Dynamic characteristics of a wind turbine gearbox with amplitude modulation and gravity effect: Theoretical and experimental investigation. (January 2022)

• Record Type: Journal Article
• Authors: Dewangan, Palash; Parey, Anand; Hammami, Ahmed; Chaari, Fakher; Haddar, Mohamed
• Is Part Of: Mechanism and machine theory. Volume 167(2022)
• Publication Date: 2022-01
• Subjects: Wind turbine gearbox -- Planetary gearset -- Amplitude modulation -- Gravity effect -- Mesh phasing; Machine theory -- Periodicals; Machinery -- Periodicals; Machines -- Périodiques; Génie mécanique -- Périodiques; Machine theory; Machinery; Periodicals; 621.81
• DOI: 10.1016/j.mechmachtheory.2021.104468
• Languages: English
• ISSNs: 0094-114X

Abstract

Highlights: Wind turbine gearbox dynamics under amplitude modulation and gravity excitation. Extensive experimental investigation of modulation sidebands. Analysis of different mesh phase designs reveals distinct sideband behavior. Gravity excitation significantly influences modulation sideband behavior. Abstract: Amplitude modulation (AM) in planetary gears, arising from rotation of carrier, is a predominant phenomenon that yields unique yet complicated dynamic behavior. However, the effect of gravity of planetary gear components contributes additional frequency components in the modulation sidebands. In this paper, an extensive experimental investigation is performed to obtain the frequency components of the test rig having the configuration of a modern wind turbine gearbox. The experimental results present some new insight into the combined effect of AM and gravity. A dynamic model of a wind turbine gearbox (WTG) having a two-stage planetary gear set is developed to predict the dynamic response as observed in the experiment. The AM effect due to carrier rotation and the effect of gravity is implemented in the dynamic model. Frequency response and order analysis are carried out for the simulated and experimental signals. It is observed from the comparison of simulation and experimental results that the developed model is capable of correctly describing the dynamic characteristics of the WTG. These results help to understand the complex vibration response of multi-stage planetary gears in a WTG.