Vertical axis wind turbine provided with leading edge active telescopic slip sheets

Abstract

The invention provides a vertical axis wind turbine provided with leading edge active telescopic slip sheets, and belongs to the field of wind driven generators. The vertical axis wind turbine provided with the leading edge active telescopic slip sheet is provided with multiple wing type blades. Each wing type blade comprises a groove formed in the upper surface of the wing type blade, a telescopic slip sheet arranged in the groove, a drive device used for driving the telescopic slip sheet to stretch out from or retract into the groove and a control system used for detecting the phase angle state of the wing type blade and controlling the drive device. Thus, stretching and contraction of the slip sheets can be controlled according to the attack angle of blade running, the slip sheets stretch out when the stall attack angle is achieved so as to improve wing pneumatic performance, the slip sheets retract at the non-stall attack angle, and the original pneumatic performance is not influenced; and relative to a vortex generator and a gurney flap, the telescopic slip sheets cannot generate additional resistance, a whole mechanism is simple and light, consumed energy is low, operation iseasy, and maintenance cost is low.

Description

technical field [0001] The invention relates to a vertical-axis wind turbine, in particular to a vertical-axis wind turbine with an active retractable slide on the leading edge, and belongs to the field of wind power generators. Background technique [0002] In response to the huge crisis of increasing energy demand and the depletion of fossil energy, wind power technology, as a new energy utilization method, has developed rapidly in the past few decades. Wind turbines can be divided into horizontal axis wind turbines and vertical axis wind turbines according to the relationship between the rotor shaft and the wind direction. Among them, the horizontal axis wind turbine has become the main research object because it is suitable for large-scale wind farms and has relatively high wind energy utilization coefficient. However, the sites suitable for building large-scale wind farms in the future have basically been exhausted, so vertical axis wind turbines have attracted more an...

AI Technical Summary

Problems solved by technology

However, they also have some insurmountable shortcomings. For example, passive control technology tends to react at small angles of attack on the airfoil, resulting in reduced aerodynamic performance of the airfoil; active control technology has complex control and transmission mechanisms and requires large energy input.

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