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Analysis on the Force and Life of Gearbox in Double-Rotor Wind Turbine

Author

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  • Yaru Yang

    (School of mechanical engineering, Sichuan University, Chengdu 610065, China)

  • Hua Li

    (School of mechanical engineering, Sichuan University, Chengdu 610065, China)

  • Jin Yao

    (School of mechanical engineering, Sichuan University, Chengdu 610065, China)

  • Wenxiang Gao

    (AVIC Chengdu Aircraft Industrial (Group) Co., Ltd., Chengdu 610000, China)

  • Haiyan Peng

    (School of mechanical engineering, Sichuan University, Chengdu 610065, China)

Abstract

In order to study the force and life of the key components in the gearbox of an existing double-rotor wind turbine, the design and structural parameters of the gearbox in the traditional National Renewable Energy Laboratory (NREL) 5 MW single-rotor wind turbine are adopted, and the fixed ring gear of the first planetary stage transmission is released to form a differential gearbox suitable for a double-rotor wind turbine with two inputs. The double input is used to connect the double rotor. Subsequently, the characteristics of the gearbox in a double-rotor wind turbine are discussed. On the basis of the constant rated power of the whole wind turbine, the total power is divided into two parts, which are allocated to the double rotors, then two rotational speeds of the two inputs are given according to different power ratios by complying with the matching principle of force and moment. Furthermore, the force acting on the pitch circle of the planet gear, as well as the force and life of the planet bearing of the two-stage planetary transmission are calculated and compared with a single-rotor wind turbine. The results show that the structural advantages of a double-rotor wind turbine can reduce the stress of key components of the gearbox and increase the life span of the planet bearing, thereby the life of the whole gearbox is improved and the downtime of the whole wind turbine is reduced.

Suggested Citation

  • Yaru Yang & Hua Li & Jin Yao & Wenxiang Gao & Haiyan Peng, 2019. "Analysis on the Force and Life of Gearbox in Double-Rotor Wind Turbine," Energies, MDPI, vol. 12(21), pages 1-19, November.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:21:p:4220-:d:283904
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    References listed on IDEAS

    as
    1. Kumar, Vedant & Saha, Sandeep, 2019. "Theoretical performance estimation of shrouded-twin-rotor wind turbines using the actuator disk theory," Renewable Energy, Elsevier, vol. 134(C), pages 961-969.
    2. Yingning Qiu & Lang Chen & Yanhui Feng & Yili Xu, 2017. "An Approach of Quantifying Gear Fatigue Life for Wind Turbine Gearboxes Using Supervisory Control and Data Acquisition Data," Energies, MDPI, vol. 10(8), pages 1-21, July.
    3. Wenbin Dong & Yihan Xing & Torgeir Moan, 2012. "Time Domain Modeling and Analysis of Dynamic Gear Contact Force in a Wind Turbine Gearbox with Respect to Fatigue Assessment," Energies, MDPI, vol. 5(11), pages 1-22, November.
    4. Mingming Zhao & Jinchen Ji, 2016. "Dynamic Analysis of Wind Turbine Gearbox Components," Energies, MDPI, vol. 9(2), pages 1-18, February.
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