Development of components for increased damping in hydropower units

This project is a continuation of a previous SVC project with the same title. In this continuation the developed bearing will be further optimized and validate their effectiveness.

Damping in hydropower units is normally too low which leads vibrations and in some cases breakdowns. Optimized bearing and external components can increase the stability of the rotor system. The project aims to develop a simpler measuring technique to evaluate dynamic properties along with testing of the previously developed squeeze film bearing. Finally the project aim to analyze a technique used by Vattenfall to increase damping by staggered bearing halves.

See more projects within Rotor Dynamics

Contact

Jan-Olov Aidanpää

Research Area Responsible

Luleå University of Technology

Contact

Gudeta Benti

Post doc

Kungliga Tekniska Högskolan

Publications

Simplified transformation matrices of journal bearings in vertical application, Benti G., Aidanpää J.O. and Gustavsson R., August 28, 2023, Applications in Engineering Science, Volume 15

Cost-Effective Design Modification of a Sleeve Bearing with Large Bearing Clearance, Benti G., Aidanpää J.O. and Gustavsson R., April 8, 2024, Applied Sciences, E-ISSN 2076-3417, Vol. 14,

Rotor-stator contact in a hydropower machine with squeeze-film damper, Benti G., Aidanpää J.O. and Gustavsson R., April 9, 2024, CHAOS 2023 International Conference 13-16 June 2023, Heraklion, Crete, Greece

Project brief: Development of components for increased damping in hydropower units

Publications in an earlier project

Numerical and experimental study on the dynamic bearing properties of a four-pad and eight-pad tilting pad journal bearings in a vertical rotor. Gudeta Berhanu Benti, David Rondon, Rolf Gustavsson, Jan-Olov Aidanpää: Journal of Energy Resource Technology (2022)

A Rotordynamic Characterization of Tilting-Pad Bearings With Eight Pads in Vertical Rotors. Authors: David Rondon, Gudeta Berhanu Benti, Jan-Olov Aidanpää and Rolf Gustavsson. Journal of Energy Resource Technology (2022)

Speed Dependent Bearing Models for Dynamic Simulations of Vertical Rotors. Gudeta Berhanu Benti, Jan-Olov Aidanpää, Rolf Gustavsson: published in Machines (2022)