A direct-drive breeze wind turbine system

Abstract

The invention relates to the technical field of wind power generation, in particular to a direct-drive breeze wind power generator system. It includes a wind generator, an electric control system and a power storage device. The wind generator includes a generator cabin, an impeller, a hub, a shroud, a tail rudder, a generator back cover, a vertical pole, and a vertical pole mounting seat. The cover is installed on the impeller, the generator cabin is provided with an ironless permanent magnet alternator, the generator is fixedly connected to the wheel hub through the generator main shaft, and an automatic brake is arranged in the generator rear cover The automatic braking device is used to perform braking action on the wind turbine when the rotational speed of the impeller is greater than the set rated rotational speed. The invention eliminates the cogging effect of the traditional generator by setting the ironless permanent magnet alternator, greatly reduces the rotational resistance of the wind rotor blades, and greatly improves the small wind power through the design of the secondary energy storage electric control system. Wind energy utilization of generators.

Description

technical field [0001] The invention relates to the technical field of wind power generation, in particular to a direct-drive breeze wind power generator system. Background technique [0002] A wind turbine is a pollution-free clean energy device that uses wind energy to generate electricity. It uses the wind to blow the blades of the wind turbine to rotate, and drives the electromagnetic induction generator to generate electricity. The starting wind speed of traditional wind turbines is generally not lower than grade 3 wind, and the rated operating wind speed generally requires grade 5-6 wind or above. This has certain requirements for the use environment of wind turbines, resulting in limited application areas. Traditional wind turbines are generally large-scale equipment, which is only suitable for areas with strong winds. For areas with only small wind or breeze, or for rural households, large wind turbines are useless, and the blades of wind turbines are useless. It w...

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Problems solved by technology

[0004] The existing wind generators mainly have the following disadvantages: the starting wind speed is too high, and when the wind speed is below 5 m / s, it hardly generates electricity, or the power generation is too low, and has no practical value in a wide range of low wind speed areas, such as , the lighting of municipal street lamps cannot be stably maintained; the cogging effect of the wind turbine has not been eliminated, and this cogging effect becomes the accompanying resistance to the rotation of the fan blades, resulting in a low speed in the case of light wind and insufficient electric power; the wind turbine The weight of the main part is too large, and the rotating shaft is too tight, which is not conducive to flexible wind response and quick start-up of power generation in light wind conditions; the output voltage of wind turbines changes frequently due to changes in wind speed in nature, and the efficient use of this type of electricity requires special design. The electronic control system, that is, the wind turbine controller

In the windy or typhoon season, this braking method will often fail, causing the fan blades to be damaged or even broken, causing damage to people on the ground or buildings

Traditional wind turbine blades are basically completed manually and semi-mechanically, with low efficiency, low output and unstable quality

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