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A novel hydraulic transmission solution to large offshore wind turbine: Design and control strategy by Feng Wang; Jincheng Chen; Min Cheng; Bing Xu is a Engineering article available to read on EtoBox.

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As a comparative solution to gearbox transmission, the hydrostatic transmission has potential to improve offshore wind turbine reliability. However, drivetrain efficiency of hydrostatic transmission is relatively low at low wind speed. To solve this problem, a digital hydrostatic transmission solution for large offshore wind turbine is proposed. The large variable displacement motor in hydrostatic transmission is replaced by multiple fixed displacement motors and a small variable displacement motor. However the wind is turbulent in nature. This results in frequent switching of fixed displacement hydraulic motors. Therefore in this study a control strategy of large utility digital hydrostatic wind turbine under turbulent wind is proposed. The torque control of digital hydrostatic wind turbine is presented. The digital displacement switching scheme is developed. The system pressure controls during motor switching are studied. The dynamic performances and annual energy production of digital hydrostatic wind turbine under turbulent wind are studied. Results show the effectiveness of the proposed control strategy for digital hydrostatic wind turbine. The mean turbine output power at dif

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Author

Feng Wang; Jincheng Chen; Min Cheng; Bing Xu

Publisher

Elsevier BV

Published

2022

Language

EN

Field

Engineering (Physical Sciences)