Dynamics And Vibration Analyses Of Gearbox In Wind Turbine
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Dynamics And Vibration Analyses Of Gearbox In Wind Turbine
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Author : Qingkai Han
language : en
Publisher: Springer
Release Date : 2016-09-27
Dynamics And Vibration Analyses Of Gearbox In Wind Turbine written by Qingkai Han and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-09-27 with Technology & Engineering categories.
This book explores the dynamics and vibration properties of gearboxes, with a focus on geared rotor systems. It discusses mechanical theories, finite-element based simulations, experimental measurements and vibration signal processing techniques. It introduces the vibration-resonance calculation method for the geared rotor system in wind turbines and load sharing of the planetary gear train, and offers a method for calculating the vibrations of geared rotor systems under either internal excitations from gear sets or external loads transferred from wind loads. It also defines and elaborates on parameter optimization for planetary gear systems based on the torsional dynamics of wind-turbine geared rotor systems. Moreover, it describes experimental measurements of vibrations on the wind-turbine gearbox performed on the test rig and on site, and analyzes the vibration signals of different testing points, showing them in both time and frequency domains. Lastly, it lists the gear coupling frequencies and fault characteristic frequencies from the vibrations of the gearbox housing. The technologies and results presented are valuable resources for use in dynamic design, vibration prediction and analysis of gearboxes and geared rotor systems in wind turbines as well as many other machines.
Vibration Based Condition Monitoring Of Wind Turbines
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Author : Tomasz Barszcz
language : en
Publisher: Springer
Release Date : 2018-12-04
Vibration Based Condition Monitoring Of Wind Turbines written by Tomasz Barszcz and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-04 with Technology & Engineering categories.
This book describes in detail different types of vibration signals and the signal processing methods, including signal resampling and signal envelope, used for condition monitoring of drivetrains. A special emphasis is placed on wind turbines and on the fact that they work in highly varying operational conditions. The core of the book is devoted to cutting-edge methods used to validate and process vibration data in these conditions. Key case studies, where advanced signal processing methods are used to detect failures of gearboxes and bearings of wind turbines, are described and discussed in detail. Vibration sensors, SCADA (Supervisory Control and Data Acquisition), portable data analyzers and online condition monitoring systems, are also covered. This book offers a timely guide to both researchers and professionals working with wind turbines (but also other machines), and to graduate students willing to extend their knowledge in the field of vibration analysis.
Wind Turbine Gearbox Condition Monitoring Round Robin Study
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Author :
language : en
Publisher:
Release Date : 2012
Wind Turbine Gearbox Condition Monitoring Round Robin Study written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Wind turbines categories.
Dynamic Analysis Of Wind Turbine Planetary Gears Using An Extended Harmonic Balance Approach
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Author : Yi Guo
language : en
Publisher:
Release Date : 2012
Dynamic Analysis Of Wind Turbine Planetary Gears Using An Extended Harmonic Balance Approach written by Yi Guo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Floquet theory categories.
The dynamics of wind turbine planetary gears with gravity effects are investigated using an extended harmonic balance method that extends established harmonic balance formulations to include simultaneous internal and external excitations. The extended harmonic balance method with arc-length continuation and Floquet theory is applied to a lumped-parameter planetary gear model including gravity, fluctuating mesh stiffness, bearing clearance, and nonlinear tooth contact to obtain the planetary gear dynamic response. The calculated responses compare well with time domain integrated mathematical models and experimental results. Gravity is a fundamental vibration source in wind turbine planetary gears and plays an important role in system dynamics, causing hardening effects induced by tooth wedging and bearing-raceway contacts. Bearing clearance significantly reduces the lowest resonant frequencies of translational modes. Gravity and bearing clearance together lowers the speed at which tooth wedging occurs lower than the resonant frequency.
Wind Turbine Gearbox Condition Monitoring Vibration Analysis Benchmarking Datasets Data
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Author :
language : en
Publisher:
Release Date : 2014
Wind Turbine Gearbox Condition Monitoring Vibration Analysis Benchmarking Datasets Data written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Wind Turbine Gearbox Condition Monitoring Round Robin Study
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Author :
language : en
Publisher:
Release Date : 2012
Wind Turbine Gearbox Condition Monitoring Round Robin Study written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with categories.
Proceedings Of The 10th International Conference On Rotor Dynamics Iftomm
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Author : Katia Lucchesi Cavalca
language : en
Publisher: Springer
Release Date : 2018-08-18
Proceedings Of The 10th International Conference On Rotor Dynamics Iftomm written by Katia Lucchesi Cavalca and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-08-18 with Technology & Engineering categories.
IFToMM conferences have a history of success due to the various advances achieved in the field of rotor dynamics over the past three decades. These meetings have since become a leading global event, bringing together specialists from industry and academia to promote the exchange of knowledge, ideas, and information on the latest developments in the dynamics of rotating machinery. The scope of the conference is broad, including e.g. active components and vibration control, balancing, bearings, condition monitoring, dynamic analysis and stability, wind turbines and generators, electromechanical interactions in rotor dynamics and turbochargers. The proceedings are divided into four volumes. This second volume covers the following main topics: condition monitoring, fault diagnostics and prognostics; modal testing and identification; parametric and self-excitation in rotor dynamics; uncertainties, reliability and life predictions of rotating machinery; and torsional vibrations and geared systems dynamics.
