H-shaped vertical axis wind turbine energy buffer device

Abstract

The invention belongs to the related field of wind power generation technologies, and discloses an H-shaped vertical axis wind turbine energy buffer device. The H-shaped vertical axis wind turbine energy buffer device comprises an energy buffer unit and a centrifugal speed regulating unit. The energy buffer unit comprises sliding blocks mounted on horizontal supporting rods in an embedded mode andcapable of sliding along the horizontal supporting rods, and the sliding blocks are connected with a main shaft through buffer springs. The centrifugal speed regulating unit comprises a fixed sleeve,a middle sleeve and a lower end sleeve which are arranged on the main shaft in a sleeving mode, wherein the middle sleeve and the lower end sleeve can slide up and down along the main shaft along with extending and retracting of centrifugal springs. Lantern rings provided with heavy objects in a sleeving mode are connected with the three sleeves correspondingly. Baffles connected with the lanternrings are arranged at the outer ends of the sliding blocks to limit the sliding blocks to slide in the direction away from the main shaft. Through the H-shaped vertical axis wind turbine energy buffer device, mutual conversion of angular momentum of both the sliding blocks and a wind turbine can be achieved, and the stability of the output power of the wind turbine is maintained; the influence ofthe sliding blocks on the starting performance of the wind turbine is effectively prevented through the centrifugal speed regulating unit; and meanwhile, the H-shaped vertical axis wind turbine energy buffer device has the advantages of easy manufacturing, low cost and convenient mounting and thus has the wide applicability.

Description

technical field [0001] The invention belongs to the related field of wind power generation technology, and more specifically relates to an energy buffer device for an H-type vertical axis wind turbine. Background technique [0002] As of the end of 2016, my country's installed capacity of renewable energy power generation has reached 570 million kilowatts, of which the installed capacity of wind power is 149 million kilowatts, accounting for 9.0% of the total installed capacity of electricity. It is an important form of renewable energy power generation. At present, in wind power generation, the technology of horizontal axis wind turbine is mature and occupies most of the market share. However, the research results show that the vertical axis wind turbine is more superior than the horizontal axis wind turbine in many aspects, and it is an important development direction in the field of wind power generation. [0003] Vertical-axis wind turbines can be divided into resistanc...

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Problems solved by technology

However, the above methods are technically complex and costly, so the applicability is not strong, and it is not conducive to wide application.

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