Control system adopting opposite rotation for vertical axis type wind driven generator

Abstract

The invention discloses a control system adopting opposite rotation for a vertical axis type wind driven generator comprises a stator blade group, an outer rotor blade group and a permanent magnet machine provided with a stator and an outer rotor, wherein the stator blade group is connected to the stator of the permanent magnet machine and can drive the stator to rotate in a first direction; the outer rotor blade group is connected to the outer rotor of the permanent magnet machine and can drive the outer rotor to rotate in a second direction opposite to the first direction. Compared with the structure that only one group of blades are connected to the rotor of the permanent magnet machine, the rotating speed of the permanent magnet machine adopting the structure of the wind force machine in the invention is doubled under the same wind conditions, so that the rotating speed of the blades can be matched with the rated rotating speed of the permanent magnet machine, and start and operation under breeze conditions can be realized under the assistance.

Description

technical field [0001] The present invention relates to a wind machine, and more particularly, the invention relates to a vertical axis wind machine. Background technique [0002] A wind machine is an energy machine that uses wind turbine blades to capture wind energy and convert it into rotational mechanical energy, which then drives the machine to generate electricity. According to its size and power, it can be divided into large wind machines and small wind machines. my country is a major producer and exporter of small wind machines. [0003] In the prior art, small-scale wind machines mainly have two structures, the horizontal axis type and the vertical axis type, both of which use the wind turbine to directly drive the permanent magnet machine. [0004] The disadvantage of the horizontal axis wind machine is that the start-up wind is relatively large. Generally, the start-up wind speed needs to be 3.5m / s~4.0m / s to start the machine, and it is impossible to start the m...

AI Technical Summary

Problems solved by technology

However, the high-speed permanent magnet machine does not match the low-speed wind turbine when the wind speed is low, so that the permanent magnet machine cannot work at the rated design speed, and cannot provide the required electric energy, which affects the power generation efficiency.

[0006] In addition, the speed regulation of the vertical axis machine in the prior art is relatively difficult, and the wind energy cannot be captured to the maximum extent, and the protection under excessive wind speed can only rely on the mechanical brake device

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