Vibration Analysis And Control In Mechanical Structures And Wind Energy Conversion Systems
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Author : Francisco Beltran-Carbajal
language : en
Publisher: BoD – Books on Demand
Release Date : 2018-04-18
Vibration Analysis And Control In Mechanical Structures And Wind Energy Conversion Systems written by Francisco Beltran-Carbajal and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-04-18 with Technology & Engineering categories.
This book focuses on recent and innovative methods on vibration analysis, system identification, and diverse control design methods for both wind energy conversion systems and vibrating systems. Advances on both theoretical and experimental studies about analysis and control of oscillating systems in several engineering disciplines are discussed. Various control devices are synthesized and implemented for vibration attenuation tasks. The book is addressed to researchers and practitioners on the subject, as well as undergraduate and postgraduate students and other experts and newcomers seeking more information about the state of the art, new challenges, innovative solutions, and new trends and developments in these areas. The six chapters of the book cover a wide range of interesting issues related to modeling, vibration control, parameter identification, active vehicle suspensions, tuned vibration absorbers, electronically controlled wind energy conversion systems, and other relevant case studies.
Multibody Dynamic Model And Algorithm For Vibration Analysis Of Wind Turbines
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Author : Yuho Kim
language : en
Publisher:
Release Date : 2012
Multibody Dynamic Model And Algorithm For Vibration Analysis Of Wind Turbines written by Yuho Kim and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Wind turbines categories.
Dynamics Guided Vibration Signal Analysis For Fixed Axis Gearbox Fault Diagnosis
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Author : Xingkai Yang
language : en
Publisher:
Release Date : 2022
Dynamics Guided Vibration Signal Analysis For Fixed Axis Gearbox Fault Diagnosis written by Xingkai Yang and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Fault location (Engineering) categories.
Gearboxes are key components commonly employed to transfer torque and power and adjust speed in mechatronic systems, such as wind turbines, automobiles, and mining machines. Due to the harsh working environment, various faults may occur in gearboxes. Tooth cracks account for a large proportion of gearbox faults. Detection and severity assessment of early tooth cracks is of vital significance to prevent gearbox failures since it enables efficient condition-based maintenance activities, which not only improves system reliability but also reduces operation and maintenance costs. Vibration analysis has been widely utilized for gear tooth crack detection and severity assessment. In industrial applications, gearboxes may work under either constant or time-varying operating conditions. Besides, gearboxes may suffer from either one single tooth crack or multiple tooth cracks depending on their working environment. All these factors render it challenging to get a good understanding of vibration characteristics of gearboxes with tooth cracks owing to their complexity, which undermines the effectiveness of vibration analysis for tooth crack detection and severity assessment. This thesis aims to procure some insights into vibration characteristics of fixed-axis spur gearboxes with tooth cracks through dynamic simulation, and the obtained insights are further adopted to guide the development of effective vibration signal analysis methods for tooth crack detection and severity assessment. To this end, the overarching objective of this thesis consists of four sub-objectives, which aim to address four issues related to tooth crack detection and severity assessment for fixed-axis spur gearboxes. Firstly, inspired by the observation that the Crack Induced Impulses (CII) contain more information on tooth crack growth, two novel condition indicators are developed by a proposed method which conducts a thorough analysis on the CII and are adopted for early tooth crack severity assessment. Secondly, to effectively track tooth crack severity progression under time-varying operating conditions, a comprehensive study on how time-varying operating conditions affect vibration signals of a fixed-axis spur gearbox with a tooth crack is conducted. A linear dependence of the Amplitude Modulation (AM) of the CII on the time-varying operating conditions is identified, through which a new condition indicator is proposed to track tooth crack severity progression under time-varying operating conditions. In addition, inspired by the finding that the AM of the CII is resulted from operating condition variations, a normalization method is proposed to remove the speed variation-induced AM of the CII and a normalized CII is obtained. The normalized CII preserve information on tooth crack growth and are free from gearbox speed fluctuations, which are used to track tooth crack severity progression under variable speed conditions. Lastly, insights into vibration characteristics of a fixed-axis spur gearbox with multiple tooth cracks are obtained using dynamic simulation and are further experimentally validated. Besides, inspired by the observation that the CII can well reflect tooth cracks, a method focusing on the CII is proposed to detect the number and locations of multiple tooth cracks in fixed-axis spur gearboxes. The research work conducted in this thesis enables us to procure a good understanding of vibration characteristics of fixed-axis spur gearboxes with tooth cracks working under both constant and time-varying operating conditions and provides effective vibration signal analysis methods for tooth crack detection and severity assessment of fixed-axis spur gearboxes. Future work will explore the effects of tooth lubrication and bearing faults on gearbox vibration characteristics.