Wind generating set with expandable working wind speed range

Abstract

The invention discloses a wind generating set with an expandable working wind speed range, and belongs to the technical field of wind generation. The wind generating set comprises a wind turbine blade, an engine room, an engine room cover, a hub, a tower drum and a power generator, wherein the power generator is positioned in the engine room; a spring chamber is formed in the hub; the hub and the power generator are connected with each other through a spring in the spring chamber; a supporting rod is arranged at the front end of the hub; a first spring is sleeved outside the supporting rod; two ends of the first spring are respectively connected with a linking sleeve and a sleeve displacement limiting device; the linking sleeve is sleeved on the supporting rod; the sleeve displacement limiting device is fixed on the supporting rod; the root part of the wind turbine blade is connected to the linking sleeve through a linking rod; and a rated wind speed threshold device is embedded in the supporting rod between the linking sleeve and the sleeve displacement limiting device. The wind generating set has the advantages as follows: the workable wind speed range is enlarged; and normal rotation speed and power output can be guaranteed when wind speed is changed, so that the power generating time is prolonged, the wind energy utilization rate and equipment utilization rate are improved, and the power generating quantity is increased.

Description

technical field [0001] The invention belongs to the technical field of wind power generation, and in particular relates to a novel wind power generating set capable of expanding the working wind speed range. Background technique [0002] As a low-cost, green and environmentally friendly new energy, wind energy has received great attention and development in the field of power generation. Most of the installed wind power generation systems are upwind MW-level large-scale wind power generation systems interconnected with the power grid. The technology of this industry has become increasingly mature through continuous improvement, but small wind power generators still need to solve many technical difficulties and deficiencies. On the one hand, the wind speed of the wind turbine in normal operation needs to be greater than the start-up wind speed and lower than the cut-out wind speed. Ideally, only about 2,000 hours of the 8,760 hours a year can be used to generate electricity. ...

AI Technical Summary

Problems solved by technology

On the one hand, the wind speed of the wind turbine in normal operation needs to be greater than the start-up wind speed and lower than the cut-out wind speed. Ideally, only about 2,000 hours of the 8,760 hours a year can be used to generate electricity. Power generation areas are limited, making wind energy utilization low

On the other hand, the output voltage of wind power generation fluctuates greatly with the wind speed, resulting in low power quality.

Moreover, the upwind wind turbine needs a yaw device, so that the cost of power generation is relatively high

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