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Xinhua News Agency reporter learned from China Shipbuilding Industry Corporation on the 27th that the 5 MW offshore wind turbine prototype independently developed by the group was successfully launched at the Chongqing Haizhuang Wind Power Assembly Production Base. The wind turbine has completely independent intellectual property rights, ending the history of China's main dependence on imported technology. It is understood that the unit is currently the same type of aircraft in the same type of "the largest diameter of the wind wheel, the lightest weight of the machine head, the highest power generation." After being offline, it will be transported to the Rudong Yellow Sea Wind Farm in Jiangsu Province, and will be connected to the grid for power generation during the year.
It is understood that the 5 MW offshore wind turbine that was off the assembly line is the only authorized technology support plan of the Ministry of Science and Technology. Since the implementation of the project, CSIC has fully utilized its own advantages and relied on the platform construction of the National Offshore Wind Power Engineering Technology Research Center. After three years of technical research, it has made major breakthroughs in key technical fields such as transmission systems, control systems and marine corrosion. 32 national patent technologies have formed a whole industrial chain structure. Key components such as blades, gear boxes, generators, control systems, hubs, towers, and lubrication systems are all completed by group members. Especially in the design of the whole machine, the design of “standardization, serialization and modularization†is implemented. In addition to the blades, the various parts and components can be completely interchanged, which greatly reduces the waste of raw materials and reduces the production cost.
The newly developed 5 MW wind turbine is a three-blade, upwind, horizontal axis, electric pitch, grid-connected offshore wind turbine generator set, with integrated casting frame, large bearing + gearbox speed increase, high speed permanent magnet power generation. Machine + full power converter, fully enclosed structure of the cabin + internal air-to-air cold circulation system, its head is compact and its weight is 15% lighter than that of the same level wind turbine. It is the lightest in the world, which will greatly enhance the fan. operating efficiency.
The blade length of this model is 75 meters, and the diameter of the wind wheel can reach 154 meters. It is the largest size of the current similar products, and the sweeping area is also the largest. It is suitable for Class III wind areas, covering more than 90% of the current wind farms. Greatly improve the utilization efficiency and power generation of wind resources.