Abstract

In order to improve the hydrodynamic performance of the vertical-axis variable-pitch current turbine, with analyzing on the existing design mentality of blade control mechanism, an optimized law of variable-pitch vertical-axis tidal current turbine was given in terms of the instantaneous moment coefficient of the blade. A method for solving the lift - drag coefficient of Blade by wind - hole test data is given. The optimized kinematic model has a significant reference value for the further development of vertical axis turbine model test.

Highlights

  • Tide energy is a kind of clean, stable, and rich renewable energy

  • Experiments and studies have shown that the study of variable pitch system is of great significance to improve the energy capture efficiency of vertical-axis turbine [2, 3]

  • Solving the problem by Matlab, the best pitch law is given in terms of the instantaneous moment coefficient of the blade, which provide a new idea on the study of efficiency capture of vertical-axis turbine

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Summary

Introduction

As the characteristic of simple, non - directional selective, easy-to-install and easy-to-maintain power generation device, the energy capture efficiency of the vertical-axis turbine is always the focus of nowadays research [1]. Experiments and studies have shown that the study of variable pitch system is of great significance to improve the energy capture efficiency of vertical-axis turbine [2, 3]. Analysis of hydrodynamic is made and subsequently an optimization model of vertical-axis turbine performance is established, which use the blade instantaneous moment coefficient as an optimization target and blade angle of attack as optimization variable. Solving the problem by Matlab, the best pitch law is given in terms of the instantaneous moment coefficient of the blade, which provide a new idea on the study of efficiency capture of vertical-axis turbine

Hydrodynamic analysis of turbine
Analysis on lift - drag coefficient of Blade
Optimization model of law of variablepitch
Simulation result
Conclusion
Full Text
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