Multi-rotor wind generating system

Abstract

The invention discloses a multi-rotor wind generating system, which comprises a lower tower 1, a rotary driving device 3, wind turbines, an upper tower 2, beams 6 and a cabin frame 7, wherein the rotary driving device is arranged between the upper tower and the lower tower; 2 to 50 beams are arranged; beams positioned on two sides of the upper tower are connected to the upper tower through one end of each beam in a symmetrical or staggered manner, and the other end of each beam is connected with the top end of the upper tower through a rope and / or a rod 8, or connected with other beams first and then connected with the top end of the upper tower; the cabin frame is arranged on the upper tower; the wind turbines are arranged on the top of the upper tower, the beams or / and the cabin frame; each wind turbine comprises a wind wheel 4 and a cabin 5; and 2 to 100 wind turbines are arranged. The multi-rotor wind generating system has the advantages that: blades have long service life, the occupied area is small, the installation and maintenance cost is effectively reduced, the maintenance cost is low, the reliability of the system is high, the application range is wide, a slewing bearing or a rotary driving device in the cabin is eliminated, and the bearing capacity of the beams is high.

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. Durin...

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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