Plasma discharge efficiency-increasing type double-layer structure energy gathering cover suitable for horizontal-axis wind turbine

Abstract

The invention relates to a plasma discharge efficiency-increasing type double-layer structure energy gathering cover suitable for a horizontal-axis wind turbine. An inner layer cover and an outer layer cover are included, the radial size of the outer layer cover is larger than that of the inner layer cover, the wind turbine is erected at the circle center of the inner layer cover through an innerstrut, the outer layer cover is concentrically erected outside the inner layer cover through an outer strut, and an annular airflow acceleration channel is formed between the two covers; the axial width of the outer layer cover is smaller than the axial width of the inner layer cover, and the two covers are aligned with each other on the leeward side; the size of a gap in the leeward side of the annular airflow acceleration channel is smaller than the size of a gap on the windward side, and the gaps are in smooth transition between the windward side and the leeward side; the outer surface of the inner layer cover is provided with first plasma discharge ring positive and negative electrodes, a discharge gap is reserved between the first plasma discharge ring positive and negative electrodes, and the first plasma discharge ring positive electrode is located on the windward side; and the inner surface of the outer layer cover is provided with second plasma discharge ring positive and negative electrodes, a discharge gap is reserved between the second plasma discharge ring positive and negative electrodes, and the second plasma discharge ring positive electrode is located on the windward side.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a plasma discharge synergistic double-layer structure energy gathering cover suitable for a horizontal axis wind turbine. Background technique [0002] At present, most of the large-scale wind turbines connected to the grid are horizontal-axis wind turbines. Horizontal-axis wind turbines generally rely on the lift of the blades to perform work on the tangential component of the rotation profile, commonly known as lift-type wind turbines. [0003] Although the lift-type wind turbine has the advantages of high tip speed ratio and high wind energy utilization rate, it also has the disadvantage of weak start-up performance. The start-up wind speed of general lift-type wind turbines is above 5m / s, and individual lift-type wind turbines The start-up wind speed is even as high as 7m / s, which will reduce the power generation and power generation range of the win...

AI Technical Summary

Problems solved by technology

[0007] Therefore, it shows that the airflow acceleration effect between the inner layer cover and the outer layer cover has not reached the ideal level. To improve the utilization rate of wind energy to a greater extent, the airflow acceleration effect between the inner layer cover and the outer layer cover must be further improved

Images