Novel auto-launching-type Darrieus-Savonius combined type vertical shaft wind machine

Abstract

The invention discloses a novel auto-launching-type Darrieus-Savonius combined type vertical shaft wind machine which comprises an S-shaped wind machine, an overrun clutch, a generator, D-shaped wind machines and a plurality of stand rods. A rotating shaft of the generator is connected with a shaft of the S-shaped wind machine in a transmission mode, and the plurality of stand rods are evenly distributed on the generator. The S-shaped wind machine is connected with the D-shaped wind machines through the overrun clutch, and the S-shaped wind machine is placed above the D-shaped wind machines. The D-shaped wind machines form an H-shaped wind machine with three blades, and the blades of the D-shaped wind machines are in an arc shape. The S-shaped wind machine is a double-blade spiral wind machine with 90-degree blade twist angle. After the S-shaped wind machine drives the D-shaped wind machines to be launched, the action of the S-shaped wind machine on the D-shaped wind machines is interrupted, so that the D-shaped wind machines are launched, the aerodynamic performance of the D-shaped wind machines is not affected by the S-shaped wind machine, and the property of the combined type vertical shaft wind machine is greatly improved.

Description

technical field [0001] The invention relates to a novel self-starting Darrieus-Savonius combined vertical axis wind turbine, which belongs to the technical field of wind power generation. Background technique [0002] Among the vertical axis wind turbines, the Darrieus wind turbine has higher efficiency, does not require wind-facing devices and transmission mechanisms, and the generator is installed on the ground, which is easy to maintain and maintain. But the Darrieus wind turbine has the disadvantage that it is not easy to self-start, that is, at a high wind speed, the tangential thrust generated by the static rotor blades is still small, which is not enough to overcome the tangential resistance of the blades to rotate. In order to make the Darrieus wind turbine run beyond the stall area or self-start, the methods currently used at home and abroad are: (1) start with an additional motor, (2) increase the solidity of the wind rotor, (3) change the warping angle of attack o...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the fact that the existing combined vertical axis wind turbine does not take into account that the combined S-type itself is a resistance-type fan, after the combined wind turbine works, the rotation of the S-type will have a great negative effect on the aerodynamic performance of the lift-type D-type impact, thus affecting the performance of the whole machine, the present invention provides a new type of self-starting Darrieus that can automatically start, realize that the S-type has the least impact on the aerodynamic performance of the D-type, and can improve the wind energy utilization rate of the entire combined vertical axis wind turbine. -Savonius combined vertical axis wind turbine

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