Assessment of excitation mechanisms and structural flexibility influence in excitation propagation in multi-megawatt wind turbine gearboxes: Experiments and flexible multibody model optimization

Helsen, Jan; Marrant, Ben; Vanhollebeke, Frederik; Coninck, Filip De; Berckmans, D.; Vandepitte, Dirk; Desmet, Wim

doi:10.1016/j.ymssp.2012.12.001

Cited by 25 publications

(15 citation statements)

References 31 publications

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“…where F rim and F sim correspond to the Fourier complex coefficients of the dynamic meshing forces of planet-ring and planet-sun gear pairs at the position ψ i , respectively. Therefore, the vibration response x i (t) collected by the stationary sensor in Y′ direction is (see (17)) For the reason that the time shift in the time domain only changes the phases of corresponding components, but has little influence on the amplitudes in the frequency domain, the magnitude characteristics of x i (t) are the same as those of x 0 (t), which can be expressed by (10) as well.…”

Section: Mechanism Of Modulation Sideband Of a Single Planet Gear's Vmentioning

confidence: 99%

Frequency response model and mechanism for wind turbine planetary gear train vibration analysis

Ding

et al. 2016

IET Renewable Power Generation

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Frequency components of complicated asymmetric modulation sidebands, existing in the vibration of the healthy planetary gear train, are prone to be erratically diagnosed as fault characteristics, which leads to difficulties in fault diagnosis of wind turbine planetary gearbox. The factors affecting the modulation sideband, i.e. the periodical time-varying transmission path and meshing force direction, are analysed. Considering both the meshing vibrations of the planet-ring and planet-sun gear pairs, a mathematical model was developed to analyse the planetary gear train's vibration response. Simulation and experiments were conducted, and the mechanism of vibration modulation sidebands was revealed. The modulation sideband is not caused by the meshing vibration itself, but by the testing method that sensors are fixed on the ring gear or gearbox casing. The frequency components and amplitudes of the sidebands are determined by the tooth number of the ring gear and sun gear, the number of planet gears and their initial assembling phases. The asymmetric modulation sideband is mainly caused by the phase difference of the initial planets' assembling phase.

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Section: Mechanism Of Modulation Sideband Of a Single Planet Gear's Vmentioning

confidence: 99%

Frequency response model and mechanism for wind turbine planetary gear train vibration analysis

Ding

et al. 2016

IET Renewable Power Generation

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“…Xing and Moan 20 presented a MBD simulation method that combined the FE and MBD models to predict the vibrations of a planetary gearbox used in a wind turbine. Helsen et al 21 developed a flexible MBD model of a planetary gearbox in a wind turbine to analyze the mode shapes of the system. Jin et al 22 established a flexible MBD model for a planetary transmission system in a wind turbine to predict the vibrations of the system.…”

Section: Established a Fe Model For A Clutch Discmentioning

confidence: 99%

A Dynamic Investigation of the Impact Failure Analysis of the Friction Plate in a Planetary Transmission System

Li¹,

Zhou²

2020

The International Journal of Acoustics and Vibration

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A clear understanding of both vibrations and the impact forces of planetary transmission systems is very helpful for decreasing impact failures of their friction discs and preventing serious accidents of the system. This study presents a multibody dynamic (MBD) investigation based on a commercial MBD software to predict the vibrations and impact forces of the friction disc in a planetary transmission system. In the MBD model, the radial clearance of the planet bearing is formulated, as well as the backlash between the outer gear teeth of the ring and friction disc teeth. However, the previous works in the literature only considered single radial clearance or backlash. The influences of the radial clearance of the planet bearing and backlash between the outer gear teeth of the ring and friction disc teeth on the vibrations and impact forces of the friction disc in the planetary transmission system are studied. The results give that a smaller radial clearance and backlash can be useful for decreasing both the vibrations and impact forces of the friction disc in the planetary transmission system. The MBD method can be applied to predict the vibrations and impact forces in the planetary transmission system as well.

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“…Shi et al [4] studied the vibration and dynamic load responses of a wind turbine drivetrain. Helsen et al [5] investigated the interaction effect between gearbox modal behavior and different dynamic excitations. However, the abovementioned researches concentrated on steady conditions where loads and speeds were constant.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Interaction Behavior of an Electric Motor Drive Multistage Gear Set

Tan

Xuan

et al. 2020

IEEE Access

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For the better design and monitoring of gearboxes operating under nonstationary conditions, the dynamic interaction behavior of an electric motor drive multistage gear set is investigated in this study. Initially, dynamic mathematical models of an asynchronous motor and a multistage gear set are established by using the equivalent circuit method and the lumped parameter method, respectively. An electromechanical model coupling the asynchronous motor and the gearbox is subsequently developed, which is suitable for nonstationary conditions. The system transient responses under an impact external load are analyzed, and the mechanical torsional-vibration and electric current response are compared. Finally, the dynamic load propagation mechanism and the interaction effect on different gears are examined. The results demonstrate that the vibration frequencies of the multistage gearbox in steady and transient states both can be captured in the current. Electric current can be applied to reflect the external load variation and the internal vibration status of the driven gearbox under stationary or nonstationary conditions. The mutual excitation effects between adjacent gear pairs change the respective dynamic characteristics of the gears, and gears with small nominal loads are susceptible. INDEX TERMS Multistage gears, nonstationary operating conditions, motor current signature, electromechanical interaction, dynamic load propagation.

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Assessment of excitation mechanisms and structural flexibility influence in excitation propagation in multi-megawatt wind turbine gearboxes: Experiments and flexible multibody model optimization

Cited by 25 publications

References 31 publications

Frequency response model and mechanism for wind turbine planetary gear train vibration analysis

Frequency response model and mechanism for wind turbine planetary gear train vibration analysis

A Dynamic Investigation of the Impact Failure Analysis of the Friction Plate in a Planetary Transmission System

Dynamic Interaction Behavior of an Electric Motor Drive Multistage Gear Set

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