TL08 - Addressing High-Subsynchronous Vibrations in a Turboexpander Equipped with Active Magnetic Bearings
Abstract
This paper presents the experience of the authors with a turboexpander (TEX) equipped with active magnetic bearings (AMBs) in a natural gas processing facility. The TEX was unable to achieve design performance due to high sub-synchronous vibration since its commissioning. Rotordynamic simulations revealed that the most likely root-cause of the high vibration was the excitation of an unstable rigid body mode of the rotor-bearing system due to high cross-coupled stiffness effects. This paper also contains a summary of the redesign features incorporated in the TEX that resolved the sub-synchronous vibration.
Description
LectureCollections
Citation
Avetian, Tadeh; Park, Junyoung; Rodríguez, Luis E. ([201). TL08 - Addressing High-Subsynchronous Vibrations in a Turboexpander Equipped with Active Magnetic Bearings. Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries. Available electronically from https : / /hdl .handle .net /1969 .1 /188643.