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Research and Application on Key Technology of Wind Turbine System Analysis

Author: LiXingGuo
Tutor: HeYuLin
School: Chongqing University
Course: Mechanical Manufacturing and Automation
Keywords: WTG System Modeling and Simulation Evaluation New Transmission Finite Element Analysis Aerodynamics
CLC: TM315
Type: Master's thesis
Year: 2009
Downloads: 431
Quote: 2
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Abstract


China's wind energy resources are very rich, and the rapid development of the wind power industry, there is an urgent need to improve the domestic wind power equipment design and manufacturing capabilities. Wind turbine system design of key technologies and key components with the international advanced level there is a great gap between the wind turbine system design techniques are relatively weak, as a constraint bottleneck of China's wind power equipment. Papers Chongqing key scientific and technological project \Theory of Computation - blade element momentum the theory (BEW theory) can not consider the effect of the wind speed lag caused by the air quality defects in the analysis and comparison of the differences on the basis of the helicopter rotor and wind turbine wind wheel, according to the characteristics of the wind wheel, with dynamic inflow theory (GDW helicopter hanging wing aerodynamics theory) was amended to make it suitable for the aerodynamic analysis of wind turbine calculation, and wheel aerodynamics calculated based on the the GDW theoretical wind. ② typical wind turbine drive train design type system based on the qualitative evaluation of wind turbine drive system design including system design, after-sales service, the size and quality of installation, cost, combined with non- The quantitative analysis of the linear drive system model, constitute the structure of the evaluation system of the wind turbine drive system. ③ amendment GDW theory analysis model of a wind turbine aerodynamics, while co-simulation technology into the wind turbine structural dynamics analysis, the method takes into account the gas elasticity of the wind turbine structure, Matlab calculation of aerodynamic and calculated by ADAMS the structural deformation mutual coupling, wind turbine structural dynamics the joint simulation analysis model. ④ wind turbine combined simulation model, the the joint simulation analysis technology applied to the analysis of a Stall 600kW wind turbine system performance simulation. The aerodynamic performance of wind turbine, the analysis of the results of GH Bladed, both results are very close, which validates the correctness of the the joint simulation analysis model. The analytical methods taking into account the aeroelastic coupling effect of the wind turbine structure, the simulation situation closer to the actual wind turbine, to improve the calculation accuracy. ⑤ wind turbine for the current trend to the development of high-power, high-efficiency, high reliability direction, on the basis of the planetary gear to study a high-power wind turbine new hydraulic variable speed control drive system. This new powertrain applications planetary gear drive and adjustable guide vane combination of the torque converter, torque converter guide vanes adjustable variable speed control system, and its high accuracy, fast response and overshoot a small amount, to achieve a shift input, a constant speed output, the purpose of a constant generator power, thereby reducing the impact on the grid when the network. And simulation analysis model, the performance of the system, the dynamic simulation analysis using ADAMS and MATLAB / SIMULINK software. ⑥ according to the requirements analysis of the structure of the key parts of the wind turbine design specifications developed by Germanischer Lloyd (GL standard), joint wind turbine structure dynamics simulation analysis, the load under typical wind conditions, the research unit type and boundary conditions, to establish the finite element model, and MSC finite element analysis software on the key components of the wind turbine wind wheel hub, spindle, spindle and wheel studs join the structural strength analysis.

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CLC: > Industrial Technology > Electrotechnical > Motor > Generators, large the generator group ( Zonglun,) > Wind turbines
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