Balanced vertical-axis large wind power generation unit

Abstract

The invention discloses a balanced vertical-axis large wind power generation unit. The balanced vertical-axis large wind power generation unit comprises a permanent magnet generator, a wind wheel group and a vertical-axis rotary system, wherein the wind wheel group comprises lift type blades as well as upper supports, intermediate supports and lower supports which are opposite, and the vertical-axis rotary system is provided with an upper post, a lower post, and a central rotary shaft mechanism which is provided with a central shaft and a universal coupling; the central shaft passes through the lower post through a bearing, the upper end of the central shaft is connected with the upper post, the lower end of the central shaft is connected with one end of the universal coupling, the other end of the universal coupling is connected with a rotating shaft of the permanent magnet generator in a driving way, and a machine base of the permanent magnet generator and the lower post are fixed on a base; the upper post is provided with a first connecting piece, and one end of each upper support is fixedly connected with the first connecting piece and the other end of each upper support is fixedly connected with the upper part of one lift type blade; one end of each intermediate support is connected with the upper end of the central shaft and the other end of each intermediate support is fixedly connected with the middle part of one lift type blade; and one end of each lower support is connected with the central shaft through a second connecting piece and the other end of each lower support is fixedly connected with the lower part of one lift type blade. The stability and balance can be improved, the structure can be simplified, the strength can be increased, materials and cost can be reduced, and the balanced vertical-axis large wind power generation unit is easy to maintain.

Description

technical field [0001] The invention relates to the technology of a vertical-axis wind power generating set, in particular to a balanced vertical-axis large-scale wind power generating set. Background technique [0002] Wind power generation has a history of more than 150 years. After analyzing the atmospheric circulation model, scientists found that the wind energy contained in the convective air masses in the lower atmosphere is very huge, which is inexhaustible and available to human beings. One of the exhausted renewable energy sources. Therefore, under the situation that human beings are facing the energy crisis that is gradually intensified, the research and development of wind power generation has more and more important and far-reaching practical significance. In some developed countries, such as the United States, the Netherlands, Denmark, France, Germany, Italy and other countries, wind power has played a pivotal role in their domestic power structure. In my coun...

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Problems solved by technology

[0004] The wind energy utilization rate of the lift type vertical axis wind turbine can be as high as 42% during normal operation, but it has the following defects: in the low wind speed state, the force bearing area is small, and the starting torque generated is small, and it usually needs to be started under natural conditions. The start can only be achieved by the wind drive of four or more winds, so that for large and medium-sized wind turbines, it is usually necessary to equip a motor auxiliary starting device to force the start, which makes the structure of t

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