What is the function of the wind turbine nacelle manufactured by Goldwind Technology?

The person above is wrong! Sinovel is not a state-owned enterprise, but a joint-stock company! I just signed it this year, and the three parties said it was a joint-stock company! ! Goldwind units have direct-drive units, while Sinovel units are double-fed. (1) Generator: Sinovel Wind Power’s doubly-fed generator sets use doubly-fed asynchronous generators, and Goldwind Technology’s direct-drive units use low-speed multi-pole permanent magnet generators. Permanent magnet generators use rare earth permanent magnet materials. Rare earth materials are scarce resources and are likely to be used as national strategic reserve resources in the future. Therefore, prices are likely to skyrocket and the prospects are highly uncertain. The permanent magnet generator has a large number of magnetic poles, and its volume and weight are much larger than that of a doubly-fed generator. Moreover, the design technology of multi-pole permanent magnet generators is not yet mature in China, and there are greater risks. Goldwind Technology uses rare earth permanent magnet generators, which suffer from demagnetization and easy corrosion. The doubly-fed asynchronous wind motor used in Sinovel Wind Power's doubly-fed generator units has the advantages of mature and reliable technology, low cost, and light weight, and has been proven and adopted by the top international complete machine manufacturers. (2) Frequency converter: The direct drive unit uses a full-power frequency converter, which has large capacity and is expensive, and the frequency converter generates large harmonics. In the doubly-fed unit, only the slip power passes through the frequency converter, which gives full play to the advantages of a small-sized doubly-fed generator, so the frequency converter has small capacity, low price, and the harmonics of the unit are small. (3). Gearbox: Direct drive units do not use gearboxes. The wind wheel directly drives the generator rotor to rotate. Doubly-fed units use gearboxes to increase the speed of the wind wheel. The gearbox is a potential failure point and may cause higher maintenance costs. High, but the gearbox manufacturing technology has matured and the failure rate is already very low.