Vertical axis wind turbine curved blades with twist angle

A technology of curved blades and vertical axis, applied in the field of curved blades of vertical axis wind turbines, can solve the problem of not being able to maximize the energy conversion efficiency of the blades, reduce the functional force of the equatorial part, etc., achieve high instantaneous torque, improve operating efficiency, and achieve self-starting effect
CN104863792BActive Publication Date: 2018-04-17SHANGHAI JIAOTONG UNIV +1
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI JIAOTONG UNIV
Publication Date
2018-04-17

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a curved blade of a vertical axis wind turbine with a torsion angle. There are different torsion angles between the airfoils of each part of the curved blade along the spanwise direction. With clockwise as the positive direction, the torsion of each cross-section of the blade in the spanwise direction is The angle is between 0° and 25°. The curved blade is mainly used in Daryl wind turbines, and its profile is troposkien, parabolic or straight-arc-straight. The invention has the beneficial effects of being able to reduce the stall effect, provide higher instantaneous torque, realize the self-starting of the wind turbine at low wind speed, and effectively improve the operating efficiency of the vertical axis wind turbine.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a blade of a wind turbine, in particular to a curved blade of a vertical axis wind turbine with a torsion angle. Background technique

[0002] The current shortage of energy in the world and the deterioration of the environment have prompted more people to turn to wind energy, which is rich in energy. To develop wind energy, the design and optimization of wind turbines are the focus of all aspects.

[0003] There are two types of wind turbines: horizontal axis wind turbines and vertical axis wind turbines. Relevant studies have shown that compared with horizontal axis wind turbines, vertical axis wind turbines do not depend on wind direction, do not require yaw equipment, are more compact, simple in structure, easy to maintain, and are easier to miniaturize and install in cities and remote mountainous areas.

[0004] The running speed of the drag-type vertical-axis wind turbine is not high, and the efficiency is also low. At ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More