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HYDROSTATIC POWER TRANSMISSION SYSTEM FOR WIND TURBINES
Abstract
In 2023, 18.3 GW of new wind energy conversion capacity was installed in Europe; most of them (79%) represent onshore capacities. Most of this energy production is achieved with horizontal axis wind turbines. For this type of turbine, the location of the transmission coupled with an electric generator or a hydraulic group, in the turbine platform, leads to a significant increase in the mass of the platform, and implicitly in the mass of the pillar that supports the turbine. In addition, turbine maintenance becomes more difficult as the rotor diameter and installation height increase. The platform (excluding the rotor) represents between 20 ... 35% of the total weight of a large turbine reaching hundreds of tonnes in some cases. In the case of the VESTAS V90 turbine, the platform weighs 75 tonnes, the rotor 40 tonnes, and the tower 152 tonnes. For this reason, methods of reducing the suspended mass, mainly by placing the electric generator on the ground, have been and are being intensively studied in the last decades. If at the beginning large power turbines were studied, recently medium and small sized turbines are also being considered. The paper presents a solution for hydrostatic transmission of energy from the turbine rotor to the generator, validated by numerical simulation with Simcenter Amesim.
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References9
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Number of times cited according to Crossref: 1
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