Multi-rotor wind power generation system

Abstract

The invention discloses a multi-rotor wind power generation system, which includes a lower tower 1, a rotary drive device 3 and a wind turbine, and also includes an upper tower 2, ropes and / or rods 8, beams 6 and a nacelle frame 7, and the rotary drive device is arranged on Between the upper tower and the lower tower, the beams located on both sides of the upper tower are connected to the upper tower through one end of the beam, and the outer end and middle part of the uppermost beam are respectively connected to the upper tower by ropes and / or rods The top ends of the adjacent beams are connected by ropes and / or rods, and the middle parts of adjacent beams are connected by ropes and / or rods. The nacelle frame is set on the upper tower, and the wind turbine is connected to the top of the upper tower. , the beam or / and the nacelle frame are fixedly connected, the wind turbine includes the wind wheel 4 and the nacelle 5, and there are 2-100 wind turbines. The blade of the invention has long service life, small occupied area, low installation and maintenance cost, good system reliability and wide application range, cancels the slewing bearing or slewing driving device in the nacelle, and improves the stress of the beam.

Description

technical field [0001] The invention belongs to the field of wind energy utilization and relates to a multi-rotor wind power generation system. 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 very important. During...

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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