine's structure.

Method used

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  • Wind turbine aerodynamic-designing method considering static and dynamic influence of designed tip speed ratio on wind wheel
  • Wind turbine aerodynamic-designing method considering static and dynamic influence of designed tip speed ratio on wind wheel
  • Wind turbine aerodynamic-designing method considering static and dynamic influence of designed tip speed ratio on wind wheel

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Embodiment

[0048] The 1.5MW wind turbine developed by the National Renewable Energy Laboratory (NREL) was selected as a benchmark, and the aerodynamic optimization design was carried out by using the traditional separated wind rotor optimization design method and the optimization method proposed by the present invention respectively. The reference blade parameters are shown in Table 1.

[0049] Table 1 Parameters of 1.5MW wind turbine blades

[0050]

[0051] Calculate P favg The turbulent wind speed parameters used are shown in Table 2.

[0052] Table 2 Turbulent wind speed parameters

[0053]

[0054]

[0055] According to the traditional separation design principle (that is, the C of the wind wheel p,max Maximize as the goal to choose λ dgn and optimize the aerodynamic shape of the wind rotor), by calling the PROPID program to complete different λ dgn The aerodynamic design of the wind rotor, and then calculate the C of each wind rotor p,max , so that C p,max λ correspon...

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Abstract

The invention discloses a wind turbine aerodynamic-designing method considering static and dynamic influence of designed tip speed ratio on a wind wheel. The method uses a wind turbine closed loop performance index-average wind energy capture efficiency as a target function, the originally designed tip speed ratio, chord length and torsional angle separation optimizing process is improved into united optimization, so that wind-turbine aerodynamic design originally ignoring Maximum Power Point Tracking (MPPT) control dynamic can consider the shortcomings of tracking performance, and accordingly the static aerodynamic performance and tracking dynamic process of a wind turbine are coordinated. The method can effectively improve the wind energy capture efficiency of a variable-speed fan at turbulent-flow wind speed.

Description

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Claims

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Application Information

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Owner NANJING UNIV OF SCI & TECH
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