Hydro-viscous transmission based maximum power extraction control for continuously variable speed wind turbine with enhanced efficiency

Xiu-xing Yin, Yong-gang Lin, Wei Li and Hai-gang Gu

Renewable Energy, 2016, vol. 87, issue P1, 646-655

Abstract: The hydro-viscous transmission is potentially attractive for large scale wind turbines and is capable of significantly improving the turbine controllability and reliability due to the direct drive-train speed control. The hydro-viscous transmission based maximum power extraction control is presented in this paper. The system design, basic dynamic characteristics, thermal losses and management are presented and thoroughly analysed. The system model and the maximum power extraction control loop are also presented and designed. By using the designed control loop and controlling the hydro-viscous transmission, the turbine rotating speed can be continuously adapted to the incoming wind speed to maintain the optimum power points. Simulation results of a 2.0 MW wind turbine demonstrate that the hydro-viscous transmission based wind turbine has increased power capture due to the continuously variable speed feature as compared to a variable speed wind turbine with merely converter control. The hydro-viscous transmission works well enough and has an enhanced overall efficiency than the conventional system with fixed gear ratio.

Keywords: Wind turbine; Hydro-viscous transmission; Thermal losses and management; Maximum power extraction control (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (5)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:87:y:2016:i:p1:p:646-655

DOI: 10.1016/j.renene.2015.10.032

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