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DINAME2019
DINAME2019
Modeling and Characterization of a Flexible Rotor Supported by Ac- tive Magnetic Bearings Using Model Reduction Techniques
Submission Author:
Felipe Carmo Carvalho , MG
Co-Authors:
Felipe Carmo Carvalho, Marcus Vinicius Fernandes de Oliveira, Bruno Luiz Pereira, Aldemir Ap Cavalini Jr, Valder Steffen Jr
Presenter: Felipe Carmo Carvalho
doi://10.26678/ABCM.DINAME2019.DIN2019-0208
Abstract
Active magnetic bearings (AMBs) have attracted the attention of researchers to find new applications and make them viable for industrial applications. Nowadays, AMBs technology has achieved a considerable level of maturity and is one of the most promising solutions for several applications involving rotating machinery. In such devices, the rotating shaft levitates suspended by magnetic forces, preventing from any wear due to mechanical contact between the bearings and the rotor journals. AMBs are lubricant free, reaching high speeds without any relevant heating. In this context, the present work is devoted to the design of a reduced model of an experimental test rig composed by a flexible shaft supported by two radial AMBs. For this purpose, the present study was divided into two parts. The first part is dedicated to the development of individual numerical models to represent the dynamic behavior of each subsystem that composes the rotor system, as based on the design characteristics of each subsystem. Thereafter, the models of the subsystem are assembled together to obtain a representative model of the entire system. Then, model reduction techniques are applied to make the system simpler and still representative. Next step is the correlation of the numerical models with the experimental results for validation purposes. Based on the data obtained, the stability analysis of the system is performed by considering existing standards for magnetic bearings. The obtained results demonstrate the representativeness of the reduced model.
Keywords
Active Magnetic Bearings, Reduced Model, model validation, control
