Dynamic sail wind energy machine and rotation and revolution control method thereof

Abstract

The invention discloses a dynamic sail wind energy machine which comprises a main shaft, a bootable disk, a rotating bracket and sail components, wherein the rotating bracket can revolve around the main shaft, the sail components can rotate on the rotating bracket, and the rotation direction is opposite to the revolution direction; a guiding track arranged on the bootable disk is matched with thesail components and controls the sail components to rotate on the preset track, and the rotation is non-uniform rotation; within a period of revolution of the sail components, according to the different included angles formed by the sail of the sail components and the wind direction, a downwind maximum resistant state region which corresponds to the first revolution angle is formed, the sail and the wind direction can be vertically orthogonal within the downwind maximum resistant state region. According to the invention, the working efficiency of the sail can be effectively improved.

Description

technical field [0001] The invention relates to a wind energy machine, in particular to a power sail wind energy machine which can effectively improve the working efficiency of the sail. Background technique [0002] At present, wind turbines are mainly horizontal-axis propeller-type lift wind energy machines. Although the technology of this type of wind turbine is very mature, it has its inherent limitations: [0003] 1. Low efficiency. [0004] (1) The sail is based on the working principle of lift. Although the linear speed is high during work, the wind pressure difference between the windward side and the leeward side of the blade is not large, so it is difficult to fully utilize the wind energy. [0005] (2) The working area of ​​the blade only accounts for less than 10% of the "sweeping area", and only the middle and root are working parts in the whole blade, and the wind energy consumption tends to develop towards the blade end. [0006] 2. The safety is limited, th...

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Problems solved by technology

[0006] 2. The safety is limited, the material technical requirements are high, and the price is expensive

However, since the rotation and revolution of the blades of the above-mentioned wind energy machine are driven by a specific transmission mechanism, and the rotation speed ratio of the rotation axis of the blades to the rotation axis around the revolution axis is 1:2, in the entire revolution period, only when the blades reach The highest operating efficiency can be obtained only when the downwind point and the upwind point are reached, and when the blades are in other upwind positions on the upwind side, the wind blades will still generate a lot of resistance when doing work against the wind, and at the same time, when the blades are in other positions on the downwind side , which is far from the operating efficiency that can be achieved at the downwind point, forming a slowly increasing and attenuating work state, which affects its wind energy utilization rate

Due to the above-mentioned wind energy machine adopting the specific transmission structure for the transmission control of the rotation and revolution of the wind blades, the conversion efficiency of wind energy and electric energy has reached a bottleneck state and cannot be improved.

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