The transmission characteristic for the improved wind turbine gearbox

Fan, Zhixin; Zhu, Caichao; Li, Xiuhe; Liang, Chengcheng

doi:10.1002/ese3.356

Cited by 6 publications

(5 citation statements)

References 24 publications

(33 reference statements)

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“…Each gear within the planetary transmission system is characterized as a spur gear, as illustrated in Figure 4. The matrix form of the dynamic equation of the planetary transmission system can be written as 27 :

M_{p} {\ddot{x}}_{p} goodbreak+ C_{p} {\dot{x}}_{p} goodbreak+ K_{p} x_{p} goodbreak= F_{p},

x_{p} goodbreak= {(x_{i}, y_{i}, u_{i})}^{T} ((), i goodbreak= c, r, s, p_{1}, p_{2}, p_{3}),

where M P , C P , K P , F P , and x p represent the planetary stage's mass matrix, damping matrix, stiffness matrix, excitation vector, and displacement column vector, respectively.…”

Section: Methods Of Vbdm‐dtmentioning

confidence: 99%

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Digital twin‐driven online intelligent assessment of wind turbine gearbox

Zhou,

Cui

et al. 2024

Wind Energy

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Remaining useful fatigue life monitoring of wind turbine drivetrains is important. However, the implementation of real‐time monitoring often faces efficiency and accuracy challenges. In order to resolve this, this paper proposes a vibration‐based damage monitoring digital twin (VBDM‐DT) that enables the online intelligent evaluation of wind turbine gearboxes, using gear tooth surface durability as an example fatigue mode. The VBDM‐DT integrates a random wind load model, a high‐fidelity dynamics model, and a fatigue damage model. The random wind load model takes the wind speed from the supervisory control and data acquisition (SCADA) as input to estimate the input torque of the drivetrain in real time. Simultaneously, VBDM‐DT uses the vibration signals from the condition monitoring system (CMS) to intelligently calibrate the dynamics model, allowing it to be continuously adjusted and optimized in response to actual vibrations. The fatigue damage model takes the real‐time dynamic loads estimated by the high‐fidelity dynamic model as input to achieve real‐time fatigue damage monitoring of key components in the wind turbine gearbox. Applying the VBDM‐DT model to a 2 MW wind turbine gearbox, the results indicate that the model provides satisfactory accuracy in estimating input loads and good adaptability in intelligent calibration of the dynamic model. Based on this model, the fatigue life estimation for gears and bearings is more credible and reliable.

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M_{p} {\ddot{x}}_{p} goodbreak+ C_{p} {\dot{x}}_{p} goodbreak+ K_{p} x_{p} goodbreak= F_{p},

x_{p} goodbreak= {(x_{i}, y_{i}, u_{i})}^{T} ((), i goodbreak= c, r, s, p_{1}, p_{2}, p_{3}),

where M P , C P , K P , F P , and x p represent the planetary stage's mass matrix, damping matrix, stiffness matrix, excitation vector, and displacement column vector, respectively.…”

Section: Methods Of Vbdm‐dtmentioning

confidence: 99%

“…25,26 Each gear within the planetary transmission system is characterized as a spur gear, as illustrated in Figure 4. The matrix form of the dynamic equation of the planetary transmission system can be written as 27 :…”

Section: High-fidelity Dynamics Modelmentioning

confidence: 99%

Digital twin‐driven online intelligent assessment of wind turbine gearbox

Zhou,

Cui

et al. 2024

Wind Energy

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“…(5) Gearbox bearings The wind turbine gearbox bearing is a vital transmission structure that connects the generator and the main shaft. Its primary function is to support and rotate the gearbox while transmitting and adjusting force and torque [59]. Additionally, the gearbox bearing absorbs and dampens shock and vibration within the gearbox [60].…”

Section: (4) Generator Bearingsmentioning

confidence: 99%

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Peng,

Zhao,

Shangguan

et al. 2023

Coatings

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With the significant penetration of wind generation, wind turbines require higher and higher lubrication performance for bearings. To improve the lubrication performance of wind power bearings, this study takes wind power bearings as the research object and comprehensively analyzes the wear forms of wind power bearings as well as intelligent lubrication methods. Firstly, the main roles and wear forms of wind turbine bearings are sorted out and analyzed. Secondly, the common lubrication problems of wind power bearings are analyzed from the bearing grease selection, lubrication mode, and lubrication status, highlighting the important influence of lubrication on bearings. Thirdly, the wind turbine bearing wisdom lubrication method research and organization, mainly including the wind power generation bearing lubrication materials, lubrication devices and monitoring methods, and other issues of research and analysis. Finally, current challenges and future development directions are summarized, which are designed to provide theoretical reference and technical support for the related research and engineering practice in the field of wind power engineering.

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“…Wind turbines usually include a speed increaser, whose function is to transmit mechanical energy, as well as to boost the lower speed of wind rotors so that the electric generator's speed requirement be met. Research on speed increasers has covered various topics, such as: the fixed-axis gearbox type [12][13][14], planetary transmissions [5,[15][16][17][18][19] or variable transmissions [20][21][22], analyzed as part of single-rotor wind turbines or counterrotating systems, by e.g., the structure of an improved wind turbine gearbox is presented for meeting the operation of the optimized wind turbine power-wind speed curve [22].…”

Section: Introductionmentioning

confidence: 99%

A Comparative Performance Analysis of Counter-Rotating Dual-Rotor Wind Turbines with Speed-Adding Increasers

et al. 2021

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Increasing the efficiency of wind power conversion into electricity poses major challenges to researchers and developers of wind turbines, who are striving for new solutions that can ensure better use of local wind potential in terms of both feasibility and affordability. The paper proposes a novel concept of wind systems with counter-rotating wind rotors that can integrate either conventional or counter-rotating electric generators, by means of the same differential planetary speed increaser, aiming at providing a comparative analysis of the energy performance of counter-rotating wind turbines with counter-rotating vs. conventional electric generators. To this end, a generalized analytical model for angular speeds and torques has been developed, which can be customized for both system configurations. Three numerical simulation scenarios have been contrasted: (a) a scenario with identical wind rotors in both systems, (b) a scenario with the secondary wind rotors being identical in the two applications, but different from the primary rotors, and (c) a scenario with different secondary rotors in the two wind turbines. The results have shown that the wind systems with counter-rotating generator are more efficient and have a higher amplification ratio, compared to systems with conventional generators. In addition, the analyzed wind system with a counter-rotating generator displays better energy performance with low values for output power and ratio of input speeds, whereas the wind turbine with a conventional generator proves to be more efficient in the high-value range of the above-mentioned parameters.

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The transmission characteristic for the improved wind turbine gearbox

Cited by 6 publications

References 24 publications

Digital twin‐driven online intelligent assessment of wind turbine gearbox

Digital twin‐driven online intelligent assessment of wind turbine gearbox

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

A Comparative Performance Analysis of Counter-Rotating Dual-Rotor Wind Turbines with Speed-Adding Increasers

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