Multi-rotor wind power generation system with cantilever beam

Abstract

The invention discloses a multi-rotor wind power generation system with a cantilever beam, comprising a lower tower (1), a slewing drive device (3) and a wind turbine, and an upper tower (2), a cantilever beam (6) and a nacelle frame (7), the slewing drive device is arranged between the upper tower and the lower tower, one end of the cantilever beam is fixedly connected with the upper tower, and the cabin frame is arranged on the upper tower above, the wind turbine is arranged on the top of the upper tower, the cantilever beam or/and the nacelle frame, the wind turbine includes a wind wheel (4) and a nacelle (5), and the number of the wind turbines is 2-100 . The advantages and positive effects of the present invention are: (1) long blade life; (2) small footprint; (3) low installation cost; (4) low maintenance cost; (5) good reliability of the system; (6) Wide range of applications; (7) The slewing bearing or slewing drive system in the nacelle is eliminated.

Description

technical field [0001] The invention belongs to the field of wind energy utilization, and relates to a multi-rotor wind power generation system with a cantilever beam. Background technique [0002] With the global energy crisis and global environmental pollution intensifying, many countries are paying more attention to the research, development and utilization of clean and renewable energy. The Global Wind Energy Council pointed out that compared with other renewable energy technologies, wind power technology is more mature, its efficiency is higher, the industry has the best prospect, and its development and utilization growth rate is much higher than that of conventional energy. One of the fastest renewable energy technologies. [0003] The wind rotor is the core component that converts wind energy into mechanical energy, so the performance of the blade determines the performance of the wind turbine, and the safe and stable operation of the blade within the design life is...

AI Technical Summary

Problems solved by technology

Once a problem occurs, the wind farm will cause economic losses due to downtime and power outages, plus the cost of maintenance, hoisting and replacement parts, over-limit transportation, repeated installation, etc. In addition, most of the wind turbines are installed in remote or inaccessible areas, so it is difficult to hoist and disassemble Big, huge price paid in the end

Therefore, although the manufacturing cost of wind turbines decreases with the increase of power, the total cost will increase on the contrary considering the maintenance and other costs in the later period.

On the other hand, the length of blades of giant wind turbines will reach 60-70m, and land transportation and installation are extremely difficult. The capacity of cranes used for installation will exceed 1200-1400t. Many areas do not have this condition, thus limiting the use of giant wind turbines

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